State of Arizona Bureau of Geology and Mineral Technology

Home , Aquarius Mountains, Cerbat Mountains, Hualapai Mountains, Hualapai Peak, Hualapai Valley, Peacock Mountains

STATE OF ARIZONA BUREAU OF GEOLOGY AND MINERAL TECHNOLOGY

GEOLOGIC EVALUATION OF URANIUM

IN PLUTONIC ROCKS

NORTHWESTERN ARIZONA

Geological Survey Branch Geothermal Group

Earth Science and Mineral Resources in Arizona

845 N. PARK AVENUE TUCSON, ARIZONA netadc784601 85719 .ll

National Uranium Resource Evaluation

GEOLOGIC EVALUATION OF URANIUM

IN PLUTONIC ROCKS

NORTHWESTERN ARIZONA

GEOLOGY BUR1AUBUWpUrIOF 1 T-CHNOLOGY

Status Report

By: James D. Loghry & Walter E. Heinrichs, Jr.

Loghry/Heinrichs Joint Venture P. 0. Box 5964 Tucson, Arizona 85703 (602) 623-0578

July 1980

GJBX-213 (80) Microfiche Open File

PREPARED FOR U.S. DEPARTMENT OF ENERGY Assistant Secretary for Resource Applications Grand Junction Office, Colorado

Contract No. 79-348-S and Bendix Field Engineering Corporation Project No. 30-79-3307 This report is a result of work performed by Science Applications, Inc., through a Bendix Field Engineering Corporation Subcontract, as part of the National Uranium Resource Evaluation. NURE is a program of the U. S. Depart- ment of Energy's Grand Junction, Colorado, Office to acquire and compile geologic and other information with which to assess the magnitude and distribution of uranium resources and to determine areas favorable for the occurrence of uranium in the United States.

This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favor- ing by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States. Govern- ment or any agency thereof.

N.W. Arizona Plutonics Project No. 30-79-3307 Subcontract No. 79-348-S Loghry/Heinrichs Joint Venture CONTENTS

Page Nos.

Introduction------1-2

Project Summary and Conclusions------2-3

Histogram------4

Table of Surface Geologic Unit Codes, units, number of sites anomalous or weakly anomalous and index map location code number------5-10

Recommendations for work needed to complete Final Report------11

Index Maps of Area U.S.G.S. Top. Quad.Index------12 N.W.A. Plutons, Dikes & Veins------13 General Location and Geology------14

Hualapai Mountains------15

Hualapai Valley Pluton------15

Peacock Mountains------15-16

Cerbat Mountains------16

Cerbat Mountains Veins------16-17

Aquarius Mountains------17-18

Water Samples & Table of Anomalous Water Samples------19-20

Master Sample Lists: 70 pages of 426 rocks, 2 rock-soils = 428 samples 9 pages of 90 water samples

Project Follow Up Recommendations (Beyond Completion of Final Report) ------21

References------22-27

Signature page and/or letter of transmittal------28

Appendix:

BFEC-GJO Certificates of Assay------3 pages

Petrography: Letter dated July 19, 1980 from S.A.Williams-- 2 " Letter dated July 3, 1980 from J.D. Loghry---- 2 " Letter dated March 10, 1980 from S.A.Williams- 2 " CONTENTS (Cont'd)

Petrography (continued) Data (Rock Analyses)------39 pages Samples to S.A.Williams, Jan.29, 1980------10 " Letter Jan. 29, 1980 from J. D. Loghry------2

Geologic Unit Code Changes June 26, 1980 & July 7, 1980---10

Rock Chip Samples submitted to ORGDP------1

Water Samples submitted to ORGDP------1

Rock & Water Samples submitted to ORGDP lacking data received------1

ORGDP Analytical Data Critique------3 "

BFEC-GJO Analytical data received------1

Six digit master sample numbers assigned to replace numbers 154013 through 154133 originally used in the field------2

ORGDP Computer Analysis printouts (Water)------3 ORGDP Computer Analysis printouts (Rocks)------18

Sample Site Location Maps at 1:125,000 scale; Rocks, Waters, & Base Topography------(In Pocket)

N.W.Arizona Plutonics Project No. 30-79-3307 Subcontract No. 79-348-S Loghry-Heinrichs Joint Venture INTRODUCTION

This report is a status report to complete present contract obligations and is submitted in lieu of a Final Report. A Final Report is not feasible especially until complete analyses and statistical treatment of all of the 436 rock chip, 2 soil-rock and 90 water samples, a total of 528 samples submitted by the partners to Union Carbide, Oak Ridge, Tennessee, plus remaining analyses to be run by BFEC's Grand Junction Laboratory become available and other recommendations and necessities are done. See subsequent section of this report titled: "Recommend- ations For Work Needed to Complete Final Report". A Final Report may be prepared by the partners if supplemental funds for such work and for completion of the analyses and their statistical treatment ever become available.

On June 21, 1980, an ORGDP printout with letter of May 16, 1980, was received with more or less complete data for 304 samples within the series 153603 and 153916 A copy and critique of the ORGDP report of May 16, 1980, is included in the Appen- dix of this report. Seven samples in the series are absent and about 240 of the 304 samples present are missing various data. The original BFEC proposal envision- ed 1000-1500 professional hours, 300-400 samples and a 'total expenditure of $60,000.00 was contracted for on a firm fixed price basis. As of July 26, 1980, the partners and their associates, Phillip Anderson and Mark Anders have spent 1571 hours in the field and 1109 office hours, a total of 2680 professional hours and a total cost of $69,330.65 to the partners.

Total area actually mapped and sampled by the partners touches all or parts of the equivalent of 41 - 7 1/2 minute U.S.G.S. quadrangles or, roughly 2500 square miles. Of the quads, 17 contain extensive mapping, an equivalent of 20 contain minor mapping and 4 contain no mapping.

The core of this report consists of master lists of rock chip (and two soil) samples (70 pages) and water samples (9 pages) with sample locations and field descriptions. Where available, petrologic descriptions and Mt. Sopris total cps readings are provided for the rock chip sample sites. Petrologic reports for 117 specimens and letter reports by Dr. S. A. Williams (through 19 July 1980) and J. D. Loghry are appended to this report. The rock chip (soil) sample locations and the water sample locations are computer plotted on 1:125,000 scale maps. In most cases. geologic mapping in pencil on non-reproducible 7 1/2' quadrangle field maps was far enough advanced to tentatively transfer the contacts of the sampled plutons and a few other geologic features to a rough preliminary base rock chip sample map. Due to scale limitations and limited detailed mapping the geology is partly diagram- atical. Ideally, this aspect would be somewhat further resolved if as and when it is decided to complete a Final Report. In keying these master sample lists to the Oak Ridge and BFEC analysis results. the six digit master sample number must be used. In turn, these sample numbers are keyed to each sample site number as indicated on the master list. Rock sample site numbers and lists are arranged in order from No. 1 through No. 497. Water sample numbers and lists follow the rock lists and are arranged in order from Water Sample No. 1 through No. 90 with each corresponding N.W.A. project site number and master project six digit sample number. Oak Ridge Geochemical Sampling Forms and KUT Supplemental Forms are keyed by project 6 digit sample numbers and site numbers. Computer plotted maps show rock sample locations by site numbers, 1 through 497, and water sample locations by water numbers 1 through 90. Corresponding water site numbers range from 44 through 528.

-1 - INTRODUCTION (Continued)

Following the section on "Recommendations For Work Needed To Complete Final Report" in this report are three index maps of the project area. First, at a scale of 1:1,000,000 are shown all of the U.S.G.S. Quadrangle Maps used as field base sheets and the extent of geologic mapping done on each sheet. Next is a sheet at a scale of 1:500,000 showing approximate relative location on a preliminary basis, of the various occurrences sampled. These are keyed by number and Surface Unit Geologic Code Symbol to a Surface Unit Geologic Code table, which also shows sampled occurrence name, the number of sample sites per occurrence and whether strongly or weakly radioactively anomalous. Following at the same scale (1:500,000) is a print of a portion of a map of the geology of Arizona for general location purposes.

Project Summary and Conclusions

Following this summary is a histogram which illustrates the total count response distribution (plotted semi-logarithmically) of 396 sample sites as indicated on a Mt. Sopris Model SC-132 Scintillometer. The area under the curve is bell-shaped, suggesting a log-normal distribution but, there is also a slight skew toward the higher readings.

Immediately following the histogram is a listing of Surface Unit Geologic Code abbreviations used during the project, together with their associated geologic terminology and/or designated name, basic structural characteristic of the unit, i.e.: pluton, dike, vein etc., number of sites of unit sampled and whether generally radioactively anomalous or weakly anomalous, and an index map code number which shows the general location of the designated occurrence.

During the project, 67 plutons were identified and 64 were sampled. The 3 not sampled are large, complex Precambrian batholiths not designated for sampling in the contract and their examination would be far beyond the scope of this project. We feel that the Music Mountain - Garnet Mountain and the Cottonwood Cliffs plutons are more likely to contain uranium anomalies than the Cerbat granite. This is based on the known air radiation anomalies and our limited examination of the Cerbat granite.

Four plutons known to be Laramide, ranging in age from about 65 through 72 m.y. were sampled: Ithaca Peak, Diamond Joe, Wheeler Wash and Devils Canyon. The McConnico diorite (Site 108) could be Laramide. None of the Laramide plutons are radiometrically anomalous. However, Site No. 43, a small quartz-pyrite- chalcopyrite-molbdenite pod in a vein wholly within the Laramide Diamond Joe stock is anomalous, with 159.4 ppm U-NT, indicating that Laramide stocks can gen- erate their own uranium. At the Wheeler Wash copper-molybdenum and uranium prospect, uranium seems to occur in the vein-fault contacts of the otherwise "dead" pluton (Site No. 489) and Laramide limonite-sulfide veinlets in the Democrat granite near the Wheeler Wash pluton were anomalous (Site No. 443).

-2- Project Summary and Conclusions (Continued)

Counted among the plutons are two large pegmatite bodies sampled at Sites Nos. 67 and 428. These bodies were not anomalously radioactive. Of the other 62 Precambrian plutons sampled, 14 were found to be strongly anomalous in that their total count at most or all sample sites exceeded 400 cps (Mount Sopris SC-132 Scintillometer) or 100 cps (Geometrics GR310 Differential Spectral Scint- illometer). Fourteen other plutons were weakly anomalous with more than 300 cps (SC-132) or more than 10 ppm eU (GR-310) for most of their sample sites. Oak Ridge uranium analyses received so far mostly support the conclusion that these plutons are anomalous.

Thin sections analyzed by petrographer S. A. Williams suggest that the anomalous plutons contain fluorite and allanite, usually a partly or mostly metamict mineral inflicting radiation damage on adjacent minerals, believed to contain anomalous uranium and thorium. Other accessory minerals, say zircon and monazite, likely to contain uranium and thorium show no evidence of radioactivity. Williams correlates radioactivity with fluorite and allanite and sees a clear negative correlation between hornblende and radioactivity.

A total of 31 dikes were sampled: 20 Precambrian and 11 Laramide. Only two Laramide dikes were radioactively anomalous. Site No. 227 is a dacite dike whose anomaly is related to black, radioactive Laramide veinlets. Site No. 485 is a poorly exposed dike of uncertain composition and age which intrudes Pre- cambrian metasediments. It's quite likely that actually no Laramide dikes are. anomalous. Of 20 Precambrian dikes sampled, 8 are strongly anomalous and 2 are weakly anomalous. Counted among these dikes are five pegmatites of which 4 are strongly anomalous and one is weakly anomalous.

The strongly anomalous non-pegmatite Precambrian plutons and dikes are biotite quartz monzonites about 1400 m.y. in age containing accessory fluorite and metamict allanite. Some of the weakly anomalous plutons are intruded by the strongly anomalous ones.

Recapping the non-pluton occurrences sampled during the project there were: 4 Laramide or Tertiary porphyry dikes, 6 Laramide or Tertiary dacite dikes, 6 pegmatite dikes, 1 diabase dike, 2 metavolcanic occurrences, 1 breccia dike, 22 Laramide (?) veins in Cerbat Mountains (LVN), 15 Laramide (?) veins other than those in Cerbat Mountains (LQVN), and 8 miscellaneous types of occurrences including two breccia zones, three shear zones, two massive sulfide veins and the Emerald Isle Tertiary conglomerate. Four of these miscellaneous types of occurrences are radioactively anomalous -the three shear zones, (UBBX, PCMV, PCGN) and the Big Ledge breccia (BXVN).

Ten sample sites, Nos.209 through 218 (LIP, LIPT, LIBD), all concern the Ithaca Peak - Mineral Park open pit copper-molybdenum mine of the Duval Corporation (Pennzoil) in the Cerbat Mountains. All of these samples are altered or mineralized to some extent but none were radioactively anomalous or uraniferous.

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TABLE OF SURFACE UNIT GEOLOGIC CODES, UNIT NAMES, RADIOACTIVITY AND INDEX MAP NUMBERS

(Precambrian Rocks) Strongly Index Number Anom. SA Map Abbrev- of Sample Weakly Code iation Unit Designation Sites Anom. WA Number

PCAB vAquarius batholith 3 27

PCD Democrat granite gneiss pluton 10 SA 32

PHGD iHualapai granodiorite gneiss pluton 6 36,12

PCBT Blue Tank pluton 11 WA 9,37

PCOA Odle Ranch alaskite pluton 2 33

PCWP Cavalliere - Wabayuma Peak pluton 12 11 SA PCCC ICopper Creek pluton 12 38

PRGR Bar IL Canyon, Pink medium-grained, 1 SA 13,34 quartz monzonite gneiss pluton WA PCBP Burch Peak batholith 15 35

PCDB Diabase dike 2 SA PGGN /Granite gneiss of Neal Hill pluton 5 14

PCDF vDutch Flat pluton 13 SA 15 WA PCSG ISignal granite pluton 2 58 SA BFSC Biotite feldspar-schist pluton 2 59

PPQM Quartz monzonite gneiss plutdn 1

PQMG Biotite granodiorite gneiss pluton 2 WA PCHP /Hualapai Peak pluton 17 5 SA PCHV Hualapai Valley pluton 12 20 WA PCAN vAntares I pluton 5 21

BTGG Butte Tank biotite granite gneiss pluton 1 43

PVQM Valentine pluton 12 29

-5- TABLE OF SURFACE UNIT GEOLOGIC CODES, UNIT NAMES, RADIOACTIVITY AND INDEX MAP NUMBERS

(Precambrian Rocks) Strongly Index Number Anom. SA Map Abbrev- of Sample Weakly Code iation Unit Designation Sites Anom. WA Number

PGRP Granite pegmatite 1 WA 52

PANT Antares II pluton 5 WA 21

PCAP Artillery Peak pluton Q1t_- ,, 3 WA 18

PCGP LGreenwood Peak pluton 8 SA 19

GRGN Granite dike 1 WA

PCGS 'Groom Springs pluton 2 WA 16,17

PCGR Granite dike 2

PCBS Blazing Star granite pluton 28 SA 22,23,28

PBGD Biotite granodiorite pluton 1 WA 67

PPQM Gneissic porphyry pluton 2

UBBX Granite pegmatite 1 SA 60

BXVN Big Ledge fault-vein 2 SA 61

PCHM 'Holy Moses pluton 39 SA 4

PCPG Pegmatite, (3 dikes, 2 plutons) 5 SA & WA 62

QMGN Shingle Canyon quartz monzonite gneiss 4 31 (3 plutons, 1 dike)

PCGN Quartz monzonite pluton 16 49

PGPG Granite pegmatite dike 1 SA 63 Antler Mine, East Peacock Mts., and PCSC Holy Moses mine schist 5 4,30 PCRH Rattlesnake Hill granite gneiss pluton 9 WA 25

PFGG 'Faculty Springs quartz monzonite 1 SA 42 gneiss pluton

PSPG South Peacock Peak pluton 6 WA 22

PCFG Fine-grained biotite quartz monzonite 1 SA 22 gneiss dike TABLE OF SURFACE UNIT GEOLOGIC CODES, UNIT NAMES, RADIOACTIVITY AND INDEX MAP NUMBERS

(Precambrian Rocks) Strongly Index Number Anom. SA Map Abbrev- of Sample Weakly Code iation Unit Designation Sites Anom. WA Number

PGN Quartz monzonite gneiss pluton 2 30

GDGN Valentine granodiorite gneiss pluton 5 29

PMGM ,jPeacock Mountain biotite quartz 1 30 monzonite gneiss pluton

PCMV Meta-volcanic 1 SA 64

PGNA Quartz-feldspar gneiss pluton 10

PCMD Metadiorite pluton 1

PCDG Diana granite pluton 3 40

PCDP Diorite porphyry dike 1

PCCG Chloride granite pluton 3 39

PLSW 'Stouts Well granite pluton 1 WA 65

PCLG Leucogranite pluton 1

PCWB Whiskey Basin pluton 4 7

PCWC Willow Creek pluton 6 SA 10

WBQM Whiskey Basin north pluton 1 8

PCQM Quartz monzonite or granite dike 4

WGD Granodiorite gneiss pluton (Wikieup) 1 50

PCCL County Line batholith 1 SA 55

PCSM /Sawmill Canyon pyroxine meta-volcanic 1 46

PCYF Yellow Flower pluton 3

PCGK Gold King gneiss pluton 7

(Laramide, Tertiary & Misc. Precambrian Rocks)

LAP Laramide andesite porphyry dike 1 -

LQVN Laramide quartz vein 19 SA 66,12 22,30

~ 7 ~ TABLE OF SURFACE UNIT GEOLOGIC CODES, UNIT NAMES, RADIOACTIVITY AND INDEX MAP NUMBERS

(Laramide, Tertiary & Misc. Precambrian Rocks)

Strongly Index Number Anom. SA Map Abbrev- of Sample Weakly Code iation Unit Designation Sites Anom. WA Number

LDJ 'Laramide Diamond Joe pluton 3 26

LWW Laramide Wheeler Wash pluton 12 24

LBX Bi Metal tailings and dump 2 47

LHDI McConnico hornblende diorite pluton 1 48

LGDP Granodiorite porphyry dike 1

LVN Cerbat Mountains veins 29 SA 57

LDD Dacite dike (Bronco) 6 2

LIPT Ithaca Peak tailings 1 1

LIP /Ithaca Peak quartz monzonite pluton 5 1

LIBD Ithaca Peak breccia dike 1

LVNM Banner Mine mill heads 3 SA 57

LVNT Banner Mine tailings 3 SA 57

LDCP Devils Canyon porphyryy 1 51

LGD Laramide biotite granodiorite or quartz 2 monzonite porphyry dike TEIC ' Tertiary Emerald Isle conglomerate 2 56

PCMS Massive sulfide vein (Antler) 2

PBMT Boriana Mine tailings 1 - ppb (Water Samples) U

PCCC Copper Creek pluton 4 38

PCDF Dutch Flat pluton 2 79.00 15

PCHP Hualapai Peak granite pluton 11 + 1(?) 60.71 5,36

- 8- TABLE OF SURFACE UNIT GEOLOGIC CODES, UNIT NAMES, RADIOACTIVITY AND INDEX MAP NUMBE'

(Water Samples) Index Number Map Abbrev- of Sample ppb Code iation Unit Designation Sites U Numbe-

PCD Democrat pluton 1 78.00 32

PCSW Stouts Well pluton 1 61 .98 65

PCGP Greenwood Peak pluton 1 66.70 19 214.00 PCGN Quartz monzonite pluton 9 13 .40 49,5

.8 - PCGR Granite dike 2

PCHM Holy Moses pluton 1 4

PCPG Pegmatite 2 62

QTS Quaternary-Tertiary sediments 2 East Peacock Mts., Antler, PCSC Holy Moses Mine schist pluton 3 99.28 30,

PCBP Burch Peak batholith 6 35

LIP Ithaca Peak quartz monzonite pluton 1 63.41 1

GDGN Valentine granodiorite gneiss pluton 1 29

LVN Cerbat Mountains veins 6 69.27 57

TEIC Tertiary conglomerate 1 56 71.00 PVQM Valentine pluton 4 65.16 29

QAL Quaternary-Tertiary gravels 2

TV Tertiary volcanics 4

PCWP Cavalliere-Wabayuma Peak pluton 2 11

PCWC Willow Creek pluton 1 1C

PCWB Whiskey Basin pluton 1 7

PCBT Blue Tank pluton 4

PCQM Quartz monzonite dike 1

PCGS Groom Springs pluton 1 16,1

LDCP Devils Canyon porphyry pluton 1 51

-9- TABLE OF SURFACE UNIT GEOLOGIC CODES, UNIT NAMES, RADIOACTIVITY AND INDEX MAP NUMBERS

(Water Samples) Index Number Map Abbrev- of Sample ppb Code iation Unit Designation Sites U Number

PCRH Rattlesnake Hill pluton 3 25

PHGD Hualapai Peak granodiorite pluton 2+1? 60.71 36

LWW Laramide Wheeler Wash pluton 4 24

PCGK Gold King gneiss pluton 3

QMGN Felsitic, aplitic, quartz monzonite 1 31 gneiss dike

LQVN Laramide quartz vein 1 ? 60.71 66

- 10 - Recommendations For Work Needed To Complete Final Report

Complete ORGDP's originally contemplated assignments such as the analytical work on all samples submitted to ORGDP, i.e.: 436 rocks and two rock-soils and 90 waters, 528 total number of samples.

Compile histograms for each pluton with three or more samples per pluton and show: mean, standard deviation and variance, anomalous threshold, correlation matrix, probability and frequency plots and percentile plots, etc.

Also, do the same for all anomalous rocks both Precambrian and Laramide, all anomalous "vein" occurrences both Precambrian (?) and Laramide (?), Cerbat Moun- tain veins (LVN), Peacock and Hualapai veins (LQVN), and water samples.

Based on analysis of the above results, pick the most useful stated six elements which appear most significantly associated with and diagnostic for uranium. Different elements for the different sample populations may be necessary, because of their differences in ages and origins.

Complete BFEC lab analyses for tin, tungsten, and fluorine on the remaining 298 samples for which we requested that pulps be sent from ORGDP to BFEC, GJO, laboratory. To date, we have complete results on 61 samples and fluorine results only on 9 other samples.

Provide for consultation time with BFEC and ORGDP personnel to decide preferred alternatives and final ways and means to best conclude the project. Some local professional statistitian and geochemist's assistance would also likely prove useful in gaining most from the overall investment.

Allow for professional geological time to complete and clean up geology as mapped to date, in order for it to be finally draftable and reproducible. This also should include some additional research time as pertinent new reference data has appeared since the start of the project and more is expected. A lengthy field trip is necessary to map some problem areas particularly in the Hualapai Mountains. The recon geology with sample locations could then be drafted on mylars of the.37 - 7 1/2' quadrangles and one 15' quadrangle used in the project. This would be a lengthy process. Sixty to eighty more specimens for thin section petrographic analyses should be submitted to S. A. Williams. His additional reports then should be integrated into the project program and some of his consulting time would be helpful as well.

Compile all data results, including additional computer data processing, final drafting of illustrations, typing and reproducing of final report draft in the number of copies required.

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GEOLOGIC EVALUATION OF URANIUM IN PLUTONIC ROCKS

NORTHWESTERN ARIZONA

BIG A INDEX MAP 194 RE MTS Showing U.S.G.S. Quadrangle maps used for field work base sheets, )61 sample site locations and extent of geologic mapping accomplished:

- 'E = Extensive Mapping: 17 - 7 1/2' Quads M = Minor Mapping: 15 - 7 1/2'Quads & 1 - 15' Quad No Symbol = Nil Mappi g: 4 - 7 1/2' Quads WT MTS 962 Project No. 30-79-3307, 21 July 1 980, Subcontract No. 79-348-S

Loghry-Heinrichs Joint Venture S- 12 - IBO LA TRIGO PEAfS Scale .1000.rooo- M 1943-5 -CORTE,- PEAK--" ARtINGTON- N,~ 934-54 .. Mrs1962 1962 ,- /Nr' c77.\L~zr 1 - -

UNN !- -U v 41 BTG--Garnet Mtn. - Music Mtns. BTGG5 TEIC PCCG 52 PCAN LVN PGRP 29. PVQM P~~5 C G5 LVNI M LIP NLVN T PANT PGC& b4 3 30 PGN & PCMVW PCHP PMG N PCRH PCB3S LBX PCFG LDD LHDI '22 42 o _Cottonwood 47 23 / Cliffs 40 PCSM PSPG 67 PFGG PCSC 4 PGPG 46 5G-LQVN PBGD PCHM G PHGQV UBBX

BXVN . 3' 1 PCD-- 32 36 4-LWW 6i o QMGN 8 CPG2 9 '3-PO PCAB WBQM ,7,/37 ., BFSC 27 PCWB BQ PCBT

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SCALE: 0 10 PC SG Miles PCSW PC(51\CL 19 5 58 :GP NORT HVEST ARIZONA PLU TONS , PC VEINS, AND DIKES

Project No. 30-79-3307 21 July, 1980 Subcontract No. 79-348-S Loghry-Heinrichs Joint Venture AN. - Q '*'-I - ..- *7* I., V ) * ~t 7_ -- . -

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" P FQr LOCATION OF PLUTONIC BODIES 1 T K s- J. INCLUDED IN THE N.W. ARIZONA STUDY w,. (As originally assigned) N.W. Arizona Plu-tonics Project No. 30-79-3307 Scale: 0 1 Subcontract No. 79-348-S miles Loghry/Heinrichs Joint Venture - 14 - Hualapai Mountains

The Hualapai Mountains consist of Precambrian schists, gneisses (Gold King gneiss, Beecher Canyon gneiss) and migmatites intruded by the 1800 m.y. Hualapai granodiorite gneiss batholith, possibly (doubtful) a "Wikieup granodiorite" of similar age, followed by the intrusion of the Blue Tank 2-mica pluton, also known as Antler granite, Burch Peak batholith and several conformable micaceous medium- grained leucocratic quartz monzonite sills and plutons (Whiskey Basin, North Whiskey Basin, Shingle Canyon, Yellow Flower, Cavalliere-Wabayuma Peak and other plutons. The strongly anomalous plutons and dikes are younger than the above and are presumed to be part of the 1400 m.y. event.

More detailed and specific resolution of this portion of the project area is feasible and desirable but, of course, will require some additional time to accomplish.

Hualapai Valley Pluton

The low hills north of Antares, a north extension of the Peacock Mountains, consist largely of a radioactive, coarsely porphyritic biotite quartz monzonite stock, here called the Hualapai Valley pluton. It is Precambrian and we believe it will prove to be a + 1400 m.y. granite. It intrudes Precambrian migmatites and black schists as well as intrusive gneisses, and probably intrudes a pluton here called the Butte Tank granite gneiss, and the Antares I pluton, neither being anomalous in uranium. The Valley pluton and older gneisses are intruded by Pre- cambrian diabase dikes (a 1.1 B.Y. event).

A large air radiometric anomaly occurs over the pluton and the gravels to the west. All of 12 sample sites were radioactively anomalous with spectrometer total cps ranging from 94 - 146 and 9 - 25 ppm eU. The samples ranged from 3.4 - 13.23 U/FL and 4.7 - 29.7 U/NT. Nine of the 12 are well-weathered and we suspect their uranium has been partly leached. A single sample site No. 55 with lower U than most of the other samples suggests that uranium could have been depleted by metamorphic or hydrothermal means in a chlorite alteration - deformation zone in the center of the stock.

Peacock Mountains

Weak radiation anomalies and probable rare uranium mineralization was noted on the northerly Sunshine vein-fault zone and more particularly on the NW trending Hackberry Fault - an important structure, presumed to be Laramide in age. Since anomalous radioactivity and rare uranium is associated with presumed Lara- mide (?) mesothermal silver (copper, zinc) deposits along these faults, detailed radiometric surveys along the lengthy fault zones in the Peacock district used with geologic guides, might help to locate blind silver deposits. We think it's unlikely that economic uranium deposits occur in these vein-fault systems.

A pegmatite dike at Site No. 316 with anomalous uranium intruding Precamb- rian schist, thought to belong to the older + 1500 m.y. pegmatite event, was sampled in the Peacock Peak 7 1/2' Quadrangle. It is close to BFEC sample MGC-316 which went 26 ppm CU.

- 15 - Peacock Mountains (Continued)

The only strongly anomalous pluton found in the Peacocks is the southwest exposure of the Blazing Star pluton, a very large pluton believed to be one of the +1400 m.y. granites intruding the weakly anomalous South Peacock pluton. Both units are intruded by Precambrian fine-grained quartz monzonite dikes containing fluorite and allanite, which are strongly anomalous, of which Site No. 166 is one example.

None of the Precambrian diabase dikes and sheets in the Peacock Mountains were radioactively anomalous and none were sampled.

Cerbat Mountains

Purpose of the Cerbat Mountains (Wallapai mining district) reconnaissance was to sample and determine the relationship, if any, between the Laramide vein uranium occurrences and the Precambrian plutons, Laramide stock and Laramide (?) dacite dikes. Designated plutonic bodies to be sampled shown on the Geologic Map of Arizona (Wilson, et al, 1963) include the Laramide Ithaca Peak quartz monzonite (Mesozoic Ithaca Peak granite of Dings, 1951), two other occurrences of "Ithaca Peak granite" which we find to be phyllic-argillic alteration zones in leucocratic Precambrian gneisses and Laramide felsite dikes, which proved to be altered dacite dikes, including the Great White dike and the Bronco dike. We also reconnoitered and sampled the Precambrian Chloride granite (1740 m.y., Silver, 1973) and the younger Diana granite (1390 + 40 m.y., Shafiqullah, et al., 1980) which intrudes the Chloride granite. We examined a coarsely porphyritic quartz monzonite gneiss on the east side of the Cerbat range that may be part of the Cerbat granite batholith, but did not sample it because it was never radioactively anomalous (130 - 150 cps Mt. Sopris). In a helicopter reconnaissance in early 1979, BFEC advisors Burger and Gardner found a more anomalous area of the Cerbat granite near Mount Tipton, but a single sample was not encouraging. A Bendix analysis was 3.2 ppm cU and 10 ppm Th. The Cerbat granite is a large complex batholith covering many square miles and further examination with the time and funds available was not possible.

Cerbat Mountain Veins

From 1952-1956, AEC personnel examined over 138 Cerbat Mountain (Wallapai district) mines, claims or properties for their uranium potential. About 115 showed no radioactivity and 15 showed weak radioactivity of 90-600 cps over backgrounds of 20-50cps. At least 8 showed strong radioactivity exceeding 500 cps with uranium or U308 chemical assays of 0.005% through 1.31%. We visited and sampled 8 of the 15 weak occurrences: Midday, Banner, Mohawk, Cupel, Western Union, Mammoth No. 1 (Jamison) and Summit veins. We sampled 6 of the 7 strongly radioactive veins: the Bobtail, Cerbat, J. G. and Fort Lee(?), Jim Kane, the Detroit Group and the De La Fontaine. We visited at least 15 other properties and determined that the Golconda, Golden Gem and Oro Plata(?) contained small amounts of uranium somewhere in their workings.

- 16 - Cerbat Mountain Veins (Continued)

We took 34 samples representing 20 Cerbat Mountain veins (LVN). These are all Laramide (post 72 m.y.) veins. Five of the 34 samples represent tailings or some mill product material. One of these (Site 264) may represent intermediate concentrate or mill middlings.

Site Number 206 represents a sheared altered and mineralized zone in Pre- cambrian metavolcanics and U-Th mineralization is thought to be Precambrian.

The Laramide (72 m.y.) Ithaca Peak quartz monzonite stock of the Duval copper mine and adjacent Laramide-time altered Precambrian rocks were not radiometrically anomalous (Mt. Sopris 100-230 cps) and none of the rock chip samples were anomalous. Sample number 215, a mineralized breccia dike in the Gross Perimeter pit went 230 cps with 7.48 ppm U-FL and 12 ppm Th. Mine water in the Ithaca pit was anomalous with 63.41 PPB U, no other elements reported.

The Emerald Isle mine is an inactive open pit in tilted Tertiary conglomerate beds carrying black and green (mostly chrysocolla) copper oxides. The mine water is not anomalous in uranium. The whole area, the tailings, the copper ore and the Precambrian gneiss bedrock are not radiometrically anomalous. A sample of copper ore at Site No. 266 proved to be anomalous with 13.25 ppm U-FL, and the tailings sample at Site No.265 contains 143.6 U-FL. No U-NT values are available. The samples could be out of equi- librium, but we feel they should be checked or re-checked further.

Aquarius Mountains

The Aquarius batholith makes up the bulk of the Aquarius range, intrudes Precambrian quartz monzonite gneisses on the north and south and much of it is covered by Tertiary volcanics, tuffs, gravels and Quaternary alluvium. Most of the stock is porphyritic biotite quartz monzonite intruded by pink and gray medium-grained porphyritic granites, aplite dikes, pegmatite dikes and quartz pegmatite veins. Porphyritic biotite quartz monzonite (Site No. 24) intruded by the Laramide Diamond Joe stock in Deluge Wash on the east flank of the Huala- pai range is similar to and could be part of the Aquarius batholith, suggesting that a large part of the Big Sandy valley is underlain by the batholith. Alter- natively, this sample could be part of the Burch Peak batholith, but mapping has not progressed far enough to prove this.

A vehicle traverse of a large part of the Aquarius batholith, including the Boner Canyon tungsten district, found no radiometric anomalies. As a con- sequence, only three samples were taken in the batholith - all fresh rocks - averaging 1.5 ppm U/FL. These granitic rocks were expected to carry more uranium, closer to 4 - 8 ppm, the world average. The total count (Mt. Sopris Scint- illometer C-132) averaged a low 177 cps.

The Rare Metals Precambrian pegmatite uranium occurrence and Catherine and Michael Tertiary sedimentary uranium occurrence were not visited. The Silica Hill muscovite granite pegmatite showed no anomalous count. The Rare Metals pegmatite was variously dated at 1579, 1593, and 1650 m.y. Rb/Sr and a porphyritic quartz monzonite presumed to be part of the Aquarius batholith, at 1587 m.y. by Wasserberg and Lamphere, 1965, minimum ages for the Aquarius batholith.

- 17 - Aquarius Mountains (Continued)

The Precambrian gneissic terrain north of the batholith consists of foliated gray porphyritic granodiorite (?) and a light gray foliated porphyritic qtz monzonite, no contact being observed between the two phases. One or more roof pendants of quartz-biotite schist (Precambrian metasediments) with fine- grained diorite(?) sills were observed.

The Big Ledge is a xenolith of Precambrian metasediments, faulted, brecciated and thoroughly silicified into a felsite and felsite breccia mildly mineralized with chlorite-carbonate-hematite and minor supergene hematite and goethite after sulfides. The silicified felsite zone was seen over a length of at least two miles, but the Big Ledge itself is a ridge of felsite striking +N80*W and dipping 55 - 80 S. Uranium mineralization (up to 1% U308 - Al O'Neill) occurs in yellow-brown limonite silica fault zone breccia averaging 22 inches wide and at least 200 ft. long on the hanging wall contact of the Big Ledge. Scintillometer count was up to 3,000 cps in two prospect pits. Grab sample 153706 was taken from the west prospect pit and a ch.ip sample 153707 over 22 inches of breccia was taken from the east pit. Our samples ran 81 and 40 ppm U/FL and 1440 and 425 ppm U/NT. Al O'Neill's (BFEC) samples from the west pit ran 0.13% and 0.05T U3 08. This prospect was reportedly drilled by Urangesell- schaft in the late '70s. The Uranium Basin prospect has two or more radiometrically anomalous Pre- cambrian granite pegmatite zones hundreds of feet in diameter intruding Precam- brian quartz monzonite gneisses. The pegmatites are believed to belong to the older 1600 m.y. event. These pegmatites were subjected to shearing and chlorite- orange K-feldspar alteration w/uranium mineralization at an unknown time. Sample 100 taken from a small radioactive (4250 cps Mt. Sopris) shear zone in a prospect pit ran 38.01 U/FL and 43.7 U/NT. This prospect has no obvious economic potential.

The region north of the Aquarius batholith exhibits numerous uranium water and rock chip anomalies found in the HSSR and BFEC Prescott area evaluations. Some of the rock chip anomalies are reported to be associated with limonitic shears or fractures and the Big Ledge uranium is in a fault breccia, suggesting a hydrothermal origin for the uranium. An alternate explanation is a possible unconform- ity-vein situation. The uranium could have been leached by groundwater from uraniferous Tertiary lakebeds or tuffaceous volcanics and deposited in faults and fractures in underlying Precambrian rocks. Such source beds could have been present at one time. The Tertiary volcanics we traversed in the region showed no strong radioactivity anomalies, although some of the volcanics in the Mohon Mount- ains do show air radiometric anomalies. Uraniferous Tertiary lakebeds like those at the Catherine and Michael prospect, and those encountered in drill hole PQ-25 were not seen, but could have been present in the north Aquarius Mountains at one time.

The Aquarius reconnaissance was an additional task, not specified in our contract, carried out on the request of our BFEC monitors. Nine man days were spent in this task. Our findings were not encouraging. Further work beyond the scope of

- 18 - this project should include a compilation of sample data and air radiometric data, an investigation of anomalies, and geologic mapping supported by air photo analysis. The objectives of such work would be to delineate uranium anomalies, search for remnant source beds and find fault zones which might contain significant uranium deposits. We doubt any obvious targets exist, but a combination of favorable features could point to areas covered by sediments or volcanics that might be recommended for exploration drilling.

- 18a - WATER SAMPLES

Ninety water samples were taken from wells, springs, streams and mines in rocks ranging from Quaternary alluvium through older Precambrian schist. We have no analytical data for 56 samples. Analysis for 34 water samples (W1-34) have been received. Using an assumed threshold of 60 ppb, 13 of the samples ranging from 60.71 to 214 ppb are anomalous in uranium. These are listed in tabular form as follows:

ANOMALOUS WATER SAMPLES

Water U Rock unit No. E2_ Code Comments

2 79.0 PCDF Mud Spring, uraniferous Dutch Flat pluton.

4 60.71 PCHP,PHGD, American Flag mine, Laramide (?) silver LQVN vein may contain uranium.'

5 78.00 PCD Stream in uraniferous Democrat granite near Democrat Laramide (?) silver-uranium vein. Dump sample 35 went 7.55 U/NT.

6 61.98 PCSW Stouts Well in Stouts well granite (shows no rad anomaly.) Granite 4.25 ppm U/FL

7 66.7 PCGP Well in anomalous, uraniferous Greenwood Peak pluton.

8 214.0 PCGN Upper Beecher Canyon well; could be related to anomalous granite dike(s) cutting non- anomalous gneiss. No. 77 - 14.39ppm U/FL

11 137.40 PCGN Well, Austin Peak Quad. No obvious reason for anomaly. Water and rock U anomalies are common in the north Aquarius Mountains.

16 99.28 PCSC Spring, black Precambrian schist. East Pea- cock Mts. No obvious reason for anomaly.

19 63.41 LIP Active open pit copper mine. Ithaca pit sump. Pluton and ore are not anomalous.

25 69.27 PCGN,LDD, Stream, rocks are not anomalous. Sample could PCDB,LV N reflect uranium in the Cerbat mine Laramide vein.

29 75.86 PCGN Well, no obvious reason for anomaly.

31 71.00 PVQM Spring. Valentine pluton is not anomalous, no obvious reason for anomaly.

33 65.16 PVQM Well. Same comments as above.

- 19 - Anomalous uranium in waters appears to be a sensitive indicator of uranium in veins and plutons. Stream waters proved to be a helpful indicator. It was a wet year and most of the streams did not dry up as they normally do. We would take more stream water samples in any future project. Due to the decline in ranching and the use of pipeline systems, many of the windmills were not operative, so the availability of well water is not nearly so large as the 7 1/2" Quadrangles suggest.

- 20 -

NORTHWESTERN ARIZONA PLUTONICS ROCK CHIP SAMPLE LIST

Notes: Descriptions, mineralogy based on field observations by J. D. Loghry and petrology by S. H. Williams.

Potash feldspar in Precambrian granitic rocks is microcline unless orthoclase (orth) is mentioned.

Sample Numbers 153627, 153679 and 153748 were not used.

LQVN code is reserved for Laramide (?) veins not in the Cerbat Mountains.

Mt. Sopris Site Sample Location Geologic Scint. No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

1. 153603 340 54' 52" 1130 31' 16" PCAB Aquarius batholith, cse por bio (hb) 130 qtz monz 2. 153604 340 54' 55" 1130 29' 39" PCAB Aquarius batholith, pk med-cse equi- 150 granular qtz monzonite phase

3. 153605 350 04' 55" 1130 52' 22" LAP Laramide (?) andesite porphyry dike +N25*W 115 + 900 dip + 60' wide

4. 153606 350 03' 29" 1130 53' 14" PCD Democrat granite gneiss, 2-mica, "medium- 475 grained granite" of Kessler, 1976, 1337 + 38 m.y.

5. 153607 350 03' 11" 1130 53' 59" PHGD Hualapai granodiorite gneiss, 1800 + 470 m.y. (Kessler, 1976), core phase is bio-hb qtz monz

6. 153608 350 02' 12" 1130 54' 24" LQVN Laramide (?) qtz vein, chalcopyrite, 120 CuOx, N40*W, 80*N dip

7. 153609 350 01' 39" 113* 51' 34" PCBT Blue Tank pluton, 2-mica qtz monz gneiss, 350 "Antler granite" of Stensrud & More,1980

8. 153610 350 01' 38" 113 50' 10" LQVN Laramide (?) quartz-sulfide vein-Gold King 150 mine, loading chute Mt. Sopris Site Sample Location Geologic Scint. No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

9. 153611 350 05' 23" 1130 48' 38" PCOA PC Odle Ranch alaskite, cse qtz-micro- 150 cline-muscovite-plagioclase, remnant biotite, tr fluorite - wk U, could be source rock

10. 153612 340 52' 11" 1140 01 14" PCWP Cavalliere - Wabayuma Peak pluton qtz 115 monz gneiss

11. 153613 340 50' 47" 1130 57' 50" PCCC Copper Creek cse porph bio qtz monz tr 325 sericite, fluorite

12. 153614 340 51' 45" 1130 53' 30" PRGR Pink med-gr qtz monz gneiss, north fork 580 Bar IL Canyon, 2-mica, 2% fluorite

13. 153615 340 51' 32" 1130 52' 48" PCBP Burch Peak batholith, cse porph bio granite 225 gneiss, epidote, minor allanite, apatite,

14. 153616 340 52' 22" 1130 47' 31" PCDB Dk gray olivine diabase dike or sheet in- 60 trudes PC gneisses

15. 153617 340 51' 17" 113* 49' 13" PCBP Burch Peak batholith, cse porph bio qtz 250 monz gneiss, epidote

16. 153618 340 43' 48" 1130 57' 04" PGGN Granite gneiss of Neal Hill 425

17. 153619 340 42' 34" 113 56' 02" PCDF Dutch Flat pluton, cse porph bio qtz monz, 500 common fluorite in outcrop

18. 153620 340 42' 23" 1130 55' 50" PCDF Dutch Flat pluton, strongly alt'd qtz- 450 muscovite-chlorite rock

19. 153621 340 43' 33" 1130 51' 52" PCDF Dutch Flat pluton cse porph bio qtz monz- 600 onite, abundant microcline phxsts

20. 153622 340 43' 32" 1130 51' 54" PCDF Dutch Flat pluton cuttings, 1976 location 550 drill hole #156/5, total depth 451', near sample 153621 Mt. Sopris Site Sample Location Geologic Sci nt. No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

21. 153623 340 28' 18" 1130 38' 08" PCSG Signal granite, gray cse about equigranular abundant microcline and qtz xis, minor biotite, wk sericitization 300

22. 153624 350 01' 03" 1130 50' 14" BFSC PC biotite feldspar-schist, biotite, 1800 orange microcline (phxsts or porphyroblasts?), plagioclase, qtz, minor zircon, monazite, sericite, could be meta-igneous sill derived from Blue Tank pluton conformably intruding Gold King gneiss

23. 153625 340 47' 30" 1130 26' 54" PCAB Aquarius batholith, dk gray cse porph bio 200 qtz monz, unweathered from shaft. Spect- rometer data is unlikely. Former orthoclase is metamorphosed to fresh finely- twinned microcline

24. 153626 340 49' 10" 1130 43' 27" PCBP(?) Cse porph orthoclase bio qtz monz gneiss, 300 not a qtz diorite as thin section suggests (153627 was not used) PCAB, PCBP or another pluton?

25. 153628 340 49' 26" 1130 44' 55" LDJ Laramide med gr orth bio granodiorite, 130 bio wk alt to pennine, sericite, qtz-ser vnlts comon, rare py, cpy. 72 m.y. biotite K-Ar date site. Eastern and intermediate facies of Diamond Joe stock

26. 153629 340 50' 13" 1130 47' 11" LDJ Laramide biotite qtz monzonite alt'd to 140 orth-plag-qtz-musc-pennine-calcite-fluorite greisen

27. 153630 340 49' 37" 1130 47' 16" LQ VN American mine mill tailings; Laramide qtz- 135 MoS2 -cpy vein in Diamond Joe stock,bio qtz monzonite facies

28. 153631 340 49' 39" 1130 47' 23" PPQM Precambrian (?) cse porph orth bio qtz monz 250 gneiss, sericite, pennine, py vnlts, blebs, Copper Canyon plug intruded PC migmatites, is intruded, altered by Laramide Diamond Joe stock Mt. Sopris Site Sample Location Geologic Scint. No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

29. 153632 340 49' 52" 1130 47' 35" LDJ Laramide med-gr bio-horn-orth granodiorite, 120 pennine, 2ndry bio.Western outermost bio qtz monz facies of Diamond Joe stock. Drill core, Inspiration hole, qtz-ser-chlor-py vnlts. 2ndry orth along some vnlts

30. 153633 340 50' 46" 113* 54' 37" PCCC Copper Creek pluton at Bar IL Ranch, cse 450 porph bio qtz monz gneiss, ser, epidote, fluorite, allanite(?)

31. 153634 340 49' 56" 1130 56' 38" PCCC Copper Creek pluton, cse porph bio qtz monz 550 ser, fluorite, metamict allanite (?)

32. 153635 340 49' 07" 1130 54' 50" PQMG Precambrian med gr porph bio granodiorite gneiss, wk ser, epidote, tr metamict unknown

33. 153636 340 44' 05" 1130 55' 55" PCDF Dutch Flat pluton, cse porph bio qtz monz, 650 goethite, sericite; minor fluorite on hairline fracs and corrodes plagioclase-related to allanite with biotite

34. 153637 350 08' 35" 1130 54' 56" PCHP Hualapai Peak pluton, 1397 + 69 m.y."Hualapai 340 Granite" of Kessler, 1975, cse porph granite, with tr monazite, fluorite, allanite, ser. zircon, apatite, epidote, well-weathered,red hem reply mag.and mafics in microcline phxsts, epidote, goethite in biotite

35. 153638 350 05' 38" 1130 53' 14" PCHP Hualapai Peak pluton, cse porph granite, minor 240 allanite, ser.,apatite, epidote, hematite

36. 153639 350 04' 35" 1130 52' 53" PCHP American Flag silver mine adit dump, Hualapai 275 (LQVN) Peak granite. minor Laramide(?) qtz vein, altered wall rock Mt.Sopris Site Sample Location Geologic Scint. No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

37. 153640 350 04' 28" 1130 52' 14" PHGD Precambrian Hualapai granodiorite gneiss 150 bio-horn granodiorite, + 50% plag, minor ser, ep. Granodiorite gneiss of Kessler, 1976, 1800+ 450 m.y.

38. 153641 350 04' 16" 1130 52' 14" PCD Precambrian Democrat pluton, med-grained 350 2-mica bio ser/musc qtz monz(?) gneiss, all bio gone to goethitic leucoxene, plag part gone to ser/musc. Red, well weathered. Qtz- microcline plag-musc rock. Host to Democrat silver-uranium vein. "Medium-grained granite" of Kessler, 1976, 1337 + 38 m.y.

39. 153642 350 04' 14" 1130 51' 49" LQVN Laramide(?) vein and waste middle adit 4600 (PCD) Democrat mine, anomalous rad, rare qtz sulfide vein material with black pitchblende(?)

40. 153643 350 04' 14" 113 51' 49" LQVN Laramide(?) vein and waste middle adit 9000 (PCD) Democrat mine, anomalous rad, rare qtz sulfide vein material with black pitchblende(?)

41. 153644 350 04' 14" 1130 51' 49" LQVN Laramide(?) vein-fault zone,limonite, 650 (PCD) MnO stained clay gange, alt'd rock, mouth of middle adit

42. 153645 350 04' 31" 1130 48' 58" LWW Laramide med gr bio granodiorite pluton of 100 Wheeler Wash, fresh rock south of porphyry Cu-Mo prospect. Plag is dominant, 5-10% qtz, orth, bio

43. 153646 340 49' 40" 1130 47' 22" LQVN Laramide (72 m.y.) small qtz-py-cpy-MoS2 pod 450 (LDJ) in qtz vein with 2ndry orth, ser, kaolin, goethite, fluorite in biotite qtz monz facies of Diamond Joe stock Mt.Sopris Site Sample Location Geologic Scint No. Number Latitude Longitude Unit Code Suggested name, description, comments CPS

NWA 153647- are water samples W-1 through W-5 (see Water Sample List) 44-48 153651

49. 153652 350 24' 48" 1130 47' 13" PQMG Precambrian (?) cse locally porph orthoclase -- qtz monz gneiss strong epidote, sericite, hydro-biotite, qtz alt'n. Does not resemble Antares I or II plutons, mapped as separate unit, age uncertain

50. 153653 350 26' 07" 1130 48' 05" PCHV Hualapai Valley pluton, porph cse bio qtz monz, - qtz, ser, pennine, leucoxene alt'n 51. 153654 350 26' 44" 1130 48' 57" PCHV Hualapai Valley pluton, med-cse porph bio qtz monz

52. 153655 350 25' 02" 1130 48' 57" PCAN Antares I pluton, 1700 (?) m.y. cse porph, scattered large microcline phxsts, bio-hb qtz monzonite,sphene, apatite, v rare metamict allanite

53. 153656 350 27' 28" 1130 49' 47" PCHV Hualapai Valley pluton, porph bio qtz monz, abundant crowded large and small pink microcline phxsts, mild ser, ep, calcite, fluorite alt'n of plagioclase along grain boundaries

54. 153657 350 27' 18" 1130 49' 35" PCHV Hualapai Valley pluton, med-cse crowded porph bio qtz monz, rare minute fluorite beads in plagioclase xls', v rare metamict allanite. weak ser, pennine alt'n

55. 153658 350 26' 46" 1130 49' 19" PCHV Hualapai Valley pluton, porph bio qtz monz,- red tiematite stain from magnetite oxidation, sheared and broken across foliation on numerous flat fractures, fracs filled with blk-gn chlorite(?), +3" wide fracs may have chlorite breccia fillings, from a 1300' x 1300' area of cataclastic deformation - a "chlorite breccia" zone in the heart of the pluton. Crushed and recrystallized, qtz and feldspar, incl albitized Mt.Sopris Site Sample Location Geologic Scint No. Number Latitude Longitude Unit Code Suggested name, description, comments CPS

55. Continued plagioclase fragments cemented by granular epidote in crush zones cutting the fabric with stretched biotite alt'd to pennine

56. 153659 350 26' 36" 1130 49' 01" PCH V Hualapai Valley pluton, porph bio qtz monz orange outcrop, K-feldspar, chlor, calcite, siderite alt'n

57. 153660 350 26' 33" 1130 49' 35" PCHV Hualapai Valley pluton, cse porph bio qtz monz, deeply weathered

58. 153661 350 28' 07" 1130 50' 35" BTGG Precambrian Butte Tank biotite granite gneiss, intrudes Precambrian migmatites, may be intruded by Hualapai Valley pluton. Minor sphene and partly metamict allanite cluster with biotite. Rock is not radioactively anomalous

59. 153662 350 27' 13" 1130 51' 05" PCHV Med-gr porph bio qtz monz dike intruding PC gneiss presumed to be assoc with Hualapai Valley pluton

60. 153663 350 27' 41" 113 50' 20" PCHV Hualapai Valley pluton, cse porph bio qtz monz

61. 153664 350 26' 24" 1130 50' 50" PCHV Hualapai Valley pluton, med-cse porph bio granite, sericite,tr fluorite, hematite replace plagioclase. Feldspars may be sericitized near radioactive minerals now altered to leucoxene and hematite are present in adjacent biotite

62. 153665 350 26' 14" 1130 50' 04" PCHV Hualapai Valley pluton, porph med-cse, mostly cse, well-weathered bio qtz monz, hematite common in K-feldspar phxsts Mt. Sopris Site Sample Location Geologic Scint No. Number Latitude Longitude Unit Code Suggested name, description, comments CPS

63. 153666 350 25' 57" 1130 50' 23" PCHV Hualapai Valley pluton, med-cse porph bio qtz monz gneiss,f.g. biotite and thin selvages biotite along foliation are common

64. 153667 350 22' 45" 1130 43' 37" PVQM Precambrian Valentine pluton (1740 m.y., Silver 1967) med-gr porphyritic granodiorite gneiss, strong foliation, bio, hb, minor pennine, epidote. West part of pluton is cut by numerous fractures with goeth, hem after sulfides, sometimes epidote in N5 W, 70 E; N510 W, 80 N; N730 W, 72 S; E, + 900 sets. County and state geologic maps call it a "Laramide granite". It definitely is Precambrian

65. 153668 350 22' 17" 1130 40' 07" PVQM Precambrian Valentine pluton, med-gr granodiorite gneiss

66. 153669 350 25' 09" 113 46' 20" PVQM Precambrian Valentine pluton, med gr porph granodiorite, bio, musc, minor epidote calcite and pennine; unweathered rock from road cut Rte 66

67. 153670 350 24' 25" 1130 48' 27" PGRP Precambrian cse gr granite pegmatite is pre- diabase and believed to be pre-Antares I and II plutons. Thin section is a tonalite, but is not representative of the unit which is rich in K-feldspar. Minor sericite, 2ndry albite, leucoxene, tr fluorite.

68. 153671 350 24' 27" 1130 48' 31" PCAN Precambrian Antares I pluton, porph bio-hb qtz monz gneiss with sphene, magnetite, sericite, apatite Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

69. 153672 350 23' 55" 1130 48' 03" PANT Precambrian Antares II pluton, intrudes-- Antares I pluton; v cse crowded porph bio qtz monz with cse sphene, hb, magnetite, apatite, tr zircon, metamict mineral prob'ly allanite. Rock is about 50% K-feldspar phxsts.

70. 153673 340 24' 50" 1130 39' 02" PCAP Precambrian Artillery Peak pluton. pink cse--- porph granite minor hematite, weak sericite, sphene. possible +1400 m.y. granite intruding Burch Peak batholith

71. 153674 340 23' 37" 1130 38' 05" PCAP Precambrian Artillery Peak pluton bio qtz monz--- gneiss, biotietehc e,fluorite. ORGDP and spectrometer Th do not correlate

72. 153675 340 27' 07" 1130 38' 04" PCAP(?) Precambrian Artiller Peak pluton (?) cse porph--- granite, sphene, magnetite, wk hb, sericite, epidote, tr allanite

73. 153676 340 29' 13" 1130 33' 09" PCGP(?) Precambrian granite, could be plug of Greenwood--- Peak intruding Burch Peak batholith. cse bio granite, perthitic microcline, tr zircon, some grains metamict

74. 153677 340 25' 48" 1130 30' 36" PCBP Precambrian Burch Peak pluton, cse gr gneissic --- granite, wk sphene, apatite, sericite, sausserite

75. 153678 340 29' 29" 1130 27' 59" PCGP Precambrian Greenwood Peak pluton cse bio qtz monz--- gneiss, sheared; weak ser, chlor, sphene, partly metamict allanite occur with biotite

(Sample No. 153679 was not used) Mt.Sopris Site Sample Location Geologic Scint No. Number Latitude Longitude Unit Code Suggested name, description, comments CPS

76. 153680 340 28' 28" 1130 27' 40" PCGP Greenwood Peak pluton (?) cse grained porph pink granite

77. 153681 340 41' 31 1130 50' 34" GRGN Precambrian med gr dike cuts Beecher 380 Canyon area qtz monz gneiss. Pink bio qtz monz, crush zones part rexllized, bio with tr monazite, part metamict zircon, fluorite along grain boundaries, esp. in crushed zones

78. 153682 340 41' 06" 1130 51' 56" PCDF Dutch Flat pluton, cse porph bio qtz monz 590

79. 153683 340 34' 50" 1130 42' 26" PCGS Precambrian Groom Springs pluton near-- Little Santa Cruz Sp., gray med-cse porph bio qtz monz, bio, magnetite, sphene, plag strong alt'd to sericite, pennine, minor clinozoisite. Microcline and plagioclase phxsts about same size, same abundance.

80. 153684 340 35' 30" 1130 44' 40" PCGS Precambrian Groom Springs pluton. Medium- grained porphyritic gray granite

81. 153685 340 35' 27" 1130 42' 49" PCGR Precambrian med-gr, red brown north-trending 300 granite dike on SW border of Groom Springs pluton. Bio-hrb granite, magnetite, part metamict allanite, tr fluorite, apatite, sphene, zircon. Definitely more radioactive than Groom Springs pluton. Flat fractures due to the region's cataclastic deformation

82. 153686 340 28' 52" 1130 31' 16" PCGP Greenwood Peak pluton, pink cse porph bio 450 granite gneiss mostly coarse microcline, minor sphene, magnetite, tr apatite, allanite.

83. 153687 340 28' 34" 1130 29' 13" PCGP Greenwood Peak pluton, deformed gray cse oorph granite, cse qtz, microcline, crush zones, bio assoc. with musc, epidote, tr sphene, apatite, 7ircnn Mt.Sopris Site Sample Location Geologic Scint No. Number Latitude Longitude Unit Code Suggested name, description, comments CPS

84. 153688 340 30' 15" 1130 28' 26" PCGP Greenwood Peak pluton, pink cse porph qtz--- and microcline phxsts size equal, strongly deformed qtz monzonite, biotite traces, most altered to sericite, goethite. Tr zircon, apatite, partly metamict allanite

85. 153689 340 27' 37" 1130 28' 29" PCGP Greenwood Peak pluton, gray brecciated granite,--- remnant plag, biotite with apatite, magnetite, largely alt'd to muscovite, microcline mostly unalt'd

NWA86-89, 153690-693 are water samples W-6 through W-9

90. 153694 350 10' 12" 1130 38' 21" PCBS Blazing Star granite pluton Precambrian 550 (+ 1400 m.y.(?) ). pink cse porph granite or qtz monz, crowded cse pink microcline phenocrysts larger than cse, abundant qtz pods, non-foliated, minor cse bio

91. 153695 350 10' 12" 1130 38' 23" PCBS Blazing Star granite pluton. Pink cse porph 1410 qtz monz, weak foliation, minor biotite, common disseminated purple fluorite sometimes assoc. with black pitchblende(?) or allanite(?), powdery yellow unknown over several hundred square feet with 500-800 cps Mt. Sopris Scint, sample taken near 1410 cps maximum. Prospect pit was not found, but sample is believed to be near or on Blazing Star claim of AEC PRR report, and granite was so named by Al O'NeillBFEC,1979. Area of Rocky Mountain Energy 1976 Hermus claims and.location drill holes

92. 153696 350 09' 53" 1130 39' 00" PCBS Blazing Star granite. Pink-brown cse porph 300 granite, almost no biotite, sparse purple fluorite. Muscovite/sericite attacks feldspars, replaces biotite. Neotocite, a manganese-iron oxide, stains fractures and cleavages. Near RME location drill hole GF/34 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

93. 153697 350 10' 17" 1130 39' 14" PCBS Blazing Star granite. Pink non-foliated 500 cse porph granite, common fluorite

94. 153698 350 10' 07" 1130 38' 39" PCBS Blazing Star granite. Pink porph cse 325 granite, minor fluorite

95. 153699 350 10' 30" 1130 38' 38" PCBS Blazing Star granite, pink cse porph 450

96. 153700 350 10' 55" 1130 38' 29" PCBS Blazing Star granite, red-pink cse porph, 700 minor biotite, fewer qtz phxsts than previous sites, strong red hematite stain, qtz monz, biotite part alt'd to pennine, muscovite, plag has wk sericite. Near RME location drill hole GF 35, north edge of pluton outcrop

97. 153701 350 10' 11" 1130 38' 03" PBGD Precambrian porph bio granodiorite with prom- 300 inent microcline 20-40 mm phxsts, also zones med-grained gneisses of similar composition with no large phxsts, older + 1700(?) terrain intruded by Blazing Star granite. Weak plag sericitization; biotite has slight hematite oxidation, has minor mag, sphene, apatite, tr zircon, allanite

98. 153702 350 10' 32" 1130 38' 05" PCBS Blazing Star granite, pk porph granite, NE 450 outcrop

99. 153703 35* 05' 17" 1130 37' 00" PPQM Precambrian med gray, med-grained slightly 235 gneissic porph bio qtz monz represents much of the older non-radioactive terrain in the northern Aquarius Mountains (Austin Peak 7 1/2' quad) north of the Aquarius batholith numerous white 4-5 mm plag and microcline phxsts, a few sparse 20-30 mm phxsts. Thick biotite books assoc. with minor sphene, magnetite, epidote, apatite, tr zircon, weak sericite in plagioclase Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

100. 153704 350 05' 39" 1130 37' 02" UBBX Precambrian granite pegmatite with 4250 chlorite and K-feldspar alteration intrudes biotite qtz monzonite. Prospect pit on small rad anomaly - a biotite-rich shear zone N35 E, dip 73*E, breccia with clasts microcline and plagioclase, some with apatite, strained qtz. Biotite books float in prochlore paste replacing them. Feldspars also show prochlore and Kaolin alt'n. "Hottest" zone sampled is perhaps 10 feet long and 3 inches wide. Other scint anomalies in this and another peg- matic lens to the west are 500-600 cps

101. 153705 350 04' 15" 1130 35' 37" PPQM Precambrian light pink gray porph qtz monz 150 gneiss, less biotite (+1/3) and microcline, more qtz and plagioclase than NWA-99,153703. A felsic phase of the older non-radioactive terrain of the north Aquarius Mountains. Both phases cover many square miles. A contact was not seen, may be gradational. Trace sphene, apatite, epidote, sericite, fluorite, neotocite, magnetite, zircon and hornblende

102. 153706 350 04' 08" 1130 34' 47" BXVN Big Ledge uranium prospect, AEC PRR. Grab 3000 sample from prospect pit and dump on 18-20 inch wide quartz-chert-goethite fault breccia about 300 feet long strikes N67 E, dips 62 S in the hanging wall of the Big Ledge, a roof pendant of silicified, chloritic meta-sediments with numerous silica veinlets and breccia zones an estimated 50-300 feet wide and several thousand feet long in Precambrian porph qtz monz gneiss Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

103. 153707 350 04' 08" 1130 34' 46" BXVN Big Ledge uranium prospect. Prospect pit 3000-5000 l00'E of NWA-102 on same fault zone. Med yellow brown goethite-stained silicified fault breccia 22 inches wide with angular fragments of silicious siltstone, quartz clasts and intensely silicified cherty quartz in a matrix of similar fine material. A few cherty quartz veinlets cut the matrix, but the material was not silicified in situ. Pervasive earthy goethite stain and voids are filmed with a botryoidal crust of goethite. The Big Ledge deposit is the subject of AEC PRR but was mislocated in that report

104. 153708 350 09' 09" 1140 05' 04" PCHM Precambrian Holy Moses pluton, a cse porph 210 bio qtz monz. Thin section study by Williams calls it an orthoclase granite, surprising since most Precambrian granites in the region contain microcline

105. 153709 350 09' 09" 1140 05' 04" PCPG White plagioclase pegmatite ledge with less than 350 2% each of stilbite, sericite and magnetite and tr sphene, cuts Holy Moses granite

106. 153710 350 09' 21" 1140 04' 56" LBX Bi Metal gold mine mill tailings near 250 McConnico. Laramide(?) mineralized breccia with Precambrian granitic gneiss and metased fragments, quartz veinlets, hematite and goethite (after pyrite). Fine gold was ex- tracted from underground workings and 200 foot wide open cut in the oxide zone of the breccia pipe or zone Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

107. 153711 350 09' 21" 1140 04' 52" PCGR Leucocratic, med-gr sericite alt'd intrusive 300 rock with dissem, vnlt pyrite, believed to be Laramide(?) granite at Bi Metal mine, but microcline suggests it is Precambrian granite - could be alt'd Holy Moses, but doesn't look like it; possibly a slightly younger Precambrian granite. Thin section: granite with 28% qtz, 45% microcline, 20% plagioclase, 0.5% biotite, 2% sericite after biotite, plagioclase, 3% heulandite, 1% kandite, 1% leucoxene, tr zircon. Healed crush zones contain voids lined by euhedral qtz and microcline, packed with kandite paste or clusters of heulandite crystals

108. 153712 350 08' 54" 1140 04' 55" LHDI Laramide(?) Cretaceous or Tertiary dk gray fine-gr 50 hornblende diorite with sparse zenoliths of med- gr hornblende diorite porphyry, definitely intrusive.Plagioclase, hornblende, with augite, magnetite, minor sphene, apatite, weak penninization of hornblende

109. 153713 350 09' 02" 1140 04' 55" PCHM Precambrian Holy Moses pluton, cse porph bio 170 granite or qtz monz

110. 153714 350 08' 08" 1140 04' 49" PCHM Precambrian Holy Moses pluton, unweathered 250 gray cse porph-bio, hornblende orthoclase qtz monz. Biotite, hornblende contain tr allanite (fresh), apatite, sphene, zircon. Tr fluorite on grain boundaries near mafites

111. 153715 350 04' 31" 1140 03' 00" QMGN Precambrian lt.gy, yellow-weathering med-grained 180 qtz monzonite gneiss of Shingle Canyon, well- banded, with minor biotite, magnetite, tr zircon. Sparse to moderate red hematite stain. N50 E, dip 800 N foliae Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

112. 153716 350 03' 15" 114 04' 06" PCGN Precambrian gy med-grained granular qtz 170 monzonite gneiss, older terrain intruded by Shingle Canyon type gneiss, Holy Moses pluton and granite pegmatites. Quartz, microcline, plagioclase biotite, magnetite, tr zircon gneiss.

113. 153717 350 03' 59" 1140 05' 56" PCGN Precambrian gy granular qtz monz gneiss, 200 older terrain as in No. 112, +N270 E, dip + 900 foliation; cut by numerous white granite pegmatite dikes. Quartz, plagioclase, microcline, biotite, minor sericite tr apatite, allanite, epidote. Allanite is partly metamict

114. 153718 350 04' 11" 1140 05' 56" PGPG Precambrian (1100-1200 m.y.) cse lt gy porph bio 650 granite pegmatite, 15 feet wide, strikes N400 E, dip + 90

115. 153719 350 05' 12" 1140 06' 02" PCHM Precambrian Holy Moses pluton med-cse porph bio 615 qtz monz, strong foliation N30*E, 730NW dip. Well-weathered. Intrudes Precambrian qtz monz neis ndmeteds, extends under Tertiary red, blackbasalt flows and volcanic breccias 116. 153720 350 04' 03" 1140 06' 11" PCHM Precambrian Holy Moses pluton, cse porph foliated 1140 (N60 0 E, dip 740NW) microcline biotite granite. Biotite-plagioclase foliae contain partly metamict allanite (0.5%'). Fluorite, sericite, monazite,zircon 117. 153721 35* 04' 20" 1140 06' 16" PCHM Precambrian Holy Moses pluton, v coarse porph 390 abundant, crowded K-feldspar phxsts, cse biotite clots, strongly foliated

118. 153722 350 09' 23" 1140 04' 18" LBX Laramide(?), Cretaceous or Tertiary, hematite- 170 goethite-jarosite (after pyrite), qtz vnlts, breccia vein with fragments of alt'd seriticized Precambrian meta seds, upper adit dump NE of Bi Metal mine. PC gneiss near breccia foliae N27*E, +900 dip Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

119. 153723 350 07' 22" 1140 06' 10" PCHM Precambrian Holy Moses pluton, cse porph 190 bio qtz monz from prospect pit, gray Tertiary(?) porphyry dike nearby, moderate epidote is common, goethite on fractures

120. 153724 350 05' 41" 1140 06' 20" PCHM Precambrian Holy Moses pluton, cse porph bio 200 hornblende qtz monz with propylitized biotite schlieren largely alt'd to epidote, chlorite

121. 153725 350 05' 51" 1140 05' 59" PCHM Precambrian Holy Moses pluton, cse porph bio 170 qtz monz, unweathered blasted mat'l from railroad cut

122. 153726 350 07' 37" 1140 05' 21" PCHM Precambrian Holy Moses pluton, cse porph bio 150 qtz monz, sparse epidote, unweathered blasted material in railroad cut

123. 153727 350 07' 36" 1140 04' 15" PCHM Precambrian Holy Moses pluton cse porph bio 500 qtz monz dike intrudes med-grained qtz monz gneiss with lower count (325 cps), foliation roughly parallel to north trendir.g dike contacts

124. 153728 350 07' 49" 1140 04' 48" PCHM Precambrian Holy Moses pluton, cse porph bio 230 qtz monz

125. 153729 350 07' 04" 1140 03' 05" PCGN Precambrian fine to med-grained bio qtz monz 210 gneiss sill(s) intrudes meta sed gneisses, schists, minor sericite, epidote, tr apatite, allanite, v rare metamict allanite. anomalous Ag, other metals are unexpected. Could samples 153729 and 153730 have been mixed up at ORGDP? Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

126. 153730 350 07' 27" 1140 02' 54" PCSC Precambrian, dk black-green chloritized 240 bio-qtz, pink K-feldspar schist, alt'd N25-40 E shear zone with goethite, carbonate, qtz of Holy Moses mine, Laramide(?) mineralization. Adjacent gneiss strikes N50 E, dips 750 NW. Lack of metal anomalies suggests this sample was mixed up with 153729

127. 153731 350 07' 05" 1140 03' 20" PCHM Precambrian Holy Moses pluton, cse porph 860 bio qtz monz dike, 200-300 feet wide, some qtz phxsts are hematite stained; bound on east and west by med-grained qtz monz gneiss

128. 153732 350 07' 00" 1140 03' 41" PCHM Precambrian Holy Moses pluton, cse porph bio 360 qtz monz, badly weathered

129. 153733 350 06" 57" 1140 03' 57" PCHM Precambrian Holy Moses pluton, gray cse porph 600 bio qtz monz cuttings from Rocky Mt. Energy location drill hole (post and number gone)

130. 153734 350 06' 58" 1140 03' 56" PCHM Precambrian Holy Moses pluton, almost un- 530 weathered moderately kaolinized cse porph bio qtz monz from drill pad. U values about about 1/2 of drill cuttings sample above

131. 153735 350 06' 34" 1140 04' 02" PCHM Precambrian Holy Moses pluton, cse porph bio 860 qtz monz, 1976 location drill hole cuttings Rocky Mt. Energy, no hole ID

132. 153736 350 06' 34" 1140 04' 02" PCHM Precambrian Holy Moses pluton, near east 1060 contact; cse porph bio-horn qtz monz, Dk gray to black biotite and hornblende-rich gneiss in outcrop next to drill pad of previous sample, fluorite common. Thin section: qtz-rich 40%, 4% microcline, 2% plagioclase, 24% biotite, 25% hornblende, 3% mostly metamict allanite, 1% sphene, 1% apatite Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

133. 153737 350 06' 31" 1140 04' 13" PCHM Precambrian Holy Moses pluton, location drill 600 hole cuttings, RMEC, no ID; gray,gray-green bio qtz monz, some pink alteration K-feldspar, some biotite alt'd to chlorite

134. 153738 350 06' 31" 1140 04' 13" PCHM Precambrian Holy Moses pluton, gray, gray- 525 green cse porph bio qtz monz, some bio alt'd to chlorite in alt'd shear zone, with pink K-feldspar, chlorite, goethite (after FeC03 ); from pad of previous sample hole

135. 153739 350 07' 24" 1140 04' 10" PGGN Precambrian biotite granite gneiss drill 380 cuttings from roof pendant in Holy Moses pluton, sample may include some Holy Moses; biotite is 30% alt'd to chlorite. RMEC location drill hole 136. 153740 350 06' 42" 1140 04' 25" PCHM Precambrian Holy Moses pluton, cse porph bio 580 qtz monz outcrop N. of Boulder Spring; rare fluorite

137. 153741 350 06' 34" 1140 04' 26" PCHM Precambrian Holy Moses pluton near Boulder 1400 Spring, cse porph bio granite, abundant microcline, biotite foliae contain sericite, apatite, zircon, 1% part metamict allanite and purple fluorite. Plagioclase near biotite is mildly sericitized

138. 153742 350 06' 32" 1140 04' 30" PCHM Precambrian Holy Moses pluton, cse porph bio 700 qtz monz, mod chlorite and pink K-spar alt'n. RMEC drill hole cuttings

139. 153743 350 06' 33" 1140 04' 30" PCHM Precambrian Holy Moses pluton, alt'd porph 1200 bio qtz monz, prospect pit, bio alt'd to chlorite, abundant pink K-feldspar, goethite after minor sulfides Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

140. 153744 350 06' 22" 1140 04' 22" PCHM Precambrian Holy Moses pluton, cse morph bio 400 qtz monz, unalt'd drill hole cuttings RMEC location drill hole

141. 153745 350 06' 12" 1140 04' 17" PCHM Precambrian Holy Moses pluton cse porph bio 350 qtz monz, strongly alt'd, biotite 100% alt'd to chlorite, some K-feldspar alt'd to chlorite, pink alt'n K-feldspar

142. 153746 350 06' 09" 1140 04' 27" PCHM Precambrian Holy Moses pluton, cse porph bio 520 qtz monz, bio part alt'd to chlorite, RMEC location drill hole cuttings

143. 153747 350 06' 09" 1140 04' 27" PCHM Precambrian Holy Moses pluton, lt green gray 560 cse porph bio granite biotite alt'.d to chlorite, pink K-feldspar, hematite alt'n; outcrop at drill pad of previous sample. Thin section: qtz 24%, microcline 44%, plag 20%, epidote 5%, clinochlore 3%, sphene 1%, sericite 2%, 0.5% partly metamict allanite

Sample No. 153748 was not used

144. 153749 350 06' 32" 1140 04' 40" PGGN Precambrian gray bio granite gneiss, older 250 terrain intruded by Holy Moses pluton; cuttings Rocky Mt. Energy Co. location drill hole 156/13, 570 feet, Oct. 1976 on Debbie No. 336 claim Mt. Sopris Scint Site Sample Location Geologic CPS No. No. Latitude Longitude Unit Code Suggested name, description, comments

bio qtz monz or granite 550 145. 153750 350 06' 22" 1140 05' 04" PCHM Holy Moses cse porph pluton, cuttings RMEC location drill hole 156/11, 565 feet, Oct. 1, 1976, Debbie No. 367 claim

840 146. 153751 350 06' 11" 1140 04' 55" PCHM Holy Moses cse porph bio qtz .monz or granite pluton cuttings, RMEC location drill hole GF/21, Debbie No. 367 claim, Oct.16, 1976

880 147. 153752 350 06' 11" 1140 04' 55" PCHM Holy Moses cse porph bio qtz monz or granite pluton, partly chloritized outcrop at previous drill hole

350 148. 153753 350 06' 25" 1140 0.5' 31" PCHM Holy Moses cse porph bio qtz monz or granite pluton

PCHM Holy Moses cse porph bio qtz monz gneiss, 440 149. 153754 350 06' 15" 1140 06' 00" 0 contact faces, hematitic, foliae N55E,60 N Mt.So0pris Site Sample Location Geologic Sc int No. No. Latitude Longitude Unit Code Suggested name, description,comments CPS

150 153755 350 05' 59" 1140 06' 16" PCHM Holy Moses cse porph bio qtz monz or granite pluton, alt'd K-feldspathized material from mineralized shear zone, shaft dump of Gold Crown claim, K-feldspar - qtz rock, biotite and plagioclase gone 250

151 153756 350 05' 34" 1140 05' 21" PCHM Holy Moses cse porph bio qtz monz or granite, gray and pink K-feldspar phxsts, outcrop at RMEC drill hole site, cuttings pile is obliterated 820

152 153757 350 Q5' 28" 1140 05' 42" PCHM Holy Moses cse porph bio qtz monz or granite, red, hematitic drill hole cuttings. RMEC location drill hole near Foothill patented claim. 500

153 153758 350 05' 27" 1140 05' 43" PCHM Holy Moses cse porph bio qtz monz or granite gneiss, near RMEC drill hole and substantial old gold mine, pink- gray K-feldspar alt'n, foliae N 350 E

154-157 153759- are water samples W-10 through W-13 153762 (See Water Samples List)

158 153763 350 11' 59" 1130 54' 43" PCRH Precambrian Rattlesnake Hill granite gneiss, Rb'/Sr datel312+/- 23 m.y., probably reset from 1540 or 1620 m.y. (Kessler, 1976). Medium-grained biotite porphyritic quartz monzonite, gneiss, about equigranular qtz, microcline,plagjoclase part alt'd to sericite- biotite, tr apatite. Foliae N 40 b E, dip 660 NW. Abundant 1-2mm qtz phxsts, 2-3 mm white K-feldspar phxsts, +/- 10% biotite -lmm. Granite pegmatites 1" - 6", 10-20. ft. spacing 320 are common Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

159 153764 350 12' 15" 1130 54' 49" PCRH Precambrian Rattlesnake Hill pluton fine-medium-grained qtz monz gneiss, few cse granite pegmatites to 4 ft. wide, about 300 ft. spacing. Anomalous (36ppm) silver, copper, chromium, molybdenum reported by ORGDP is not possible in this unmineralized rock sample 315

160 153765 350 12' 23" 1130 54' 31" PCRH Precambrian Rattlesnake Hill pluton. Medium-grained porph qtz monz gneiss, Foliae N 40-44 E, streaks of goethite common in all samples. Cut by cse gr granite gegmatites to 10 ft. wide. +/- N 4OUE, +/- 900 dip 290

161 153766 350 12' 13" 1130 33' 59" PFGG Precambrian Faculty Springs quartz monzonite gneiss, fine-grained sub porphyritic biotite qtz monzonite gneiss sill intruding older Precambrian gneiss. Heavily sheared bio qtz monz gneiss, biotite part alt'd to sericite, epidote; 26% qtz, 20% microcline, 37% plag 7% biotite, 4% sericite, 5% epidote, 0.5% magnetite, tr monazite, leucoxene. BFEC sample , A.0'Neill MGC-200 22.4 c U. 700 cps. Tin Mt. 7 ' quad 525

162 153767 35 10' 12" 113 38' 19" PCBS Precambrian Blazing Star granite, pink med-grained porph granite, cuttings. Rocky Mountain Energy Company location drill hole GF/32, 125 ft., Oct. 27, 1976 Hermus No. 32 claim 280

163 153768 350 10' 00" 113 38' 22" PCBS Precambrian Blazing Star granite, pink coarsely porphyritic granite, minor biotite part bleached, red hematite stain around biotite and K-feldspars, common disseminated purple fluorite. Thin section: sheared Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

163 (continued) granite with squarish 25% plag subhedra in a coarser matrix of 21% quartz and 51% microcline, 3% muscovite, tr magnetite, leucoxene, biotite thoroughly alt'd to muscovite 500

164 153769 350 10' 00" 1130 38' 23" PCBS Precambrian Blazing Star granite cuttings from location drill hole near above sample. Rocky Mountain Energy GF/33, 150 ft, Oct.27-28, 1976 Hermus No. 9 claim 510

165 153770 350 10' 45" 1130 45' 53" PSPG Precambrian South Peacock pluton, hornblende biotite (+/- 40%) quartz monzonite. Biotite books to 6 x 6 mm are common, some to 6 x 14mm. Abundant matrix quartz, sparse clear quartz phenocrysts are distinctive. Pluton is intruded by granite pegmatite dikes, fine to medium-grained granite dikes 1 inch to 4 inches wide and the Blazing Star porphyritic granite pluton and dikes. Thin section: quartz monzonite, deformed, healed, intergrown plagioclase and microcline, v. large biotite books cluster with hornblende and accessory minerals. Minor alt'n, plag to saussurite, s'phene to leucoxene; 7% qtz, 25% microcline, 29% plag, 22% hornblende, 14% biotite; 1% apatite, sphene; tr magnetite epidote, zircon, fluorite, sericite 325 Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

166 153771 350 10' 19" 1130 45' 36" PCFG Precambrian fine-grained biotite quartz monzonite gneiss, radioactive dike, N 25- 400 W, dip 35 - 450 SE, intrudes South Peacock pluton, pre-pegmatite, post Blazing Star. Thin section: qtz, microcline, plagioclase, minor biotite remains, alt'd to pennine and epidote, sericite; magnetite, tr sphene, allanite. Inter- stitial fluorite assoc. with late fracturing 500

167 153772 350 10' 19" 1130 45' 37" PSPG Precambrian South Peacock pluton, med- grained porphyritic biotite hornblende granite, wk Foliae. Minor sphene, apatite, magnetite; tr epidote, sericite, calcite. Tr fluorite on grain boundaries or within hairline cracks in feldspars 300

168 153773 350 10' 18" 1130 45' 39" PCBS Precambrian Blazing Star pluton med-cse porph bio qtz monz gneiss, qtz, microcline plagioclase, biotite, minor magnetite, sphene, allanite, sericite, apatite, tr epidote, fluorite. Intrudes, has inclusions South Peacock pluton 350

169 153774 350 10' 15" 113 46' 03" PSPG Precambrian South Peacock pluton, med- grained porph. bio qtz monz with scattered coarse K-feldspar phxsts to 25 x 20 mm 350

170 153775 350 10' 26" 1130 46' 37" PSPG Precambrian South Peacock pluton, med- grained bio qtz monz, +/- 50% biotite, rare, lonely K-feldspar phxsts 320 Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

171 153776 350 10' 48" 1130 47' 08" PCBS Precambrian Blazing Star pluton--dike, alt'd argillized, coethite, hematite, porph 0 qtz rcnz, +/-N 45 W dike, 50 - 100 ft.(?) wide, minor biotite, contacts intruded by granite pegmatite dikes; bio qtz monz dike of South Peacock pluton lies to north; 2 pluton dikes and pegmatites intrude Pre- cambrian schists. 400

172 153777 350 11' 03" 1130 47' 14" PSPG Precambrian South Peacock pluton, moderately porphyritic, moderately foliated qtz monz, scattered white K-feldspar phxsts, about 10% fine biotite part alt'd to epidote, few milky qtz phxsts 380

173 153778 350 11' 03" 1130 47' 16" PCBS Precambrian Blazing Star pluton - dike?, 200ft(?)wide,north contact concealed by alluvium, deeply weathered strong goethite, abundant pink K-feldspar, cse porph qtz monz 500

174 153779 350 10' 57" 1130 47' 24" PCBS Precambrian Blazing Star pluton, cse porph granite, argillized, hematite veinlets after sulfides, goethite after FeC03 on fractures. 540

175 153780 350 11' 15" 1130 47' 42" PCBS Precambrian Blazing Star pluton, cse porph bio granite, biotite part alt'd to chlorite, goethite after pyrite vnlts 450

176 153781 350 11' 19" 1130 48' 01" PSPG Precambrian South Peacock pluton, cse porph bio-horn granite, abundant perthitic K-feldspar phxsts avg. 12 x 7 mm, max 37 x 24mm; abundant biotite phxsts 7 x 4 mm square books; rare distinctive blue-white milky quartz phxsts 3 - 4 mm. Thin Section: 20%qtz, Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

176 (continued) 48% microcline, 18% plag,3% biotite, 8% hornblende, 1% allanite, 0.5% sphene 0.5% apatite, 1% magnetite, rare fluorite on grain boundaries 40 0

177 153782 350 11' 47" 1130 47' 51" PCBS Precambrian Blazing Star pluton, cse porph bio granite, goethite stain, sparse fluorite deeply weathered 55 0

178 153783 350 11' 45" 1130 46' 52" PCBS Precambrian Blazing Star pluton, cse porph granite, contact zone with numerous zenoliths of pelitic schist and South Peacock pluton, weathered hematitic, rare fluorite 60 0

179 153784 350 11' 26" 1130 46' 30" PCBS Precambrian South Peacock pluton gray- pink foliated cse grained porph phase, with blue-white milky qtz phxsts to 5mm, grades into darker med grained bio granite above. Quartz monzonite, cse grained equigranular 27% qtz, 33% microcline; 30% plagioclase, 6% biotite, 2% magnetite, 0.5% epidote, 0,5% sphene, 0.5% apatite, trace allanite 38(0

180 153785 35 12' 33" 113 44' 41" PCBS Precambrian Blazing Star pluton cse (coarsest seen yet) porph biotite granite, biotite, rounded irregular clear qtz phenocrysts, deeply weathered 600

181 153786 35 12' 52" 1130 44' 51" PCBS Precambrian Blazing Star pluton, pink med- grained foliated porph granite, well-jointed, blocky, red hematitic weathering, minor +/- 3% biotite, much less than 180, prominent qtz phxsts, border phase near contact of Pre- cambrian dark gray schist 650 Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

182 153787 350 12' 28" 1130 46' 38" PCBS Precambrian Blazing Star pluton cse porph brown-pink granite, biotite part altered to hematite; one occurrence of yellow mineral might be autunite (?) 500

183 153788 350 13' 05" 1130 41' 21" PCBS Precambrian Blazing Star pluton pink- brown porph granite, minor biotite 500

184 153789 350 12' 41" 1130 41' 34" PCBS Precambrian Blazing Star pluton., pink- cse porph bio granite cuttings. Rocky Mt. Energy Co. location drill hole GF/42, 125 ft. Hermus 122-129, Nov.8, 1976 520

185 153790 350 12' 41" 1130 41' 32" PCBS Precambrian Blazing Star pluton, outcrop near previous drill sample. Gray- pink cse porph bio granite. Large equant microcline grains, some perthitic, and plag grains in a mosaic of interlocking qtz grains; some feldspars and biotites are sericitized; 35% qtz, 42% microcline, 18% plag, 1% bio, 3% sericite,l% magnetite, tr. leucoxene, apatite 560

186 153791 350 12' 36" 1130 41' 34" PCBS Precambrian Blazing Star pluton, pink cse porph granite cuttings, RMEC location drill hole GF/43, 105 ft. Hermus 142-149. Spectrometer, scint readings not representative of sample pile which is small 350

187 153792 350 12' 00" 1130 44' 00" PCBS Precambrian Blazing Star pluton, pink- brown cse porph granite. Prominent +/- N 700 W, 70 - 80 S joints 500 Mt. Sopris Site Sample Location Geologic Sci nt No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

188 153793 350 12' 48" 1130 43' 39" PCBS Precambrian Blazing Star pluton, light gray cse porph granite, minor hematite assoc. with biotite, minor hematite and goethite stain, angular glassy qtz phxsts common, sparse fluorite, lightly weathered, could be useful age date site. Thin section: granite with v coarse perthitic microcline 76%; small rectangular plag grains, clusters 7%; quartz 13%; 2% sericite (after feldspar, on crackle zones with tourmaline and hematite), 1% tourmaline, 0.5% hematite, 0.5% magnetite, tr sphene, zircon 650

189 153794 35016' 08" 1130 48' 15" PGN Precambrian quartz monzonite gneiss, not Valentine-type. White-pink med-grained about equigranular quartz and microcline. Gneiss is part of steeply dipping older migmatite terrain interbedded with granite pegmatite dikes and schists, intruded by Valentine pluton and a coarse-grained pluton presumed to be younger than the Valentine, central Peacock Mountains 175

190 153795 350 16' 28" 1130 45' 59" PVQM Precambrian Valentine pluton in central Peacock Mountains, leucocratic quartz monzonite gneiss, equant quartz 25% and microcline 29%, finer plagioclase 34%, sparse biotite largely alt'd to sericite 8%, kaolin 4%, tr hematite, leucoxene 250

191 153796 350 17' 33" 1130 47' 28" PMQM Precambrian Peacock Mountain biotite quartz monzonite gneiss, light gray cse porphyritic, separated from the Valentine-type intrusion by meta-sed-volc screens and is believed to be younger than the 1740 m.y. Valentine. Thin section: 19% quartz, 25% microcline, M .Sonris Site Sample Location Geologic cPnS No. No. Latitude Longitude Unit Code Suggested name, description, cnmmPnts., CPS

191 (continued) 37% plagioclase, 14% biotite, 2% hornblende, 1% sphene,0.5% magnetite, 0.5% apatite. tr epidote. 0.5% sericite, tr nearly fresh allanite 130

192 153797 350 24' 21" 1130 48' 10" PCAN Precambrian Antares I pluton cse porph bio qtz monz cuttings, USGS Peacock Mountains Heat Flow Hole, includes some Precambrian granite pegmatite cuttings 170

193 153798 350 24' 23" 1130 48' 10" PANT Precambrian Antares II (1400 m.y.?) pluton, small plug intrudes, protrudes through coarse pink granite pegmatite near Heat Flow Hole. Coarsely porphyritic crowded K-feldspar phxsts in gray biotite quartz monzonite, with inclusions of Antares I biotite qtz monzonite 215

194 153799 350 23' 30" 1130 47' 17" LQVN Laramide (?) Cretaceous o Tertiary vein zone, N 250 W dip 45 S, with N 600 W, 300 S fracture system, six or more 1 inch to 4 inch wide quartz-goethite veins in goethite-rich gouge-fracture zone 10-12 ft. wide. Hanging wall contains an altered porphyry dike of Cretaceous or Tertiary age and footwall is Precambrian biotite granodiorite gneiss. Count is about 2x background 250

195 153800 350 23' 18" 1130 47' 10" GDGN Precambrian biotite granodiorite gneiss, thought to be older terrain intruded by Valentine pluton; fresh rock on mine dump. Thin section: granodiorite gneiss of uncertain origin, interlocking 27% quartz, 20% microcline, 42% plagioclase; small flakes aligned biotite 7%; 2% sericite in feldspars along numerous tiny fractures; 1% magnetite, Mt. Sopris Site Sample Location Geologic Sc int No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

195 (continued) tr apatite, leucoxene after sphene, hematite after biotite and magnetite 175

196 153801 350 21' 41" 1130 46' 19" GD GN Precambrian biotite granodiorite gneiss, not the Valentine pluton, presumed to be older terrain, taken near the northwest shaft of the North Hackberry mine. Hackberry fault-vein strikes NW dips 550 S at shaft. Rare secondary uranium oxides were noted on a hematitic, slicken- sided face of a boulder out of the fault zone, max 750 cps, was not sampled. Non- anomalous biotite granodiorite gneiss in footwall of Hackberry fault was sampled. Thin section: 20% qtz., 15% microcline, 49% plagioclase, 10% biotite, 2% sericite and 1% calcite in plagioclase cores, also hairline fractures 150

197 153802 340 55'53" 1130 47' 40" LGDP Laramide granodiorite porphyry dike, gray, fine to medium grained, 200 ft. wide, strikes N 250 W, Hibernia Peak 7 Quad- rangle. Well developed plagioclase phxsts, few orthoclase subhedra, round B quartz eyes and biotite books crowded in a granophyric matrix of quartz and both feldspars. Sausserite clouds some plagioclase xls, biotite largely alt'd to pennine with blobs Fe-rich epidote - ascribed to deuteric alteration 110

198 153803 340 56' 05" 1130 49' 23" PCGN Precambrian diorite ? gneiss, strongly sheared, schistose, below a N 400 E granite gneiss dike, shows 300-400 cps anomaly over 100 ft. Chip sample across 1 foot exposed in road cut 2000 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

199- 153805 - Are water samples W-14 through W-17 202 153807 (See Water Samples List).

Samples 203 - 279 Cerbat Mountains samples: Wallapai Mining District.

203 153808 350 19' 10" 1140 06' 50" LVN (NOTE: LVN is reserved for veins sampled in the Cerbat Mountains). Laramide vein north of De La Fontaine shaft, N 640 W, 650 N, 84 inch wide quartz, goethite, manganese oxide vein, sampled black goethite-MnO rich 1 ft. by 6 inch ore shoot after sulfides in vein 2 ft. above hanging wall, +20,000 cps above a 175 cps background. Vein near shaft is 500-7000 cps 20,000+

204 153809 350 19' 10" 1140 06' 50" LVN Laramide vein De La Fontaine waste dump, quartz, bleached wall rock, limonite, minor galena, lead and silver oxide minerals, Precambrian granite gneiss wall rock. No dikes seen near sample site 2150

205 153810 350 17' 43" 1140 07' 12" LVN Laramide vein, quartz, galena, chalcopyrite, pyrite ore, Summit mine dump, lead, copper silver ore. AEC PRR reports anomalous radioactivity at the summit, probably another vein that we did not examine 120

206 153811 350 20' 25" 1140 07' 54" PCMV Precambrian meta-volcanic, black-brownish green, shear zone 2 - 4 ft. wide at least 50 ft. long, 1 - 2 inch dull gray quartz veinlets, black and brown resinous-looking crystals, in broken sheared schist with heavy chlorite and epidote alteration. Count is 400 - 3,000 csp. Radioactivity Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

206 (continued) has nothing to do with nearby dacite dike, (Bronco Dike) which is not anomalous. Fragments of silicified former granophyre with scattered B quartz grains are set in a shaved matrix of coarse quartz and epidote. Epidote is intergrown with or zones to partly metamicit allanite. Accessories include apatite prisms, sphene, minor zircon and rare sericite. This occurrence. may be the radioactive "basic dike" near the Jamison mine described by AEC PRR 2,500

207 1.53812 350 20' 27" 1140 07' 58" LDD Laramide dacite dike, Bronco dike, N-N 10 0 E, dip 55-60 W, 200 feet wide, light yellow gray altered felsite porphyry with scattered plagioclase, rare biotite and quartz phenc- crysts. Similar dikes cut the Laramide Ithaca Peak stock and appear to have preceded the veins of the Wallapai district. A plagioclase-quartz porphyry has been alt'd to a quartz sericite rock with minor leucoxene, tr jarosite after tiny pyrite rods, trace zircon and minor kaolin 40

208 153813 350 20' 23" 1140 08' 04" GDGN Granodiorite gneiss of southern Cerbat range, part of the Cerbat complex, an important large pluton presumed to be older than the 1400 m.y. and possibly the 1700 m.y. granites; could be the "meta-diorite "at the Duval Ithaca Peak mine. Gray medium-grained hornblende-biotite granodiorite gneiss. Accessories are magnetite, epidote (after hornblende),sphene, apatite, allanite, tr zirconium, tr. goethite after pyrite. 1 20 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

209 153814 350 19' 40" 1140 09' 41" LIPT Duval Ithaca Peak mine mill tailings, alt'd mineralized Ithaca Peak quartz monzonite and Precambrian rocks 102

210 153815 350 22' 16" 1140 09' 39" LIP Laramide Ithaca Peak quartz monzonite, finegrained, argillized, pyritic, goethite, jarosite after pyrite, Thin section study suggests a quartz latite vitrophyre, possibly a welded tuff 160

211 153816 350 21' 55" 1140 08' 18" LIP Laramide Ithaca Peak quartz monzonite ore, 4110 Bench Ithaca Pit, Duval Mine. Biotite quartz monzonite porphyry, quartz, orthoclase, plagioclase, biotite rock with pyrite, tr barite, secondary orthoclase, coarse muscovite-quartz gneisen zones; plagioclase is moderately sericitized, biotite is fresh. Accessory apatite, sphene, tr. zircon 128

212 153817 350 21' 55" 1140 08' 18" LIP Laramide Ithaca Peak quartz monzonite ore, "quartz porphyry " phase, 4110 bench, Ithaca pit, Duval mine. Light gray quartz porphyry clay-sericite alt'n, pyrite, chalcocite, molybdenite 170

213 153818 350 21' 35" 1140 09' 04" LDD Laramide daci~te dike, 4525 Bench, Gross Perimeter pit, Duval mine, quartz-sericite- pyrite altered dacite dike with molybdenite, 38% quartz, 39% plagioclase, 21% sericite, 2% pyrite 170

214 153819 350 21' 35" 1140 09' 04" PGNA Precambrian quartz-feldspar gneiss, phyllic altered, pyritic, 4525 Bench Gross Perimeter pit, Duval mine 225 Mt.Sopris Site Sample Location Geologic Sci nt No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

215 153820 350 21' 34" 1140 09' 03" LIBD Laramide mineralized breccia dike, 3 ft. wide, N 50 0 W, +/- 90 , cuts Precambrian gneiss, 4390 Bench Gross Perimeter, Duval mine 230

216 153821 350 21' 32" 1140 09' 02" PCMD Precambrian metadiorite, phyllic altered, 4355 Bench, Gross Perimeter, Duval mine 140

217 153822 350 21' 45" 1140 08' 57" LIP Laramide Ithaca Peak quartz monzonite, phyllic altered, pyrite mineralized, intrudes Precambrian dark gray schist and meta-diorite, 4320 level Gross Pit, Duval mine 140

218 153823 350 21' 48" 1140 08' 57" PCSC Precambrian black amphibolite schist roof pendant in Precambrian meta-diorite, 4320 level Gross Pit, Duval mine 110

219 153824 350 21' 56" 1140 08' 06" LIP Laramide Ithaca Peak quartz monzonite, phyllic alt'd, goethitic, outcrop east of Duval mine 130

220 153825 350 22' 16" 1140 09' 13" PGNA Precambrian altered gneiss, former quartz monzonite with minor biotite, strong argillic alteration zone with sericite mapped by Dings (1951) as "Mesozoic Ithaca Peak granite". About equigranular medium grained quartz 30%, fresh mirocline 32%, plagioclase and biotite altered to kaolin 25% with 4% earthy goethite, 1% leucoxene, 5% sericite in plagioclase relics, tr zircon 180

221 153826 350 20' 22" 1140 08' 39" LVN Laramide vein material from waste dump New York tunnel, Detroit group Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

222 153827 350 20' 15" 1140 08' 36" LVN Laramide vein material from anomalous waste dump Hudson tunnel, Detroit Group. Vein above in N 50 W, shear-veinlet zone 10 ft. wide

223 153828 350 20' 10" 1140 08' 47" PGNA Precambrian quartz feldspar gneiss, N 500 E foliation, argillized, sericitized in Laramide time, hematite, goethite after sulfides, quartz veinlets, mapped as Meso- zoic Ithaca Peak granite by Dings (1951) 105

224 153829 350 20' 12" 1140 08' 37" LVN Laramide vein, top of Hudson vein, quartz- Jimonite vein, NW dip 800 W. 3 ft. wide, 600 - 800 cps, cuts Precambrian gneiss and schist, sample 1 ft. across vein 700

225 153830 350 20' 00" 1140 08' 30" LVN Laramide vein, sample waste dump Golden Eagle shaft, altered wall rock, quartz, limonite, clay, pyrite 150

226 153831 350 19' 58" 1140 08' 33" PGNA Precambrian gneiss altered, mineralized in Laramide time, bleached leached, argillized, limonitic zone, minor pegmatite veinlets, mapped by Dings (1951) as Meso- zoic Ithaca Peak granite. 200

227 153832 350 19' 57" 1140 08' 27" LDD Laramide dacite dike, altered yellow-white felsite exposed at mouth of adit S 30 0 E of Golden Eagle; radioactive black veinlets on fractures cutting felsite (400-700 cps) 700

228 153833 350 20' 02" 1140 08' 22" LVN Laramide vein material from Bobtail shaft dump 500 - 2500 cps, vein breccia 5-6 ft. wide, N 100 E +/- 90 , Precambrian gneiss on west wall, amphibolite schist on east wall 2500 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. cP S

229 153834 350 20' 29" 1140 08' 33" LDD Laramide dacite dike, Great White Dike, "Chicoville" canyon, yellow white altered felsite dike. 145

230 153835 350 19' 40" 1140 08' 33" L VN Laramide vein, mill tailings at mouth of Todd. Basin canyon, large red brown anomalous south lobe of tailings. 550

231 153836 350 19' 41" 1140 08' 28" GDGN Precambrian granodiorite gneiss, gray, fine-grained, unweathered rock on waste dump Todd Canyon lower tunnel. 225

232 153837 350 19' 41" 1140 08' 28" LVN Laramide vein material, quartz-pyrite- galena, Todd Canyon lower tunnel dump. 140

233 153838 350 19' 40" 1140 08' 33" LVN Laramide vein material, Todd Basin mill screened jig tails. 570

234 153839 350 19' 34" 1140 07' 58" LVN Laramide vein, upper Todd Basin tunnel dump, vein strikes N 520 W, dip 650 N Oro Plata (?) mine 375

235 153840 350 19' 34" 1140 07' 58" LVN Laramide vein, upper Todd Basin dump, Oro Plata (?) mine, radioactive dark gray screen ore pile. 2500

236 153841 350 19' 27" 1140 07' 21" LVN Laramide vein, Golconda mine, east dump radioactive dark gray vein material near former assay office out of main incline shaft, adds another uranium bearing vein in the Cerbats, not previously known to AEC. 600-800

237 153842 350 19' 24" 1140 07' 42" LVN Laramide vein, Golconda mill upper dum8 4730 elevation, black-brown fines S 25'W of shaft, screened or reworked material 600-900 Mt.Sopris Site Sample Location Geologic Sci nt No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

238 153843 350 19' 23" 1140 07' 47" PGNA Precambrian granodiorite (?) gneiss, Laramide phyllic-argillic alteration zone mapped as "Mesozoic Ithaca Peak granite" by Dings 1951,, foliae N 35 0 E, dip 35 NW 200

239 153844 350 19' 27" 1140 07' 50" GDGN Precambrian granodiorite gneiss, fresh, unweathered, Golconda lower Tunnel dump 250

240 153845 350 19' 24" 1140 08' 10" LVN Laramide vein material, waste dump of Mexican tunnel, alt'd wall rock, quartz, pyrite, goethite, clay. 200

241 153846 350 18' 51" 1140 09' 26" LVN Laramide quartz breccia-goethite-hematite vein in trench 100 ft. north of shaft in alt'd precambrian granodiorite (?) gneiss, N 100 W, dip 65-73 E, could be Midday mine or J.C. - Fort Lee group, now called Norma Jeanne 1 claim 1,000

242 153847 350 18' 13" 1140 08' 10" LVN Laramide vein, Golden Gem, anomalous red mill tails 225-1,000 cps, average 300 1,000

243 153848 350 18' 14" 1140 08' 07" LVN Laramide vein, Golden Gem dump, selected grab sample, quartz, copper, lead, silver ore, dump averages 350 cps 350

244 153849 350 18' 18" 1140 08' 11" LVN Laramide vein, Idaho mine dump, 250-350 cps, select grab sample, quartz-pyrite-goethite- sphalerite-chalcopyrite, gangue. 300

245 153850 350 18' 42" 1140 07' 42" PCDB Precambrian diabase "Mig" of Dings (1951) 62

246 153851 350 18' 43" 1140 07' 43" LDD Laramide dacite dike, N30 W, 20 ft. wide, light gray altered felsite 140 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

247 153852 350 18' 49" 1140 07' 55" LVN Laramide vein material from dump Cerbat (Au-Cu-Zn) mine, goethite clay gouge, vein material 1,000

248 153853 350 18' 50" 1140 07' 57" LVN Laramide vein, Cerbat mine vein, hanging wall. is N 50-63 W, dip 750 W fault with 500-1,000 cps in goethite, oxidized ore0 shoot dips 700 E. Sample a N 800 W, 62 E quartz-gouge-breccia vein with goethite, clay gouge, quartz breccia, malachite, tenorite, copper pitch. Vertical to 30 E fractures localize copper oxides and rad anomalies, max. 6000 cps in red brown hematite gouge; uranium minerals not seen. 6,000

249 153854 350 18' 36" 1140 07' 00" LVN Laramide vein, Jim Kane mine, quartz-iron carbonate vein 125 - 200 cps with local steel galena, lower adit caved at 300 ft., ranges from 300-1,000 cps, sample small pile quartz-clay-iron carbonate-gouge material 800

250 153855 350 18' 19" 1140 07' 29" LVN Laramide vein, St. Louis mine, vein strikes N 57 0 W, dips 70 0 N, sample waste dump 200

251 153856 350 18' 27" 1140 05' 31" PCGN Precambrian granodiorite gneiss, fresh well cuttings. Dinsmore Ranch, Treasure Hill area 150

252 153857 350 18' 26" 1140 05' 40" PGNA Precambrian leucocratic gneiss, altered, pyritized, with minor brecciation, during the Laramide, mapped by Dings, 1951 as Meso- zoic Ithaca Peak granite, a qtz monz gneiss formerly with about equal amounts of qtz, microcline and plagioclase, with minor biotite, Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

252 (continued) plagioclase and biotite being altered to sericite (3% remains) then strongly kaolinized (38% kaolin), 4% goethite after pyrite, and staining biotite and microcline, tr garnet, leucoxene, MnO staining. Foliae strike NE, dip +/- 900 15( 0

253 153858 350 18' 24" 1140 06' 03" QMGN Precambrian qtz monz gneiss sills, gray cse porph sills intrude Precambrian gneisses of Cerbat complex. 1:50

254 153859 350 18' 23" 1140 06' 26' LVN Laramide vein material, Western Union south shaft - hand sorted quartz, oxide "ore" pile on dump. Minor galena, abundant goethi te 17 5

255 153860 350 18' 23" 1140 06' 28" PGNA Precambrian altered leuocratic gneiss, S 75 W of Western Union shaft, sericite- clay alt'n with goethite, iron-manganese oxides, mapped by Dings, 1951, as"Mesozoic Ithaca Peak granite" 15(0

256 153861 350 18' 27" 1140 06' 27" PGNA Altered Precambrian gneiss S 60 0 E of Western Union adit. Quartz limonite veinlets after sulfide show count to 250 cps in a fracture zone striking N 50 0 W and dipping 0 60-65 N . 20(0

257 153862 350 18' 27" 1140 06' 27" LDD Light green gray altered dacite dike roughly 10 ft. thick in PGNA with veinlets brown limonite after carbonate, manganese oxide and goethite after minor sulfides, close to north edge of strong alteration. Any uranium present is in sulfide veinlets or former sulfide veinlets. The dacite is not anomalous 280 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

258 153863 350 18' 57" 1140 05' 57" PGNA Altered Precambrian leucocratic gneiss in 150 ft. wide altered zone in hanging wall of N 67 0 W,dip 600 N vein; clay and FeMnO with goethite and jarosite after pyrite 2 75

259 153864 350 19' 00" 1140 06' 18" LVN Laramide vein material, yellow limonite, pyritic quartz vein and wall rock. Banner mine, south adit (?) dump near shaft mostly went 300-400 cps but some went 800 cps. Shaft dump material went 150-300 cps and was not sampled 1 ,000

260 153865 350 19' 03" 1140 06' 17" LVNM Laramide vein-mill.Banner mine mill heads showing visible lead, zinc and copper mineralization with pyrite and quartz. Host rock is a gray granite pegmatite which counts 150 cps. One vein boulder from mill dump counted 1200 cps 250

261 153866 350 19' 06" 1140 06' 08" LVNT Laramide vein tailings. Banner mine-mill tailings. Sampled bottom 4 ft. (older) tails, yellow white in color and rich in Vein quartz, counted from 800 to 1,000 cps. Over- lying younger yellow-orange tailings counted from 200 to 1,000 cps but averaged 400 cps 1,000

262 153867 350 19' 01" 1140 05' 52" LVNM Laramide vein-mill. Mill heads from Cupel mine consisting of yellow gray clay spillage fines and bin low grade. Not much visible higrade. Old stopes near surface were opened by dozer work. Shaft dump count 150-200 cps, nothing anomalous. Surface vein source, if exposed, is unknown. The three or four veins seen counted 275 275 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

263 153868 350 19' 01" 1140 05' 52" LVNT Laramide vein-tailings. Mill tails from Cupel mine. Older yellow material counts 200 cps. Younger gray material on top went 700 cps and this was the material sampled 700

264 153869 350 19' 00" 1140 06' 00" LVNM Laramide vein-mill. Cupel mine yellow fines from the bottom of three old broken "condit- ioning" (?) tanks above old Cupel mill. Count varied from 1,000 to 1,600 cps 1,600

265 153870 350 21' 57" 1140 11' 26" TEIC Tertiary Emerald Isle conglomerate. Emerald Isle mine yellow brown tailings 100

266 153871 350 21' 46" 1140 11' 25" TEIC Tertiary Emerald Isle conglomerate. Emerald Isle open pit mine ore - chrysocolla and tenorite (melaconite) in Tertiary conglomerate. Precambrian gneiss is exposed in the pit with amphibolite, and 5 inch to 3 ft. pegmatite stringers 140

267 153872 350 21' 47" 1140 11' 26" PCGN Precambrian gneiss north side, Emerald Isle open pit wall, bedrock showing goethite mineralized shear zone with fracture sets striking N 400 W, dip 72 0 N, also N 800E and 660 N 100

268 153873 350 21' 26" 1140 10' 46" PGNA Light gray altered Precambrian gneiss, cut by pegmatites, some with garnet. Mapped by Dings as "Mesozoic Ithaca Peak granite" 115

269 153874 350 24' 02" 1140 13' 47" PCDG Fresh, unweathered Precambrian Diana granite (B.E. Thomas, 1949, 1953) from dump of most recent of two shafts located in eastern part of the SW4 of Sec. 5, T23N, Rl8W near Chloride. Foliated dark gray cse porph biotite quartz monzonite. Vein quartz ,oxidized vein material Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

269 (continued) on dump counted 120 cps. A nearby pit, stope or near surface caved adit, exposes a normal fault striking NW and dipping 800 E, with hematite, goethite, clay gouge which counts 200-250 cps. 145

270 153875 350 24' 02" 1140 13' 47" LVN Laramide vein. Vein material on shaft dump, mineralized with quartz, pyrite and goethite, dark whitish gray color. 1 20

271 153876 350 24' 55" 1140 13' 28" PCDP A dark gray foliated, diorite porphyry intrudes Diana granite. This .dike strikes apx N 85 0 W. Age uncertain; could be Cretaceous, but foliation suggests it is Precambrian 250

272 153877 350 25' 03" 1140 13' 30" LVN Laramide vein. Arizona Magma (Diana) mine, surface coarse reject (?) or spillage (?), quartz, manganese oxide, definite low grade cse breccia vein material from vein cutting Diana granite 90

273 153878 350 25' 00" 1140 13' 38" LVNT Laramide vein tailings. Arizona Magma (Diana) mine tailings, light grayish or yellow brown in color 60

274 153879 350 25' 04" 1140 13' 43" PCDG Precambrian D.iana granite. Dark gray coarsely porphyritic biotite hornblende qtz monzonite gneiss. Coarse, partly oriented K-feldspar phxsts did not appear in thin section which shows 8% hornblende and metamict mineral traces in the biotite. 20

275 153880 350 25' 23" 1140 13' 06" PCGN Precambrian gneiss. Light pinkish gray, a leucocratic bleached pegmatitic gneiss with minor goethite after disseminated and veinlet pyrite.Could be a large roof pendant in Diana granite 200 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

276 153881 350 25' 46" 1140 13' 05" PCDG Dark blackish gray Precambrian Diana granite, gneiss near contact with older Chloride granite, strongly foliated N 17 0 E dipping 850 N. Microcline phenocrysts are oriented, stretched and distorted with abundant (15%) f.g. biotite in anastomosing seams flowing around more or less oval grains of quartz (26%), microcline (16%, more is present in hand specimens) and plagioclase (42%). Composition is biotite quartz monzonite with minor apatite and tr hornblende and zircon. Rock shows no post- metamorphic alteration 150

277 153882 350 25' 00" 1140 11' 34" PCCG Precambrian Chloride granite (Dings, 1951), medium whitish gray, medium grained porphyritic biotite quartz monzonite gneiss, with equant microcline (25%) and plagioclase (30%), quartz grain lenses (37%), 5% biotite books in part oriented, 1% sericite, 1% goethite, 0.5% epidote 225

278 153883 350 25' 28" 1140 11' 39" PCCG Precambrian Chloride granite, medium greenish gray, site at the Chloride community water tank. Medium-grained porph biotite quartz monzonite gneiss, tr zirconium, apatite, minor sericite after plagioclase 220

279 153884 35 25' 05" 1140 11' 46" PCCG Chloride granite, north of town, medium brownish gray in color 200

280 153885 350 22' 32" 1130 44' 18" PVQM Precambrian Valentine quartz monzonite gneiss, fine to medium grained, foliated, medium gray 110 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

281 153886 350 21' 07" 1130 46' 05" LQVN Laramide (?) vein-fault. Sunshine mine waste dump quartz limonitic vein material and altered Valentine quartz monzonite. Mill heads count to 160 cps, and tails are similar to waste dump. Shaft dump south of Sunshine mine at 4640 elevation, gave count of 150 to 200 cps. Low angle amphibolite sill 10 ft. thick cuts the Valentine quartz monzonite. Sunshine mine incline shafts are on a fault zone that strikes N 50W dips 16 0W. Thick gray gouge on footwall runs 100-200 cps (Mt.Sopris) anomalous fracture in fault is 400 cps; dried slimes in incline max 500 cps 140

282 153887 350 20' 59" 1130 45' 57" LQVN Laramide (?) vein-fault. Hackberry mine incline shaft waste dump, located S 700 E of spring tanks, averages 200 cps, 400 cps max. Material consists mainly of gray altered Valentine quartz monzonite and quartz with maroon hematite veinlets 400

283 153888 350 21' 01 1130 45' 59" LQVN Laramide (?) vein-fault. Hackberry fault, altered gray-orange limonite zone striking N 43 0 W and dipping 270 SW 850

284 153889 350 21' 02" 1130 45' 59" PVQM Precambrian Valentine quartz monzonite. Old Hackberry adit (shaft filled in) material showing orange-yellow limonite on fractures and weak argillic alteration. Radioactivity, probably U308, is definitely confined to short, narrow mineralized fractures along the Hackberry vault, does not extend to wall rock 100 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

285 153890 350 19' 45" 1130 45' 50" PVQM Small pinnacle N 62 0 W of Trap Spring, foliated Valentine biotite quartz monzonite. Foliation strikes N 42-470 E and dips 700 - 90 SW. Jointing is prominent. One set strikes N 65 0 W and dips 68--700S. Another set strikes N17 0 W and dips near vertical. Thin section indicates 1% magnetite, 1% sericite, 0.5% leucoxene, tr apatite 125

286 153891 350 18' 00" 1130 45' 18" PVQM Brownish gray Valentine quartz monzonite with some weathering 120

287 153892 350 16' 53" 1130 45' 09" PVQM Valentine pluton, quartz monzonite, greenish gray taken from just below Upper Freirichs Well

288 153893 340 48' 07" 1140 Ol' 51" PCGN Fine grained quartz hornblende garnet gneiss intruded by light gray pegmatite stringers 195

289 153894 340 45' 29" 1130 59' 15" PGGN Gray cse porphyritic gneiss biotite quartz monzonite, one of numerous coarser units intercalated with fine grained gneisses like No. 288. Tentatively correlated with granite gneiss of Neal Hill, No. 16. 40% crowded equigranular gray microcline phenocrysts oriented N 67 0 E and vertical parallel to foliation. Strings of biotite books (9%) show pleochroic haloes around accessory minerals which include 0.5% zircon tr apatite, monazite and xenotime.Near the the biotite is sericite (9%) alteration of feldspars, esp. plagioclase. 650 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

290 153895 340 44' 28" 1130 57' 46" PGGN Gray porphyritic granite gneiss of Neal Hill with N 25-50 E foliation dipping 76 0 N and granite pegmatite dike 6 inches thick which strikes N 800 E and dips 80 0 N. The rock is also intruded by a dark gray cse porph biotite quartz monzonite dike (225 cps) that is 100 ft. wide and strikes N 4 0 Eand resembles the Burch Peak pluton 275

291 153896 340 44' 48" 1130 56' 52" PCDF Dutch Flat medium gray porphyritic quartz monzonite pluton taken at location Drill Hole RS 78-1 of Embarcadero Corp. EMB claims. No drill cuttings remain. Minor disseminated fluorite is common 8 00

292 153897 340 39' 55" 1130 53' 14" PCDF Medium gray Dutch Flat quartz monzonite porphyry. 25% K-feldspar phenocrysts average 20 x 6mm , crowded, oriented in all directions. Rare dissemination of fluorite noted 600

293 153898 340 36' 57" 1130 49' 20" PCGN Medium grained, pinkish gray gneiss dike striking N 350E and dipping 550SE cuts dark gray porphyritic quartz monzonite gneiss and fine grained mica gneiss-almost- schist-cut b.y granite pegmatite stringers 350

294 153899 340 35' 36" 1130 47' 52" PCSW Stouts Well granite pluton medium grained cse porph dk gray biotite granite, with bio books to 10mm. Qtz 22%, cse ragged microcline grains 42%, 18% plagioclase grains, 14% thick biotite books with abundant 2% sphene also 1% apatite and magnetite 350

NWA 295-311 153900-153916 are water samples W-18 through W-34 (See Water Samples List). Mt.SopriS Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description,comments. CP S

312 153917 350 24' 55" 1130 48' 41" PCAN Antares I pluton consisting of gray coarsely porphyritic biotite quartz monzonite 240

313 153918 350 24' 32" 1130 49' 11" PCAN Antares I pluton same as above with N62 0 E foliation dipping +/- 85 0 N 215

314 153919 350 23' 49" 1130 48' 52" PANT Antares II pluton, medium gray biotite quartz monzonite mega porphyry of Phillip Anderson, with large and numerous potash feldspar phenocrysts up to 70 x 40mm in size. Intruded by rhyolite (?) porphyry dike of Laramide or Tertiary age which strikes N 43 W, also Precambrian diabase sheets 18 0

315 153920 350 23' 25" 1130 48' 26" PANT Light pinkish gray Antares II, quartz monzonite porphyry pluton. Fresh sample from mine dump could be age dated. Shaft cuts are on 8 1 - 2' quartz vein which strikes N 32 E, dips 60 W in pink altered Antares II porphyry 200

316 153921 350 22' 22" 1130 47' 28" PCPG Pink to greenish brown granite pegmatite dike, 4' wide, strikes N 700E, is most radioactive (1000-12000 cps) where it cuts a fold in the Precambrian schist. Is 1,000 near BFEC sample MGC-19, 28 ppm cU

317 153922 350 22' 39" 1130 47' 53" PVQM Valentine quartz monzonite porphyry gneiss, light orange-brown,- medium grained 105

318 153923 350 22' 12" 1130 48' 38" PANT Pinkish, coarsely porphyritic altered biotite quartz monzonite of Antares II pluton 150 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

319 153924 350 21' 07" 1130 47' 37" PVQM Valentine quartz monzonite porphyry altered with clay, goethite, limonite and cut by potash feldspar - quartz pegmatite stringers 150

320 153925 35 08' 52" 114 06' 07" PCHM Holy Moses porphyritic biotite 0 quartz monzonite with 50 x 60mm, N 55 E oriented, light gray K-feldspar phenocrysts and 20% coarse biotite 150

321 153926 35 09' 17" 1140 06' 42" PCHM Holy Moses pluton. Near BLM AMC 4030' elevation, freshest Holy Moses granite from dump of oldest (?) shaft. Brownish gray cse porph biotite quartz monzonite 150

322 153927 350 09' 52" 1140 07' 10" PCGN Older Precambrian gneiss complex rocks from dump of lowest adit. Leucogranite cut by medium grained dark gray porphyritic quartz monzonite and granite pegmatite dikes. Nearby Laramide or Tertiary gray porphyry dike was not sampled 150

323 153928 350 09' 45" 1140 05' 19" PCLG Light gray, medium grained, porphyritic leucogranite, 2% biotite and abundant equigranular 5x5mm phenocrysts and rare large ones of 150x100mm maximum size. This rock is in contact with the Holy Moses pluton. Could be its outer shell or another pluton; covers a fairly large area 235

324 153929 350 04' 36" 1140 06' 33" PCGN Medium gray Precambrian gneiss not far from the Santa Fe RR crossing. Quartz Monzonite porphyry gneiss with finer grained meta- sedimentary (?) layers; older terrain intruded by the Holy Moses pluton, 350 cps maximum 300 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments.. CPS

325 153930 350 06' 27" 1130 55' 36" PCHP Pink to light greenish brown Hualapai Peak quartz monzonite, coarsely porphyritic with minor red hematite. Taken in Cottonwood Canyon below Whiskey Spring 430

326 153931 350 02' 14" 1130 58' 26" PCWB Whiskey Basin pluton, a light brownish gray, fine grained well foliated quartz monzonite with 3% fine grained biotite phenocrysts, oriented to foliation 200

327 153932 350 00' 42" 1130 58' 23" PCWB Light brownish gray Whisked Basin pluton, foliated N 50E, dipping 70 W 200

328 153933 350 00'08" 1130 57' 52" PCWP Cavalliere-Wabayuma Peak pluton a light brownish gray, fine grained quartz monzonite, like Whiskey Basin but separated by a schist screen and has more quartz. No biotite noted. Foliation strikes N 60 0 E and dips 85 0 N 220

329 153934 340 59' 19" 1130 58' 49" PCWP Cavalliere-Wabayuma Peak pluton with 20% biotite. Again similar to Whiskey Basin pluton, Outcrop is bouldery, contains more biotite and is darker than the previous sample 185

330 153935 340 56' 21" 1140 05' 29" PCWC Willow Creek- pluton, medium gray, mostly fine grained porphyritic biotite quartz monzonite porphyry, narrow lOx3mm potash feldspar phenocrysts common partly oriented but not abundantly so. Local coarser and medium grained segregations. Rare purple amethyst or fluorite (?). Probable +/- 1400 m.y. pluton 650 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

331 153936 340 58' 31" 1140 04' 25" PCSC Medium gray, quartz-feldspar-muscovite- biotite schist with white quartz-muscovite-biotite gneiss stretched pebbles sized from 8xlOmm to 40xl5mm. Foliae N 27 E, dip 90 - 50 0 W 400

332 153937 340 58' 00" 1140 03' 44" WBQM Whiskey Basin North Pluton light whitish gray quartz monzonite. Northwest contact conforms to Precambrian schist. Fine-grained gray goethitic biotite quartz monzonite gneiss strong foliation strikes N 30E, dip 66 W 380

333 153938 340 57' 10" 1140 03' 10" PCWC Willow Creek pluton, medium gray biotite quartz monzonite. Weak foliation striking N 55 0 E. No potash feldspar phenocrysts 640

334 153939 340 58' 44" 1140 00' 43" PCWB Whiskey Basin pluton, whitish gray, medium grained biotite quartz monzonite, less foliated than previous Whiskey Basin samples. Abundant smeared biotite books up to l0x5mm in size. Rock is cut by a few pegmatite stringers of similar composition 250

335 153940 340 57' 28" 114 02' 03" PCWB Whiskey Basin pluton, light brownish gray, medium gray quartz monzonite gneiss, with smeared biotite books and N 70 0 E to E vertical dipping foliation 230

336 153941 340 56' 55" 1140 01' 13" PCWP Medium grayish brown Cavalliere-Wabayuma Peak pluton, fine grained biotite quartz monzonite gneiss, strongly jointed and with foliation dipping 73 0 W and striking N230 E. From a distance the PCWP appears to be a huge "sill" intruding and conformable to Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

336 (continued) overlying amphibolite schist and meta- sedimentary gneiss and the Whiskey Basin and North Whiskey Basin plutons appear to be similar, smaller sill-like bodies. 340

337 153942 340 56' 23" 1140 03' 50" PCWC Medium gray, Willow Creek pluton contact zone one of 4 or more dikes which strike N 46 E and dip 75 0 NW in meta-sedimentary gneiss 250

338 153943 340 55' 10" 1140 05' 42" PCWC Willow Creek pluton. Fine grained gray non porphyritic quartz monzonite with minor porphyritic phases 350

339 153944 340 54' 06" 1140 05' 00" PCWC Willow Creek pluton. Fine grained gray non porphyritic, equigranular biotite quartz monzonite. Local gneisses of similar composition were not sampled 300

340 153945 340 54' 27" 1140 04' 14" PCWP Wabayuma Peak-Cavalliere pluton, light brownish gray, biotite quartz monzonite gneiss, foliae strike N 70o, dip 70 0 N, joints strike NW, dip +/- 90 150

341 153946 340 55' 15" 1140 04' 12" PCWC Willow Creek pluton. Light gray, fine grained, gneissic, non-porphyritic biotite quartz monzonite 300

342 153947 340 55' 15" 1140 03' 48" PCWP Cavalliere-Wabayuma Peak pluton, light gray silicified, fine to medium grained, biotite quartz monzonite gneiss, strongly foliated. Contact of gneiss and PCWP in NW4 Sec. 27, T 18 N, 17W strikes N 340E, dips 80 0W 150 Mt.Sopris Site Sample Location Geologic Sci nt No. No. Latitude Longitude Unit Code Suggested name, description, comments. CP S

343 153948 340 54' 18" 1140 02' 01" PCWP Cavalliere-Wabayuma Peak pluton, medium gray, N 38 0E foliation, dipping southeast. Sample is leached and bleached fine to medium grained biotite quartz monzonite gneiss 145

344 153949 340 54' 21" 1140 00' 17" PCWP Cavalliere-Wabayuma Peak pluton, medium gray, fine grained biotite quartz monzonite porphyry, weak foliation 115

345 153950 340 53' 15" 1140 03' 18" PCWP Cavalliere-Wabayuma Peak pluton, medium gray, medium grained, biotite quartz monzonite. Local phases show hornblende crystals 320

346 153951 340 52' 24" 1130 59' 07" PCWP Medium grained, border phase, of Wabayuma Peak-Cavalliere batholith. Light gray biotite quartz monzonite 155

347 153952 340 52' 58" 1130 58' 05" PCMS Antler mine massive sulfide vein, sampled four feet across three foot vein width at surface exposure next to main shaft. Sample consists of oxidized and unoxidized ore with chalcopyrite, sphalerite, pyrite and copper oxides. Footwall is a gray dark banded schist 170

348 153953 340 52' 58" 1130 58' 05" PCMS Antler mine dark blackish-brown selected sulfide from "ore" pile at main shaft collar consisting of pyrite, chalcopyrite and sphalerite 110

349 153954 340 52' 58" 1130 58' 05" PCSC Antler mine waste dump, gray biotite schi st 170 Mt.SopriS Site Sample Location Geologic Sci nt No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

350 153955 340 53' 06" 1130 58' 13" PCSC Antler mine representative selected pieces of gray schist core from hole B-8, box 127, 1202' - 1212'. No KUT run

351 153956 340 53' 06" 1130 58' 13" PCWP Cavalliere-Wabayuma Peak pluton. Antler mine core, hole B-8, box 7, 186'-196', representative selected pieces of medium to fine grained light pinkish gray biotite, quartz monzonite porphyry. No KUT run

352 153957 340 52' 46" 1130 58' 05" PCBT Blue Tank pluton, medium grained, gray, porphyritic quartz monzonite gneiss, foliae strike N 52oE dip 70 0 W 240

353 153958 340 52' 49" 1130 56' 35" PCCC Copper Creek (Bee Springs - Bar IL) pluton Medium gray coarsely porphyritic biotite quartz monzonite, moderately foliated, abundant 50% K-feldspar phenocrysts averaging 15x6mm and up to 45x15mm in coarser phases. Intruded by a pink pegmatite zone and in turn intruding dark metasediments with local epidote alteration on contacts 370

354 153959 340 54' 00" 1130 56' 44" PCBT Blue Tank pluton, gray, biotite-muscovite, medium grained porphyritic quartz monzonite gneiss, intruded by 2" to 1' thick granite pegmatite stringers. Biotite shows minor alteration to muscovite or sericite typical of this pluton 310

355 153960 340 54' 48" 1130 61' 47" PCBT Blue Tank pluton orange brown biotite- muscovite quartz monzonite gneiss 300

356 153961 340 56' 04" 1130 55' 14" PBMT Precambrian (?) Boriana mine tailings. Boriana tungsten mine, gray mill tailings, largely of Precambrian gray schist with fine quartz from a Precambrian or Laramide quartz- wolframite vein with minor chalcopyrite and molybdenite 200 Mt. Sopri s Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments. CPS

357 153962 340 56' 13" 1130 54' 30" PCBT Precambrian Blue Tank pluton, brown, medium grained biotite-muscovite quartz monzonite porphyry, with minor goethite and hematite 310

358 153963 340 56' 34" 1130 56' 04" PCBT Brown Blue Tank pluton, biotite quartz monzonite gneiss with minor muscovite 250

359 153964 340 57' 14" 1130 54' 55" PCBT Blue Tank pluton. Altered red-yellow muscovite quartz monzonite gneiss; "greisen" on Robinett Ridge. Mapped as "Laramide granite" or "TKG" by Wilson, et al, 1959, 1969; is definitely Precambrian, although muscovite alteration may be Laramide age 2 80

360 153965 340 57' 51" 1130 56' 20" PCWP Greenish white quartz monzonite gneiss of Cavalliere-Wabayuma Peak pluton, foliae strike N 60E, dip 45 0 W, with minor epidote, locally strong epidote near gneiss contact 140

361 153966 340 58' 16" 1130 54' 35" PCBT Blue Tank pluton. Brownish gray, medium grained, crowded porphyritic biotite- muscovite quartz monzonite gneiss with mild muscovite alteration of biotite, stronger on joint planes. Muscovite granite pegmatite dikes 6" - 3' wide are common 270

362 153967 350 00' 15" 1130 52' 59" PCBT Blue Tank pluton. Fresh,gray, biotite quartz monzonite gneiss, medium grained with minor muscovite 300

363 153968 350 01' 41" 1130 54' 14" PHGD Hualapai granodiorite. Gray biotite granodiorite gneiss, medium-coarse grained with minor epidote on fractures 140

364 153969 350 03' 10" 1130 53' 13" PCD Kessler's (1976)"medium grained granite", Democrat biotite quartz monzonite, reddish brown 450 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested names, discription, comments. CPS

365 153970 340 48' 5 8" 1130 51' 54" PCQM Gray coarse grained equigranular quartz monzonite or granite dike, 300' wide cutting Burch Peak quartz monzonite. Weak or no foliation. Coarse ragged biotite. well weathered 250

366 153971 340 49' 01" 1130 52' 02" PCBP Burch Peak batholith. Fresh dark gray to black coarsely porphyritic, 50% biotite with distinctive blue-gray microcline phenocrysts to 30mm oriented to N 36 0 W, +/-900 foliation. Minor epidote ,chlorite 1 30

367 153972 340 49' 30" 1130 56' 52" PCBP Dark gray, coarsely porphyritic crowded 40% K-feldspar phenocrysts, biotite quartz monzonite of Burch Peak batholith 150

368 153973 340 48' 50" 1130 53' 05" PCCC Copper Creek pluton, a gray biotite quartz monzonite gneiss, coarse grained, 30% oriented potash feldspar phenocrysts from l0x4mm to 43xl0mm; foliae strike NE, dip +/- 900 4 40

369 153974 340 48' 07" 1130 55' 44" PCCC Copper Creek pluton. Gray biotite quartz monzonite gneiss cuttings from Rocky Mt. Energy location drill hole. CPS and KUT is probably not representative of cuttings 280

370 153975 340 48' 18" 1130 54' 52" PCCC Copper Creek pluton, brownish gray, biotite quartz monzonite gneiss, coarsely porphyritic, taken at water tank 4 30

371 153976 340 48' 09" 1130 55' 13" PCCC Location drill hole cuttings of Copper Creek pluton. Hole GF-25 of Rocky Mt. Energy Co. drilled to 235' on 10/19/76 for Scott claims 73-80. Pile too small for KUT readings. Gray in color 340 M .Sonris Site Sample Location Geologic No. No. Latitude Longitude Unit Code Suggested names, description, comments. CPS

372 153977 340 47' 54" 1130 55' 18" PCCC Copper Creek pluton. Gray cuttings, largely aplite, but some gneiss from Rocky Mt. Energy Co. location drill hole GF-24, drilled on 10/19/76 to 345' for Scott No. 95 to 105 claims 4 40

373 153978 340 47' 53" 1130 55' 00" PCCC Gray Copper Canyon biotite quartz monzonite gneiss cuttings from Rocky Mt. Energy Co. location drill hole 4 50

374 153979 340 47' 33" 1130 54' 35" PCCC Brownish gray coarsely porphyritic biotite quartz monzonite porphyry as cuttings of Copper Creek pluton from location drill hole GF-22, drilled to 500' for Kay Claims No. 37 to 46 for Rocky Mt. Energy Co. on 10/1 7-1 9/76 550

375 153980 340 43' 22" 1130 55' 12" PCDF Light brownish gray, coarsely porphyritic, 45x20mm phenocrysts common, biotite quartz monzonite of Dutch Flat pluton 590

376 153981 340 45' 00" 113 54' 06" PCGN Gray..biotite quartz monzonite gneiss with scattered coarse and long 35x8mm microcline phenocrysts, intruded by the Dutch Flat and Copper Creek plutons 4(00

377 153982 340 45' 30" 1130 53' 54" PCCC Copper Creek pluton. Gray coarsely porphyritic biotite quartz monzonite with minor purple fluorite I540

378 153983 340 41' 25" 1130 56' 17" PCDF Gray, coarsely porphyritic biotite quartz monzonite porphyry of Dutch Flat pluton I550

379 153984 340 42' 22" 1130 54' 37" PCDF Gray,coarsely porphyritic biotite quartz monzonite of Dutch Flat pluton,. with 30% microcline phenocrysts 630 Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested names, description, comments. CPS

380 153985 340 41' 05" 1130 54' 00" PCDF Gray, fine to medium grained biotite quartz monzonite gneiss, probably border phase of Dutch Flat pluton, common fluorite, rare large phenocrysts, weak foliation at N 28oE and +/- 900 660

381 153986 340 41' 15" 1130 51' 13" PCGN Light gray biotite quartz monzonite gneiss of Beecher Canyon, a possible mappable unit 310

382 153987 340 42' 00" 1130 49' 23" PCBP Pinkish gray, coarsely porphyritic, biotite quartz monzonite gneiss, very strongly foliated at N 400 E and 650 dip, with abundant coarse biotite schlieren. Burch 340 Peak batholith 383 153988 340 42' 00" 1130 49' 28" PCQM Precambrian quartz monzonite dike outcrop trends N 13oE, medium grained, gray pink, 75" wide, moderately foliated, intrudes Burch Peak pluton near No. 382, contact strikes N 40uE, dips 58 0 S, conformable to Burch Peak foliation. Other near-parallel and non-parallel 2"-1' dikes are common, coming off this dike at various angles 400

384 153989 340 42' 20" 1130 55' 46" PCDF Dutch Flat pluton "greisen". Greenish gray, chlorite-ser.icite altered Dutch Flat porphyritic biotite quartz monzonite, 300 ft. southeast of NWA Site 18. Cut by numerous bull quartz veins and veinlets, some with minor red, gray hematite 400

385 153990 340 40' 31" 1130 51' 55" PCGN Light pinkish gray, porphyritic, medium to coarse grained, biotite quartz monzonite gneiss, definitely not Dutch Flat or Burch Peak, presumed to be older terrain 350 Mt.Sopris Site 1 Sample Location Geologic Sci nt

No. I No. Latitude Longitude Unit Code Suggested names, descriptions, comments. CPS

386 153991 34 40' 5 7" 1130 51' 19" PCGN Fresh,gray, biotite quartz monzonite gneiss cuttings from cased rotary drill hole near lower Beecher Well corral 275

387 153992 340 40' 25" 1130 52' 27" PCDF Gray, contact phase biotite quartz monzonite gneiss of Dutch Flat pluton. Abun- dant microcline phenocrysts, 30%, lOx4mm and well oriented. Fluorite noted. Has less biotite and weaker foliation than PCGN (No. 385) in contact with it 620

388 153993 340 39' 18" 1130 49' 00" PCBP Dark gray, biotite quartz monzonite porphyry of Burch Peak pluton

389 153994 340 38' 11" 1130 46' 40" W GD Dark gray, granodiorite gneiss, possibly Wikieup granodiorite of Putnam (1961) taken at Crozier Tank. Foliation varies and texture is contorted. Orientation of foliation may average N 20 0 W, with dip 37 0 E. Many aplite and granite pegmatite stringers. Older gneiss intruded by Burch Peak bathol ith 110

390 153995 340 36' 04" 1130 49' 10" PCGN Pinkish gray, quartz monzonite (?) gneiss, foliae strike north, dip 37 0 E with reverse slip faults. Numerous low angle fractures due to regional cataclastic deformation. Numerous granite pegmatites in part parallel to foliation. This unit is intruded by the Stouts Well granite 380

391 153996 340 33' 57" 1130 45' 21" PCGS Gray, medium grained, weakly porphyritic biotite quartz monzonite of Groom Sgrings pluton. Weak foliation strikes N 60 W, dips 65 N 300 Mt.Sopris Site Sample Location Geologic Sci nt No. No. Latitude Longitude Unit Code Suggested names, descriptions, comments. CPS

392 153997 340 38' 22" 1130 41' 01" LDCP Light gray, Laramide Devils Canyon porphyry at porphyry copper prospect drill hole site. Biotite phenocrysts 2%, disseminated pyrite 1%, rare chalcopyrite 120

393 153998 340 28' 28" 1130 38' 56" PCSG Precambrian Signal granite. Pink, coarsely porphyritic equigranular biotite granite abundant deeg pink potash feldspars, foliation strikes N 40 W with dip of 650 NE. Same unit as No. 21 500

394 153999 340 33' 36" 113 38' 39" ' PCBP Burch Peak batholith. Gray, biotite-rich strongly gneissic quartz monzonite with blue gray K-feldspar phenocrysts, well weathered 240

395 154000 340 32' 42" 1130 34' 51" PCQM Medium brownish gray colored, porphyritic, biotite quartz monzonite gneiss, potash feldspar phenocrysts up to 13x6mm. Similar to but coarser, more porphyritic than Groom Springs pluton, does not resemble Burch Peak batholith. Pluton is largely overlain by Tertiary lake beds and contacts are covered 200

NOTE: NWA Sites 396-420 (154001-154012 106516-106529) are water samples W-35 through W-59. (See Water Samples List). Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested names, descriptions, comments. CPS 6 i6-J7 Ss .ij, r yAvAi 6 /crAG/ A A6774 A T 421 106530 340 28' 55" 1130 20' 28" PCCL Precambrian County Line batholith, BUCdzo c E "Mohave Border ranie of Shaffiqullah, G'/2' 1980. Brownish gray, weathered goethitic, medium grained porphyritic quartz monzonite, with gray K-feldspar phenocrysts 490 Lc Y - e/A4Jr 9 s ye Y4 4ZA r .- cF/-,- cqA 1C4q-j 422 106531 340 30' 47" 1130 32' 20" PC'P ray, Burch Peak quartz monzonite pluton 250

423 106532 350 11' 44" 1130 55' 31" PCRH Pinkish gray or brown, goethitic, medium grained porphyritic quartz monzonite gneiss of Rattlesnake Hill pluton 350

424 106533 350 11' 02" 1130 55' 57" PCRH Light gray, fine grained quartz monzonite gneiss, with gray Precambrian metasedi- mentary inclusions 275

425 106534 350 09' 13" 1130 53' 33" PCHP Light gray to brown, coarse grained, porphyritic, biotite quartz monzonite of Hualapai Peak pluton with negligible foliation disseminated hematite, high angle N63bW joints 200

426 106535 350 11' 24" 1130 52' 05" PCHP Medium gray goethitic coarsley porphyritic, quartz monzonite of Hualapai Peak pluton, from road cut at Neal benchmark 420

427 106536 350 10' 14" 1130 51' 02" PHGD Dark gray, biotite, porphyritic, granodiorite gneiss of Hualapai granodiorite. Alt'd rock, vein material and granite pegmatite noted on Frost mine dump at adit 175

428 106537 350 10' 13" 1130 50' 40" PCPG Light pinkish gray, medium grained, non porphyritic, granite pegmatite,with rare biotite and fluorite, intrudes Hualapai Peak quartz monzonite pluton 280 Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

429. 106538 350 08' 39" 1130 49' 18" LQVN Light yellow-gray, quartz, limonite and 750 pyrite vein material from "hot spot" on Enterprise Mine dump. Shaft on 12-15' wide vein-fault which strikes N30W, dips +90*, presumed Laramide age

430. 106539 350 08' 39" 1130 49' 20" PCHP Gray-brown, coarsely porphyritic, biotite 220 quartz monzonite gneiss of Hualapai Peak pluton

431. 106540 350 08' 32" 1130 49' 02" LWW Light pinkish-gray, Laramide quartz monzo- 150 nite porphyry dike, about 36 feet wide striking N.10 W., dipping 650 to 700 West and intruding Hualapai Peak pluton. Believed to be related to Laramide Wheeler Wash granodiorite

432. 106541 350 08' 54" 1130 49' 22" QMGN Light gray, fine-grained, felsite, 260 aplitic quartz monzonite gneiss dike on north Enterprise vein wall, next to site 433

433. 106542 350 08' 54" 1130 49' 22" LQVN Yellow-brown vein material from prominent 170 large cut on ridge of north part of Enter- prise vein, next to site 432, showing quartz, goethite, jarosite, azurite, malachite

434. 106543 350 07' 48" 1130 49' 27" LQVN Gray, pyrite, limonite vein material from 120 Century Mine dump

435. 106544 350 07' 47" 1130 49' 24" PCPG Light gray, coarse-grained, granite peg- 600 (LQVN) matite, with quartz veinlets, containing goethite, limonite and hematite after sulfides. Suspected U(?) mineral in hematite after sulfides in veinlets of Laramide age Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

436. 106545 350 07' 48" 1130 49' 11" PCHP Gray, coarsely porphyritic, biotite 200 quartz monzonite gneiss of Hualapai Peak pluton from Odle Ranch area

437. 106546 350 07' 21" 1130 49' 37" PCHP Gray, Hualapai Peak quartz monzonite, 215 limonitic and weakly altered, from upper McGarry's wash area

438. 106547 350 07' 25" 1130 48' 41" LWW Wheeler Wash pluton, light pinkish-gray, 120 altered, Laramide quartz monzonite porphyry with jarosite, goethite and lesser hematite

439. 106548 350 06' 30" 1130 48' 34" LWW Wheeler Wash pluton, Laramide, gray quartz monzonite porphyry, unweathered dump material, containing sericite, chlorite, fresh meta stable pink potash feldspar. Near well and Standard Minerals (Telluride Chief) mine adit (on 6' wide vein-fault zone including 2' qtz vein, N26 W, dip 74 W)

440. 106549 350 06' 36" 1130 48' 11" PCHP Blue-gray, porphyri tic, biotite quartz 140 monzonite. Coarse-grained, crowded, blue-gray phenocrysts. May not be in place and may not be Hualapai Peak quartz monzonite(?)

441. 106550 350 05' 57" 1130 48' 29" LWW Wheeler Wash pluton. Light gray Laramide 135 quartz monzonite porphyry. Fine to medium- grained, sericite, hydromica on fractures Quartz veinlets to 3" thick with goethite after sparse sulfides Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description,comments CPS

442. 106551 350 05' 37" 1130 49' 10" LWW Laramide Wheeler Wash pluton. A light 110 gray, fine-grained biotite quartz monzonite porphyry with chlorite and sericite on fractures, pyrite and quartz-pyrite veinlets, and minor goethite. Veinlets strike N40 E, N80 E and E, are high angle

443. 106552 350 06' 04" 1130 49' 28" PCD Democrat granite pluton, grayish-pink, 1000 medium-grained altered granite or quartz monzonite. Quartz-pyrite veinlets must carry uranium mineralization presumed to be Laramide age. Anomalous count is 450-1000 cps (Mt. Sopris)

444. 106553 350 06' 09" 1130 49' 4711 PCHP Coarse-grained, pinkish-gray, biotite 275 quartz monzonite, well-mineralized with qtz-pyrite vnlts in N5-12*E, high angle; N20-30 W, dip 60-65 W; N62-75*W, dip +90* fracture sets

445. 106554 350 06' 06" 113 49' 49" LQVN Laramide quartz vein striking N.20 W. 250 and dipping 70 W at adit. Whitish- yellow wall rock and vein quartz with visible pyrite and molybdenite.Oxidized silver mineral suspected but not identified

446. 106555 350 05' 25" 1130 49' 42" PCD Precambrian quartz monzonite gneiss, 550 fine-grained Democrat granite pluton. Altered, with pyrite veinlets, goethite and sericite. Pinkish-gray Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

447. 106556 350 05' 23" 1130 50' 03" PCD Democrat granite. Fine to medium- 620 grained, pinkish gray quartz monzonite gneiss, with primary biotite and secondary sericite

448. 106557 350 05' 11" 1130 50' 27" PCD Democrat granite. BFEC Sample MGC 26- 700 5ppm uranium identified. Fine-grained biotite quartz monzonite gneiss, with quartz-pyrite veinlets and epidote and chlorite on fractures, pinkish gray

449. 106558 350 04' 53" 1130 51' 15" PCD Democrat granite, Laxton prospect waste 690 dump. Gray, medium-grained, slightly porphyritic quartz monzonite gneiss. No tungsten or other mineralization noted. It is reported to be a tungsten prospect

450. 106559 350 04' 44" 113 51' 10" PCD Democrat granite. Fine-grained, brownish 850 gray quartz monzonite gneiss, BFEC MGC-141 Sample area-18.6 ppm uranium reported

451. 106560 350 05' 35" 1130 51' 16" PCHP Hualapai Peak biotite quartz monzonite. 220 Fresh, unaltered, gray

452. 106561 350 05' 45" 1130 51' 18" PCHP Soil(regolith). Hualapai Peak quartz 2600 monzonite. Red-brown, orange, black oxidized regolith-soil sample, includes rock and limonites from -veinlet or fracture that once contained sulfides

453. 106562 350 05' 45" 113 51' 18" PCHP Hualapai Peak quartz monzonite cuttings from 400 drill hole, showing minor disseminated pyrite. Light gray. Hole depth unknown but hole diameter at surface is large Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

454. 106563 350 05' 45" 1130 51' 10" PCHP Hualapai Peak quartz monzonite, light 180 gray, cuttings from slim hole, shallow(?)

455. 106564 350 05' 36" 1130 51' 50" PCHP Brown to orange gray, well-weathered, 230 Hualapai Peak quartz monzonite

456. 106565 350 06' 26" 1130 53' 46" PCSM Sawmill Canyon pyroxenite(?), black 80 Precambrian meta-volcanic. Near park entrance sign. Overlies Precambrian fine-grained garnet schist

457. 106566 350 06' 56" 1130 54' 19" PCHP Pinkish gray Hualapai Peak quartz 210 monzonite from middle Sawmill Canyon

458. 106567 350 08' 36" 1130 55' 53" PCRH Rattlesnake Hill pluton. A pinkish- 230 brown fine-grained quartz monzonite gneiss

459. 106568 350 09' 40" 1130 55' 38" PCRH Rattlesnake Hill pluton. An orange-gray 190 medium-grained porohyritic quartz monzonite gneiss. Located about 50 yards from Al O'Neill soil anomaly in road, i.e., MGC-133-106.8 ppm uranium

460. 106569 350 09' 38" 1130 55' 40" PCRH Rock and soil. Rattlesnake Hill quartz 950 monzonite and soil. Hematitic, weathered rock and dark soil, apparently a small black, biotite-rich zone of the Rattle- snake Hill pluton. Rad anomaly appears to be in the dark soil. BFEC Sample MGC- 133, 106.8 ppm cU, is possibly here

461. 106570 350 06' 49" 1130 56' 03" PCRH Rattlesnake Hill gray medium-grained 170 quartz monzonite gneiss Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

462. 106571 350 06' 11" 1130 59' 25" PCYF Yellow Flower pluton, gray medium- 150 grained, biotite quartz monzonite gneiss. Strong foliation striking E and dipping 500 to north

Note:(106572 was not assigned)

463. 106573 350 05' 35" 1130 58' 52" PCYF Yellow Flower quartz monzonite gneiss, fine-grained, brownish-gray, biotitic. Volcanic appearance, assumed to be chill zone of pluton

464. 106574 350 05' 21" 1130 58' 32" PHGD Hualapai granodiorite gneiss, gray, 240 medium-grained, well foliated

465. 106575 350 05' 35" 1130 57' 44" PCYF Yellow Flower gray quartz monzonite 200 gneiss, strong biotite. Also, could be Hualapai granodiorite(?)

466. 106576 350 04' 34" 1130 48' 46" LWW Laramide granodiorite porphyry, gray, 250 pyritic, cuttings composited from 2 drill holes one by Kerr McGee and one by Union Energy

467. 106577 350 04' 31" 1130 49' 00" LWW Laramide granodiorite, porphry, gray 80 drill hole cuttings from Union Energy drill hole

468. 106578 350 04' 31" 1130 49' 53" QMGN Brownish-gray quartz monzonite gneiss 500 dike cut by pegmatite, and intruding Hualapai granodiorite. Pegmatite has no rad anomaly

469. 106579 350 04' 12" 1130 51' 49" PCD Democrat granite pluton, near middle adit 520 of Democrat mine, brownish-gray medium- grained granite or quartz monzonite Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

470. 106580 350 02' 51" 1130 49' 48" PCGK Precambrian Gold King gneiss,older 200 terrain intruded by Precambrian Hualapai granodiorite, Blue Tank pluton, pegmatites,.Laramide Wheeler Wash pluton and Laramide dikes. Gray, medium- grained Precambrian biotite quartz monzonite gneiss near Jackman Spring

471. 105681 350 03' 28" 1130 49' 34" LWW Laramide granodiorite porphyry Wheeler 140 Wash pluton, gray colored cuttings from Union Energy drill hole with rare pyrite crystals

472. 105682 350 04' 08" 1130 49' 07" LWW Cuttings from another Union Energy drill 90 hole, otherwise identical to site 471 description except no pyrite noted

473. 106583 350 05' 15" 1130 48' 48" PCOA Precambrian Odle Ranch Alaskite from air- strip cut near Odle Ranch corral. Medium- grained, light gray quartz-microcline- muscovite plagioclase rock presumed to be altered Precambrian porphyritic quartz monzonite

474. 106584 350 03' 35" 1130 48' 41" PCGK Gold King gray biotite quartz monzonite 120 gneiss foliae strike N.67 E and dip + 900

475. 106585 350 03' 27" 1130 48' 49" PCGK Gold King gray quartz monzonite gneiss, 120 altered, with minor Laramide quartz monzonite dike material containing rare pyrite. Union Energy drill hole cuttings

476. 106586 350 01' 25" 1130 47' 03" PCGK Gold King gray quartz monzonite gneiss, 250 medium-grained porphyritic, strongly foliated. From Moss Wash area Mt.Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

477. 106587 350 01' 30" 1130 50' 12" PCGK Gold King, brown-gray, quartz monzonite 260 gneiss showing goethite and jarosite after pyrite on joints

478. 106588 350 01' 31" 1130 49' 56" PCPG Float boulder in Moss Canyon below Gold 1375 King mine. Granite Pegmatite with garnet, minor muscovite and allanite(?) Black coarse crystaline radioactive mineral is slightly magnetic. Strong Th,U indicated by spectrometer

479. 106589 350 02' 07" 1130 48' 54" LWW Laramide Wheeler Wash pluton. Gray granodio- 80 rite porphyry, Union Energy drill hole cuttings

480. 106590 350 01' 15" 1130 50' 15" BFSC Precambrian biotite feldspar schist, 1300 2750 feet north of 153624 sample, on same body. Could be meta-igneous sill derived from Blue Tank pluton conformably intruding Gold King gneiss. Biotite 80%+. Black

481. 106591 350 01' 05" 1130 51' 26" PCBT Blue Tank pluton. Gray medium-grained 250 biotite quartz monzonite in Cedar Basin

482. 106592 350 00' 13" 1130 49' 06" PCGK Gold King gneiss, gray biotite quartz 275 monzonite gneiss

483. 106593 350 00' 01" 113" 48' 58" LGD Laramide biotite granodiorite or quartz 110 monzonite porphyry dike. Fine-grained, gray. Estimate 400 feet wide. Strike N.40 E

484. 106594 340 59' 29" 1130 49' 37" PCGK Gold King gneiss, 10% biotite, quartz 300 monzonite gneiss with minor muscovite. Light gray Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested name, description, comments CPS

485. 106595 340 59' 17" 1130 50' 25" LGD Laramide (?) porphyritic quartz monzo- 500 nite dike, with disseminated specular hematite, 20 feet wide cutting metasediments. Light greenish-grey, age, composition uncertain

486. 106596 340 59' 15" 113* 50' 42" PCBT Blue Tank pluton. Fresh, porphyritic, 250 biotite quartz monzonite gneiss. Some muscovite. Abundant black unaltered schlieren inclusions. Gray overall

Note (106597 was not assigned)

487 106598 340 58' 08" 1130 51' 02" LQVN Silver Mountain Laramide quartz vein. 150 Variable N.13*E strike and variable high angle easterly dip

488 106599 350 03' 00" 1130 48' 47" LWW Wheeler Wash pluton. Union Energy drill 85 hole. Gray Laramide granodiorite porphyry cuttings

489 106600 350 03' 01" 1130 48' 46" LQVN Laramide quartz vein. Gray-brown, 6" 480 rusty gouge zone fault striking N.1W and dipping vertical. Anomalous radioactivity suggests uranium was once present, now leached

490. 106601 340 39' 38" 113* 44' 43" PCBP Burch Peak pluton. Brownish-gray, coarse- 150 grained, porphyritic biotite quartz monzonite. Crowded K-feldspar phenocrysts

491. 106602 340 40' 10" 1130 44' 00" PCBP Burch Peak pluton, Aubrey Peak area. 150 Includes meta sediments, pegmatites and quartz monzonite gneiss xenoliths (large zones). Gray, weathered porphyritic biotite quartz monzonite Mt. Sopris Site Sample Location Geologic Scint No. No. Latitude Longitude Unit Code Suggested nam. , description, comments CPS

492. 106603 340 42' 01" 1130 44' 58" PCBP Burch Peak pluton. Very coarse, 160 porphyritic, biotite quartz monzonite

493. 106604 340 45' 12" 1130 46' 49" PCBP Burch Peak pluton. Dark gray, medium 150 to coarse-grained, porphyritic biotite quartz monzonite gneiss

494. 106605 340 35' 47" 1130 33' 18" PCQM Biotite quartz monzonite gneiss on 130 Signal Road. Strongly foliated at N65 E., dipping 80 *East

495. 106606 340 29' 27" 1130 30' 48" LQVN Laramide(?) quartz vein material from 1100 the State Mine dump (See AEC PRR) with hematite and pyrite. Green-black, hard fault gouge selvage in quartz vein is more radioactive than bulk of vein. High radioactivity, (4000 cps) in cross cut indicates former U308 in fractures in footwall of vein. Vein-fault strikes N720W dips 47 S, cuts anomalous Greenwood Peak pluton

496. 106607 340 29' 27" 1130 30' 48" PCGP Greenwood Peak pluton. Grayish-pink, 780 coarse-grained porphyritic, with abundant quartz phenocrysts

497. 106608 340 29' 25" 113* 31' 03" PCBP Burch Peak pluton. Dark blackish-gray 300 and black stained coarsely porphyritic biotite quartz monzonite, older, near contact with Greenwood Peak pluton. Higher than normal radioactivity may be due to proximity of Greenwood Peak pluton

NWA 106609- are water samples W-60 through W-90 (see Water Sample List) 498-528 106641

NORTHWESTERN ARIZONA PLUTONICS WATER SAMPLE LIST

Water Site Sample Location Geologic No. No. No. Latitude Longitude Unit Code Type Outcrop/Producing horizon, comments

1. 44 153647 340 43' 47" 1130 51' 56" PCCC Well Copper Creek bio qtz monz Bar IL Ranch, steel tank,at rock chip sample NWA-30, 153633

2. 45 153648 340 50' 46" 1130 54' 39" PCDF Spring Dutch Flat bio qtz monz, Mud Spring

3. 46 153649 350 05' 38" 1130 53' 14" PCHP Spring Hualapai Peak granite, spring at rock chip sample NWA-35, 153638

4. 47 153650 350 04' 35" 1130 52' 53" PCHP Mine Anerican Flag silver mine adit cuts PHGD Laramide(?) vein Precambrian Hualapai LQVN Peak granite, Precambrian Hualapai granodiorite gneiss, near dump rock chip sample NWA- 36, 153639

5. 48 153651 350 04' 07" 1130 51' 45" PCD Stream Democrat qtz monz gneiss, Hualapai granodiorite gneiss, Stream in moss wash SE of Democrat mine - U anomaly

6. 86 153690 340 35' 22" 1130 47' 37" PCSW Well Windmill, Stouts Well in Precambrian Stouts Well granite near NWA-294, 153899 rock chip sample

7. 87 153691 340 28' 28" 113* 27' 40" PCGP Well' Windmill in Precambrian Greenwood Peak pluton, at rock chip sample NWA-76, 153680

8. 88 153692 340 41' 26" 113 50' 35" PCGN Well Windmill, Upper Beecher Canyon well, murky water

9. 89 153693 340 35' 29" 1130 43' 04" PCGR Well Coyote Well, Windmill, clear water, Qal flat plain, PC granite subcrop? Near Groom Springs pluton Water Site Sample Location Geologic No. No. No. Latitude Longitude Unit Code Type Outcrop/Producing horizon, comments

10. 154 153759 350 10' 08" 1130 37' 07" PCGR Well Round concrete water tank, clear water, source is believed to be well, Sec.24, 21N,13W Tin Mt. 7 1/2' Quad

11. 155 153760 35 0 04' 49" 1130 36' 24" PCGN Well Water tank, clear water, Sec.25, 20N,13W Austin Peak 7 1/2' Quad

12. 156 153761 350 07' 04" 1140 03' 04" PCGN Spring Lookout Spring, iron box, clear water, PC granite gneiss, meta seds, bio schist beds, 210 cps. Foliae NE +900 dip

13. 157 153762 350 06' 34" 1140 04' 26" PCHM Spring Boulder Spring cave in rocks, clear water spring on map outside rocks is dried up

14. 199 153804 350 11' 54" 1130 33' 28" PCPG Spring Faculty Spring, possibly a caved adit in red granitic Precambrian pegmatite intruding Precambrian diorite gneiss and metasediments

15. 200 153805 350 11' 10" 1130 42' 52" QTS Well Deep well in Hualapai Wash valley, electric pump, clear water from bleeder valve

16. 201 153806 350 23' 03" 1130 46' 15" PCSC Spring Spring, iron tank, algae, black hornblende schist

17. 202 153807 340 56' 24" 1130 46' 21" QTS Well - Windmill, Hibernia Canyon wash, rust from pipe in sample

18. 295 153900 340 28' 56" 1130 31' 23" PCBP(?) Spring Big Sandy Spring, clear water in gal- vanized iron tank 100 feet below spring

19. 296 153901 350 21' 55" 1140 08' 18" LIP Active Ithaca pit. Porphyry Cu-Mo mine, water, Mine sump pond. Duval Corporation

20. 297 153902 350 07" 12" 1140 08' 26" GDGN Mine Clear mine water, Todd Canyon lower tunnel Water Site Sample Location Geologic No. No. No. Latitude Longitude Unit Code Type Outcrop/Producing horizon, comments

21. 298 153903 350 19' 38" 1140 08' 05" LVN Mine Todd Basin tunnel mine water

22. 299 153904 350 19' 44" 114 07' 58" LVN Mine Upper Todd Basin adit water

23. 300 153905 350 19' 27" 1140 07' 49" LVN Mine Mine water, lower Golconda tunnel

24. 301 153906 350 19' 23" 1140 08' 07" LVN Mine Mine water, Mexican adit, caved

25. 302 1539Q7 350 18' 43" 1140 07' 43" PCGN Stream Second NW fork in Cerbat Canyon in diabase clear water, 3"-6" wide, drains Precambrian diabase and Precambrian gneiss

26. 303 153908 350 18' 28" 1140 05' 34" LVN Mine Clear mine water, tunnel,Densmore Ranch domestic water supply. Jordan(?) mine, Precambrian gneiss

27. 304 153909 350 18' 20" 114 06' 11" PCGN Stream North of Sixty Three mine, small free-running clear stream below numerous old mine dumps and workings

28. 305 153910 350 21' 45" 1140 11' 29" TEIC Mine Emerald Isle mine water, pit bottom pool, pale green gray water, inactive open pit copper mine, copper oxides in Tertiary conglomerate

29. 306 153911 350 26' 26" 114 12' 49" PCGN Spring Clear water from spring at windmill, NW 1/4 Sec.33, 24N, 18W, PC gneiss and amphibolite

30. 307 153912 350 21' 00" 1130 45' 58" LVN Spring Hackberry Spring, rusty water from pipe out of old caved tunnel (?). May drain Laramide(?) vein in Precambrian gneiss

31. 308 153913 350 19' 45" 1130 45' 50" PVQM Spring Trap Spring, clear, algal water in concrete cattle trough, PC Valentine pluton Water Site Sample Location Geologic No. No. No. Latitude Longitude Unit Code Type Outcrop/Producing horizon, comments

32. 309 153914 350 21' 05" 1130 44' 14" PVQM Spring Peacock Mt. Ranch Spring, PC Valentine pluton, concrete trough, iron pipe, brass spigot, clear water

33. 310 153915 350 18' 00" 1130 45' 09" PVQM Well Clear water in concrete windmill tank, upper Freirichs well. PC Valentine pluton

34. 311 153916 350 16' 53" 1130 45' 09" PVQM Stream Clear water in stream below spring at upper Freirichs windmill at contact of PC Valentine pluton and PC schist

35. 396 154001 350 22' 26" 1130 49' 43" QAL Spring Crescent Spring, concrete trough at old corral, alluvium,possibly Precambrian Antares II pluton (PANT)

36. 397 154002 350 19' 59" 1130 49' 18" QAL Spring North Water Spring, clear water in large pit in Quaternary-Tertiary(?) gravels

37. 398 154003 350 10' 14" 1140 05' 35" TV Well Windmill, clear water in small iron tank Tertiary Volcanics and Quaternary alluvium

38. 399 154004 350 01' 58" 1140 02' 14" Spring Round iron tank fed by pipe, source is unknown spring in the mountains, algal

39. 400 154005 35* 03' 41" 1140 00' 48" PCGN Stream Trickle clear water in Precambrian black gneiss overlain by Tertiary tuffs, flows

40. 401 154006 350 06' 17" 1130 58' 58" TV Spring Cottonwood Spring, Tertiary volcanics 41. 402 154007 350 06' 30" 1130 55' 29" PCHP Spring Whiskey Spring, clear water in galvan- ized iron barrel near source. Pre- cambrian Hualapai Peak quartz monzonite Water Site Sample Location Geologic No. No. No. Latitude Longitude Unit Code Type Outcrop/Producing horizon, comments

42. 403 154008 350 06' 27" 1130 55' 36" PCHP Stream Cottonwood Canyon abundant clear, rushing water, Precambrian Hualapai Peak quartz monzonite

43. 404 154009 35 0 03' 14" 1130 59' 16" PCSC Stream Willow Creek, clear rushing stream, 4 feet wide, Precambrian schist

44. 405 154010 340 59' 24" 1130 58' 51" PCWP Well Windmill, Old Camp well, Precambrian Cavalliere-Wabayuma Peak quartz monzonite

45. 406 154011 340 57' 07" 114 03' 13" PCWC Well Windmill, Rock Creek Ranch, steel tank, Precambrian Willow Creek pluton

46. 407 154012 340 58' 44" 1140 00' 43" PCWB Stream Rock Creek, clear water, Precambrian Whiskey Basin pluton

47. 408 106516 340 54' 21" 1140 00' 17" PCWP Stream Clear water, Precambrian Cavalliere- Wabayuma Peak pluton

48. 409 106517 340 52' 05" 1130 56' 40" PCCC Spring Clear water from faulted contact of Precambrian schist and Precambrian Copper Creek pluton. Fault with purple gouge strikes N7*E, dips 70*E

49. 410 106518 340 54' 42" 1130 55' 18" PCSC Mine - Clear water flowing from Copper World mine adit

50. 411 106519 340 54' 59" 1130 56' 06" PCBT Spring Clear water, Precambrian Blue Tank pluton and schist

51. 412 106520 340 48' 57" 1130 51' 48" PCQM Spring Murky water from light gray Precam- brian quartz monzonite dike intruding Burch Peak pluton

Note: (106521 was not assigned) Water Site Sample Location Geologic No. No. No. Latitude Longitude Unit Code Type Outcrop/Producing horizon, comments

52. 413 106522 340 48' 18" 113 54' 52" PCCC Spring Clear water, round concrete tank near sample 153975, Precambrian Copper Creek pluton

53. 414 106523 340 44' 59" 1130 54' 09" PCCC Stream Cow Creek, Precambrian Copper Creek pluton

54. 415 106524 340 43' 45" 1130 54' 46" PCDF Spring La Cienega Spring, 17 Mile (Anderson) Ranch. Precambrian Dutch Flat pluton

55. 416 106525 340 42' 00" 1130 49' 28" PCBP Stream Clear water, stream at sample 153987, Burch Peak pluton

56. 417 106526 340 38' 36" 1130 49' 30" PCGN Well New Well, windmill, clear water. Fine- grained muscovite-biotite granite gneiss 57. 418 106527 340 38' 22" 113* 41! 01" PCGS Spring Pond at Groom Springs, reeds, algae. Precambrian Groom Springs pluton

58. 419 106528 340 35' 27" 1130 43' 58" LDCP Spring Seep from diamond drill hole, Laramide Devils Canyon porphyry

59. 420 106529 340 37' 50" 113* 42' 01" PCBP Well Devils Canyon windmill, water in iron tank, old boiler? downstream.Precam- brian Burch Peak pluton

60. 498 106609 350 11' 24" 1130 56' 01" PCRH Well Windmill in current use for stock. Rattlesnake Hill pluton. Clear

61. 499 106610 350 11' 16" 1130 54' 30" PCRH Well Rattlesnake Hill pluton Sec.19, T.21N., R.15W., currently used for stock. Clear

62. 500 106611 350 09' 13" 1130 53' 33" PCHP Stream Frees Wash running clear. Hualapai Peak pluton Water Site Sample Location Geologic No. No. No. Latitude Longitude Unit Code Type Outcrop/Producing horizon, comments

63. 501 106612 350 10.' 13" 1130 50' 45" PCPG Well Current stock usage. Pegmatite dike or sill. Clear

64. 502 106613 350 09' 35" 1130 50' 49" PHGD Stream Trickle in Hualapai Canyon near Hualapai Spring. Hualapai Peak granodiorite. Clear

65. 503 106614 350 07' 46" 113 49' 27" PCHP Stream Algal trickle, south of Century mine. Hualapai Peak quartz monzonite

66. 504 106615 350 07' 16" 1130 49' 36" PCHP Spring McGarry's wash, at major north-south fault near site 437. Hualapai Peak quartz monzonite. Clear

67. 505 106616 350 06' 41" 1130 48' 57" PCHP Stream Clear flow above white precipitate. Hualapai Peak quartz monzonite near major north-south fault

68. 506 106617 350 06' 41" 113* 48' 39" LWW Stream Murky, light gray flow, associated with light whitish green precipitate near spring. Laramide quartz monzonite porphyry

69. 507 106618 350 06' 15" 1130 48' 10" PCHP Well Odle Ranch wind mill. Hualapai Peak quartz monzonite. Clear

70. 508 106619 350 05' 37" 1130 49' 10" LWW Spring Soap Canyon above Odle Ranch near site 442. Laramide quartz monzonite porphyry. Clear

71. 509 106620 35* 05' 43" 1130 49' 08" LWW Stream Laramide quartz monzonite porphyry about 700 feet further up stream from site 442. Slightly milky flow associated with white alum deposits Water Site Sample Location Geologic No. No. No. Latitude Longitude Unit Code Outcrop/Producing horizon, comments

72. 510 106621 350 05' 35" 1130 51' 16" PCHP Stream Clear flow. Hualapai Peak quartz monzonite, near head of Wheeler Wash, at site 451

73. 511 106622 350 05' 56" 1130 52' 51" PCHP Well Pine Basin, Hualapai Mountain Park, drinking water. Hualapai Peak quartz monzonite. Clear

74. 512 106623 350 08' 42" 1130 56' 09" PCRH Well Windmill for stock, Rattlesnake Hill pluton. Sawmill Canyon, Hualapai Mountain Road one quarter mile below site 458. Clear

Note:(106624 was not assigned)

75. 513 106625 350 09' 27" 1130 57' 22" TV Well Stock windmill, cement lined tank. Tertiary volcanics. Sawmill Canyon, Hualapai Mountain Road. Clear

76. 514 106626 350 05' 21" 1130 58' 32" PHGD Stream Hualapai Peak granodiorite. Yellow Flower Creek also site 464. Clear

77. 515 106627 350 05' 35" 1130 59' 57" TV Stream Tertiary volcanics. Clear flow just below Grande Spring at rock site 465

78. 516 106628 350 01' 58" 1140 04' 28" PCGN Well. From tank near Precambrian gneiss hill just east of Black Rock Wash. Clear

79. 517 106629 350 04' 15" 1130 49' 09" LWW Stream Antelope Wash near Site 472 on Sandy- Democrat Road. Laramide quartz monzonite porphyry. Clear

80. 518 106630 350 02' 51" 1130 49' 48" PCGK Spring Jackman Spring, clear flow. Gold King gneiss

Note: (106631 was not assigned) Water Site Sample Location Geologic No. No. No. Latitude Longitude Unit Code Type Outcrop/Producing horizon, comments

81. 519 106632 350 03' 22" 1130 48' 50" PCGK Spring Gold King gneiss, near Laramide dike and major northerly fault, between rock sample sites 474 and 475

82. 520 106633 350 01' 35" 1130 50' 09" PCGK Spring Gold King mine "castle". Gold King gneiss. Algal seep. Site 8 nearby

83. 521 106634 350 00' 59" 1130 50' 08" PCBT Well Cedar Wash windmill in section 23. Blue Tank pluton. Clear

84. 522 106635 350 00' 59" 1130 50' 08" PCBT Stream Cedar Wash clear flow in section 23. Blue Tank pluton. Clear

85. 523 106636 340 59' 15" 1130 50' 40" PCBT Well Blue Tank pluton and wash. From windmill for stock water. Clear

86. 524. 106637 340 40' 10" 1130 44' 21" QMGN Well Near site 491, in quartz monzonite gneiss roof pendant in Burch Peak batholith near Aubrey Peak. Light green algal. Wilson Ranch windmill

87. 525 106638 340 42' 28" 113 45' 16" PCBP Well Windmill SW 1/4 of SW 1/4 of section 20. Burch Peak pluton. Southeast of Hart Well about 3500 feet. Murky

88. 526 106639 340 43' 01" 1130 45' 55" PCBP Well Hart Well windmill. Burch Peak pluton, pegmatite and gneiss

89. 527 106640 340 44' 15" 1130 46' 45" PCBP Well Old Ranch windmill. Burch Peak pluton. Murky

90. 528 106641 350 06' 05" 1130 49' 28" PCHP Spring Near site 443 in Soap Canyon about one mile above Odle Ranch. Hualapai Peak quartz monzonite pluton. Clear

Project Follow Up Recommendations (Beyond Completion Of Final Report)

Work to follow up this project must include detailed mapping and more rock chip sampling of the anomalous plutons or their anomalous portions and the adjacent rocks. Plutons of special interest include the anomalous Democrat, North Fork Bar IL Canyon, Dutch Flat, Biotite Feldspar Schist, Holy Moses, Green- wood Peak, Hualapai valley and propylitized porphyritic quartz monzonite gneiss (PQMG) near Antares. The propylitized area within the Hualapai Valley pluton (Site No. 55) and the "greisen" (Sites Nos. 18 and 384) within the Dutch Flat pluton should be re-examined. The Wheeler Wash uranium-copper-molybdenum prospect which involves the Laramide Wheeler Wash and the Precambrian' Democrat and Hualapai Peak plutons is a target of special interest, but arrangements with the various owners (claims and surface) should be made before a great deal of detailed work could be most efficiently accomplished. Further geologic mapping with air photo- structural analysis and further detailed sampling of any of these target areas is necessary before any drilling should be realistically contemplated.

- 21 - Northwestern Arizona Plutonics Project No. 30-79-3307 Subcontract No. 79-348S July 21, 1980

BIBLIOGRAPHY

1. Anderson, Phillip, 1979, Personal communication. 2. Armstrong, F. C., 1974, Uranium resources of the future "porphyry" uranium deposits, in formation of uranium ore deposits: Vienna International Atomic Energy, SM-183/12, p. 625-635.

3. Berning, J., Cooke, R., Hiemstra, S. A., and Hoffman, U., 1975. The Rossing uranium deposit, Southwest Africa: Econ. Geology, v. 71, p. 351-368. 4. Buddington, A. F., 1959, Granite emplacement with special reference to North America: Geological Society of America Bulletin, v. 70, p. 671 - 748.

5. Castor, S. B., Berry, M. R., Robins, J. W., 1977, Preliminary Report on uranium and thorium content of intrusive rocks in northeastern Washington and northern Idaho: U. S. Energy and Research Administration Rept. GJBX - 89(77) R, 40p.

6. Christopher, P. A., 1977, Basal-type uranium deposits of the Okanogan Valley in British Columbia (abs.), in Symposium on uranium exploration in the Pacific Northwest, Eastern Wash- ington University, Cheney, p.7 .

7. Darnley, A. G., Charbonneau, B. W., and Richardson, K. A., 1977, Distribution of uranium in rocks as a guide to the recognition of uraniferous areas: Vienna, International Atomic Energy Agency.

8. Damon, Paul E., and Manger, R. L., 1965, Epeirogeny - Orogeny viewed from Basin and Range Province: AIME Soc. Min. Eng. Transactions preprint No. G5133.

9. Davidson, E. S., 1973, Water resources appraisal of the Big Sandy area, Mohave County, Arizona: Arizona Water Commission Bull. 6, 40p. 10. DeVoto, R. H., 1978, Uranium Geology and Exploration: Colorado School of Mines, 396 p.

11. Dings, M. G., 1951, The Wallapai mining district, Cerbat Mountains, Mohave County, Arizona: U.S. Geol. Survey Bull. 978-E, pp. 123 - 162.

- 22 - Bibliography (Cont' d) 12. Everhart, D. L., and Wright, R. J., 1953, The geologic character of typical pitchblende veins: Econ. Geology, p. 48, 77-96.

13. Frondel, C., 1958, Systematic mineralogy of uranium and thorium: U. S. Geol. Survey Bull. 1064, 400 pp.

14. Gillespie, J. B., and Bentley, C. B., 1972, Geohydrology of Hualapai and Sacramento Valleys, Mohave County, Arizona: U.S.G.S. Water Supply Paper No. 1899, scale 1:125,000, plate 1.

15. Gornitz, V., and Kerr, P. F., 1970, Uranium mineralization and alteration Orphan Mine, Grand Canyon, Arizona: Econ. Geology, p 65, 751-768.

16. Granger, H. C., and Raup, R. B., 1962, Reconnaissance study of uranium deposits in Arizona: U.S. Geol. Survey Bull. 1147-A, 54 p.

17. Haury, P. S., 1947, Examination of zinc-lead mines in Wallapai mining district, Mohave County, Arizona: U. S. Bur. Mines Rept. Inv. 4101

18. Hewett, D. F., Callaghan, E., Moore, B. N., Nolan, T. B., Rubey, W. W. and Schaller, W. T., 1936,.Mineral resources of the region around Boulder Dam: U.S. Geol. Survey Bull. 352, p. 81-92.

19. Hobbs, S. W., 1944, Tungsten deposits in the Boriana District and the Aquarius Range, Mohave County, Arizona: U. S. Geol. Survey Bull. 940 - I, pp. 247-264. 20. Hurst, M. E., 1922, Rock alteration and ore deposition at Tell- uride, Colorado: Econ. Geology, V. 17, Fig. 61 1:125,000.

21. Jacob, R. E., and Hambleton-Jones, B. B., 1977, Geological and geochemical setting of granites in the eugeosynclinal portion of the Damara Orogen, Rossing area, South West Africa. (abs.): Geol. Society of America Abstracts with programs, V. 9, p. 1,035.

22. Kessler, E. J., 1975, Rubidium-strontium geochronology and trace element geochemistry of Precambrian rocks in the northern Hualapai Mountains, Mohave County, Arizona: unpub. M. S. thesis. Univ. of Arizona, 73 p.

23. King, P. B., 1976, Precambrian geology of the United States; An exploratory test to accompany the geologic map of the United States: U. S. Geol. Survey Prof. Paper 90Z, 85p.

- 23 - Bibliography (Cont'd) 24. Little, H. W., 1974, Uranium in Canada: Canada Geol. Survey Paper 74-1A.

25. Marjaniemi, D. K., and Basler, A. L., 1972, Geochemical invest- igations of plutonic rocks in the western United States for determining favorability for vein-type uranium deposits: U. S. Atomic Energy Comm. Rept. GJO-912-16, 134pp. 26. Mathews Y G. W., 1978, Uranium occurrences in and related to plutonic igneous rocks, in Mickle, D. G. and Mathews, G. W. eds., 1978, Geologic characteristics of environments favorable for uranium deposits: U. S. Dept. of Energy, Open File Rept. GJBX-67 (78), p. 112 - 180.

27. Monroe, R. J., Sass, J. H., Bunker, C. M. and Bush, C. A.. 1975, Abundances of uranium, thorium and potassium from some plutonic rocks in northern Washington: U.S. Geol. Survey Open-File Report 75-221, 14 p.

28. Nininger, R. D., 1977, Recognition of uranium districts, in Recognition and evaluation of uraniferous areas: Vienna, International Atomic Energy Agency, TC-25/1 p. 1-11. 29. Peirce, H. W., Keith, S. D., and Wilt, J. C., 1970, Coal, oil, natural gas, helium and uranium: Bull. 182 Arizona Bur. of Mines, University of Arizona, Tucson.

30. Putnam, G. W., 1961, A study of the distribution of trace elements in some igneous rocks of northwest and central Arizona: Penn. State Dissertation.

31. , and Burnham, C. W., 1953, Trace elements in igneous rocks northwestern and central Arizona: Geochemica et Cosmochimica Acta, V. 27, p. 53-106.

32. Qualheim, B. J., 1978, Hydrochemical and stream sediment reconnaissance basic data report for Kingman NTMS quadrangle: GJBX- 122 (78).

33. Rogers, J.J.W., and Rayland, P. C. 1961, Variation of uranium and thorium in selected granitic rocks: Geochemica et Cosmochimica Acta, V. 25, No. 2 p. 99-109.

34. Schrader, R. C., 1909, Mineral deposits of the Cerbat Range, Black Mountains and Grand Wash Cliffs, Mohave County, Arizona: U.S. Geol. Survey Bull. 397, 226p.

35. , 1917, Geology and ore deposits of Mohave County, Arizona. AIME Trans. V. 56, pp. 196-236.

- 24 - Bibliography ( Co nt'd)

36. Scott, R. C. and Barker, F. B., 1962, Data on uranium and radium in the groundwater in the United States: U.S. Geol. Survey Prof. Paper 426, 115 p.

37. Scott, G. R., Van Alstine, R. E. and Sharp, W. N., 1975, Geologic map of the Poncha Springs quad angle, Chafee County, Colorado, Lat. 380 45' to 390, Long. 106 - 1060 15", Scale: 1:62,500. 38. Shackleford, T. J., 1976, Structural geology of the Rawhide Mount- ains, Mohave County, Arizona: Univ. of Southern Calif. Ph. D. dissertation.

39. Shafiqullah, M., Damon, P. E., Lynch, D. J., Reynolds, S. J., Rehrig, W. A., and Raymond, R. H., 1980, K-Ar geochronology and geologic history of southwestern Arizona and adjacent areas: Arizona Geological Society Digest, vol. 12, pp. 201- 242.

40. Silver, L. T., 1967, Apparent age relations in the older Pre- cambrian stratigraphy of Arizona: (abs.) I.U.G.S. Comm. Geochron, Conf. on Stratified Rocks, Edmonton, Canada 87 p.

41. , 1973, Precambrian of southwestern North America: Conf. on the Precambrian geology of America, oral presentation September 1973.

42. Smith, E. E. N., 1974, Review of current concepts regarding vein deposits of uranium: Formation of Uranium Ore Deposits, 515-529, International Atomic Energy Agency, Vienna.

43. Sorenson, H., 1970, Occurrence of uranium alkaline igneous rocks in Uranium Exploration Geology: International Atomic Energy Agency, Panel. Proc. Ser., p. 161-168.

44. Stensrud, H. L., and More, S., 1980, Precambrian geology and massive sulfide environments of the west-central Hualapai Mountains, Mohave County, Arizona - a preliminary report: Arizona Geological Society Digest, vol. 12, p. 155-165.

45. Stuckless, J. S. and Nkomo, I. T., 1978, Uranium-lead isotope systematics in uraniferous alkali-rich granites from the Granite Mountains, Wyoming, in Implications for uranium source rocks: Econ. Geology,~v. 73, p. 427-441. 46. Taylor, R. B., Scott, G. R., and Wobus, R. A., 1975, Reconnaissance geologic may of the Howard quadrangle, central Colorado, Lat. 380 15 to 380 30', Long. 105' 45' to 1060. Scale: 1:62,500.

47. Thomas, B. E., 1949, Ore deposits of the Wallapai District, Arizona: Economic Geol. v. 44, p. 663-705.

- 25 - Bibliography (Cont'd)

48. , 1953, Geology of the Chloride Quadrangle, Geol. Soc. of America Bull., vol. 64, p. 391-420, 6 fig., 1 pl. 49. U. S. Atomic Energy Commission, Preliminary Reconnaissance Reports, 1970, Preliminary reconnaissance for uranium in Mohave County, Arizona: U. S. Atomic Energy Comm., Division of Raw Materials, Washington D. C., RME-158, TID UC-51.

50. U. S. Department of Energy, 1977, Symposium on hydrochemical and stream-sediment reconnaissance for uranium in the United States: U. S. Dept. of Energy, GJBX-77(77), 468 p.

51. U. S. Department of Energy, 1978, A preliminary classification of uranium deposits: U. S. Dept. of Energy, GJBX-63(78), 78 p.

52. U. S. Geol. Survey 1972, Aeromagnetic map of the Gold Butte- Chloride area, Arizona and Nevada: *U.S.G.S. map series GP-757, Scale: 1:62,500.

53. Vuich, J. S., 1974, A geologic reconnaissance and mineral evaluation Wheeler Wash area, Hualpai Mountains, Mohave County, Arizona. 77 p., 6 maps.

54. Walker, G. W., 1963, Host rocks and their alterations as related to uranium-bearing veins in the conterminous United States: U.S. Geol. Survey Prof. Paper 455-C, pp. 37-55.

55. , and Adams, J. W., 1963, Mineralogy, internal structure and textural characteristics, and paragenesis of uranium- bearing veins in the conterminous United States: U. S. Geol. Survey Prof. Paper 455-D, pp. 55-90.

56. , and Osterwald, F. W., 1963, Introduction to the geology of uranium-bearing veins in the conterminous United States: U. S. Geol. Survey Prof. Paper 455-D, pp. 55-90.

57. Wasserburg, G. J., and Lanphere, M. A., 1965, Age determination in the Precambrian of Arizona and Nevada: Geol. Society of America Bull. vol. 76, pp/ 735-758.

58. West, F. G., and Laughlin, W. A., 1979, Aquarius Mountain area, Arizona: a possible HDR prospect: Los Alamos Scientific Laboratory LA-7804-MS.

59. White, A. J. R., and Chappel, B. W., 1977, Ultrametamorphism and granitoid gneiss: Tectonophysics V. 43, pp. 7 - 22.

- 26 - Bibliography (Cont'd) 60. Williams, S. A., 1979, Letters and project reports.

61. , 1980, Letters and project reports.

62. Wilson, E. D., Moore, R. T., and Cooper, J. R., 1959, Geologic Map of Arizona, Scale: 1:500,000: Arizona Bureau of Mines and U. S. Geological Survey.

63. 1959, Geologic Map-of Mohave County, Arizona, Scae 1:375,000: Arizona Bureau of Mines, University of Arizona, Tucson, Arizona. 64. Whitfield, J. M., Rogers, J. J. W., and Adams, J. A. S., 1959, The relationship between the petrology and the thorium and uranium contents of some granitic rocks: Geochemica et Cosmochimica Acta, vol. 17, pp. 248-271.

- 27 - Subcontract No. 79-348-S N.W. Arizona Plutonics Project No. 30-79-3307

The foregoing status report and appended items which follow herewith, represent the total project effort and results to date.

The partners wish to hereby acknowledge their appreciation and thanks for all who cooperated and assisted in any way.

Respectfully submitted:

Loghry-Heinrichs Joint Venture

James D. Loghry, Partner

Walter E. Heinrichs, Jr., Partner

Distribution: BFEC-GJO, Mr. Burger 1 copy " " Contracts 1 copy

28 July, 1980 P.O. Box 5964, Tucson, AZ 85703 (602) 623-0578

- 28 -

APPENDIX

BFEC-GJO Certificates of Assay------3 pages

Petrography: Letter dated July 19, 1980 from S. A. Williams------2 " Letter dated July 3, 1980 from J. D. Loghry------2 Letter dated March 10, 1980 from S. A. Williams------2 " Data (Rock Analyses)------39" Samples to S. A. Williams, Jan. 29, 1980------10" Letter Jan. 29, 1980 from J. D. Loghry------2 "

Geologic Unit Code Changes June 26, 1980 and July 7,1980--10 "

Rock Chip Samples submitted to 0RGDP------1

Water Samples submitted to ORGDP------1"

Rock & Water Samples submitted to ORGDP lacking data received------1"

ORGDP Analytical Data Critique------3

BFEC-GJO Analytical data received------1

Six digit master sample numbers assigned to replace Nos. 154013 through 154133 originally used in the field------2

ORGDP Computer Analysis printouts (Water)------3 " I" " I " (Rocks)------18

N.W. Arizona Plutonics Project No. 30-79-3307 Subcontract No. 79-348-S Loghry/Heinrichs Joint Venture P. 0. Box 1569

Grand Junction, Colorado 81501 /-

CERTIFICATE OF ASSAY

REQUESTED BY Gardner REQUISITION NO. 900126 DATE 5/1/80

ppm ppm ppm ppm ppm ppm ppm ppm Uaa Sn w F U 3 8 Sn <1 F VIAL VIAL .173G MM 511 65208 7 <10 <1 2690 154 65226 4 <10 <1 250 S IM 512 65209 8 <10 <1 4620 155 65227 1 <10 <1 710 5q(. NIM 513 65210 4 <10 <1 3430 118 NIM 156 65228 5 <10 <1 230 (,q7 NI M 514 65211 3 <10 <1 4270 7Lq NIM 157 65229 12 <10 <1 4100 ~lt9 NIM (ofg NIM 515 56212 2 10 2 2680 -12c NIMH 158 65230 40 10 <1 5710 4qq NIM 516 56213 4 10 2 4090 722. NIM 159 65231 4 <10 2 210 7fo NIM 517 56214 2 10 2 3900 12' NIM 160 65232 2 <10 <1 <200 to NIM 518 56215 6 10 <1 390 -l24NIM 161 65233 2 <10 <1 410 7o2NIM 519 56216 5 10 <1 1140 733 NI M162 65234 11 20 2 1910 703NIM 520 56217 1 20 <1 1910 735NIM 163 65235 15 20 <1 4080 ~l1o NIM 521 56218 30 <10 <1 1440 2'7YNIM 164 65236 13 <10 <1 1100 VoSNIM 522 56219 2 10 <1 430 X38 NIM 165 65237 9 <10 3 740 '14, NIM 523 56220 .17% 10 24 360 CHI NIN 166 65238 35 <10 <1 2570 To7 NIM 524 56221 545 10 24 <200 -I'tC0 NIM 167 65239 5 <10 <1 650 Zoe NIM 525 56222 9 10 <1 1370 1y9NIM 168 65240 2 <10 <1 520 1(0 NIM 151 56223 7 10 <1 <200 751 NIM 169 85241 8 <10 3 2030 Z«l NIM 152 56224 7 10 <1 <200 153 757NIM 170 85242 2 10 20 1040 %11(2 NIM 153 56225 1 <10 <1 320

SENIOR ANALYST P. o. Box 1569

Grand Junction, Colorado 81501

CERTIFICATE OF ASSAY Hal Gardner :QUESTED BYI REQUISITION NO. 900121 I DATE w 3/25/80

ppm Lab No. F

MIM 501 60613 1098 MIM 502 60614 375 MIM 503 60615 4173 MIM 504 60616 4612 MIM 505 60617 3371 MIM 506 60618 362 MIM 507 60619 2820 MIM 508 60620 2229 MIM 509 60621 1999

PARTIAL REPORT

/ i i

:;?... phtwa: 3.) m3 71 SE 0. LYST itr.::o. L-8 Rev. BENDIX FIELD ENGINEERING CORP. /?/77 -. 500 P. 0. Box 1569

Grand Junction, Colorado 81501

CERTIFICATE OF ASSAY

EQUESTED BY S. Abou-Zied REQUISITION NO. 900118 DATE 3/25/80

ppm ppm ppm ppm ppm ppm Lab No. F Sn W Lab No. F Sn w

MIQ 729 59793 563 <10 2 MIQ 743 59807 2432 <10 <1 MIQ 730 59794 9057 <10 12 MIQ 744 59808 1999 <10 2 MIQ 731 59795 1488 <10 9 MIQ 745 59809 2619 <10 <1 MIQ 732 59796 1006 <10 <3 MIQ 746 59810 6914 <10 2 MIQ 733 59797 1593 <10 <10 MIQ 747 59811 954 <10 <1 MIQ 734 59798 717 <10 <1 MI Q 748 59812 503 <10 <1 MIQ 735 59799 440 <10 3 MIQ 749 59813 1688 <10 <1 MIQ 736 59800 996 <10 <1 MIQ 750 59814 2946 <10 11 MIQ 737 59801 1146 <10 <1 *MIQ 350 59815 MIQ 738 59802 1540 <10 <1 MIQ 351 59816 2563 <10 <1 MIQ 739 59803 996 <10 <1 MIQ 352 59817 2608 <10 6 MIQ 740 59804 200 <10 <1 MIQ 353 59818 1869 <10 <1 MIQ 741 59805 4455 <10 2 MIQ 354 59819 343 <10 <1 MIQ 742 59806 1640 <10 <1 *MIQ 355 59820

*Sample not received..

"" ".

. -

IJ j I

jai E90#EALY T P. 0. Box 872 Douglas, AZ 85607 July 19, 1980

James D. Loghry Loghry-Heinrichs Joint Venture P. 0. Box 5964 Tucson, AZ 85703

I have read your letter of July 3 and prepared answers to the direct questions you posed. You may wish to refer to your letter as you read this.

1.) Par. 1, P1.: I suspect that much Precambrian microcline may be annealed orthoclase, but it's usually not possible to see the process in progress. 2.) Par. 2, P1.: Sample 24 is "similar" to 1 and 23; a correlation is permissible. Sample 24 is quite unlike 13-15-74. Sample 28 does not correlate well with 13-15-24. 3.) Par. 3, P1.: Sorry! The first "105" described is merely a typo for 104; the slide is correctly labelled and is indeed what was submitted as 104. 4.) Par. 4, P1.: Don't worry too much about 107 being Laramide. Note that the description says "feebly ordered" when referring to microline. 5.) Par. 5, P1.: No doubt that 104 = 110 but neither correlates with 116-132-137-143. 6.) Par. 1, P2.: I cannot correlate 49 because of the heavy epidotization. 7.) Par. 2, P2.: No, you're wrong. The plagioclase is pink; note that it is oligoclase (partially albitized). I stand by my description, and you should not correlate it (67) with 52-68-69.

This covers the points in your letter. Below are skeletal notes prepared in response to you submittal sheet of Jan. 29. Where your questions have elicited no response it signifies that I could not answer or had no opinion. I list my comments beside the sample number.

10.) 10=16 13.) 13=15 16.) similar to 10 17.) 17=33; 34 too leucocratic 21.) not = 13, 15; close to 71 22.) probably a synmetamorphic shear zone 30.) 30=31 32.) 32 similar to 77, not like 111 33.) 33 similar to 18, not like 34 35.) very similar to 34 66.) 66 originally hornblendic, unlike 64 68.) not like 52; 68 originally more basic and porphyritic 69.) 68=69 70.) 21=71; correlation with 70, 72 O.K. 99.) 99 probably = 101 113.) uncertain; just a gneiss 161.) 161 heavily sheared; cannot correlate with 11, 16, 38, 73, 77; it is similar to 32, 158 190.) does not = 191 or 195 195.) 195 not = 191 196.) similar to 195

I hope these c mments help some. Although you ask for sample return, just - be safe, I will hold them a bit until you're sure that there are no further questions.

Sincerely,

Sidney A. Williams

SAW:bj Loghry-Heinrichs Joint Venture P.O. Box 5964 Tucson, Arizona 85703

July 3, 1980

Dr. Sidney A. Williams P.O. Box 872 .Douglas, AZ 85607

Dear Sid:

I have finally read all of your thin section reports and like what I see.

Most of the Precambrian granitic plutons contain microcline phenocrysts and grains, but samples 24, 28, 49, 104(first 105) and 110 contain orthoclase. Sample 24 (Burch Peak or Aquarius batholith or another pluton?), 104 (Holy Moses pluton) and 105 (Holy Moses pluton) are certainly Precambrian. No. 49 is highly altered, could be Precambrian or Mesozoic. Sample 23 is a phase of the Pre- cambrian Aquarius batholith and you not that "former orthoclase is represented by fresh, finely twinned microcline". Is this a common occurrence? Could the microcline in all of our microcline granites and quartz monzonites be metamorphosed from orthoclase? We didn't do enough geologic mapping to tie sample 24 to the Burch Peak batholith. It has 10-20% K-feldspar phenocrysts, is definitely a quartz monzonite, not a tonalite, is definitely an intrusive rock. I assumed its coarse blue-gray phenocrysts were microcline and am surprised to find your thin section shows 4% orthoclase. Perhaps another, more representative thin section is needed. Can you correlate No.24 with the Aquarius batholith (Nos. 1 and 23) or with the Burch Peak batholith (Nos. 13, 15, and 74), or, is it another pluton? Does No.28 correlate with Nos. 13, 15, and 24? Your report shows two No. 105 samples. No. 105 is a very light gray plagioclase pegmatite cutting the Holy Moses pluton - a coarsely porphyritic biotite quartz monzonite No. 104, so the real 105 is the second one on the list - the diorite. I presume the first 105 is actually 104, but I wish to be certain it. is not 107, 110 or 116. Our No. 104 is a coarsely porphyritic quartz monzonite(?) with large K-feldspar phenocrysts, so your "equigranular" thin section is probably not representative.

No. 107 is leucocratic, fine to medium-grained, well-altered, pyritic, next to a pyrite mineralized breccia pipe, and contains fragments of dark Mesozoic(?) hornblende diorite porphyry, so I suggested it is Laramide, but its microcline composition belies this. It does not seem to be related to 104 or any of the other Holy Moses pluton rocks (110, 116, 132, 137, 143). I suppose it could be one of those leucocratic gneisses like we sampled in the Cerbats - Nos.210,'220, and 252.

Do you feel that 104 (first 105) and 110, orthoclase quartz monzonites correlate with other Holy Moses pluton rocks - 116, 132, 137, 143? P. 0. Box 872 9 Douglas, AZ 85607 aco AA 870 March 10, 1980 UX s a 2 92.07 pg AREA 60

Dr. James D. Loghry Loghry-Heinrichs Joint Venture P. 0. Box 5964 Tucson, AZ 85703

Dear Jim:

Enclosed you will find a third batch of petrographic descriptons. These are the last of them, and you should already have received two other batches of descriptions. A total of 101 samples has been studied; 109 were submitted but 8 were duplicates. These were thin sectioned before this was discovered. My sample 6 (sent earlier) should be relabeled 9, incidentally.

I have prepared notes to answer questions (mainly about correlations) you ask in your sample submittal sheets. I will retain these notes for future discussion or, if you prefer, will write them up. Let me know your preference.

Correlations and rock names may suffer in some cases because the coarse grain size of many rocks makes a thin section a statistically poor sample.

Generally, rocks with orthoclase correlate well with the ages you indicate as post-Precambrian. Rocks with microcline tend to be your older ones. You will note one possible problem with #28.

I have not mentioned probable origin of most rocks because the grade of metamorphism and degree of recrystallization preclude this. I suspect, however, that the vast majority of Precambrian rocks including gneissose ones, are syntectonic "granites". Incidentally, the rock names I use are based on Johannsen's classification.

There is a positive correlation between radioactivity and the presence of fluorite and allanite. The remarkable persistence of both minerals in such a wide variety of rock types suggests remarkable mobility of RE-U-Th-F during reginal metamorphism. Usually the allanite is partly or most metamici; it is clearly U-Th bearing and nearby minerals show radiation damage. By contrast, zircon and monazite (the latter rare)do not show evidence of radioactivity. The zircons differ in habit from one rock type to another and do not show suspicious indications of "mobility" shown by allanite (and monazite). There is a clear negative correlation between hornblende and radioactivity I think. Even though accessories such as sphene and apatite may be abundant in such rocks that carry hornblende, they seem unfavorable for development of allanite.

Although these rocks carry fluorite like U-rich rocks in other areas do, they differ in important characteristics and seem unlikely to provide a mineable unit comparable to (e.g.) Rossing in S. W. Africa. Your rocks have allanite whereas Rossing has xenotime, monazite, U-rich zircon. The differ- ence seems significant to me.

There is little question, however, that these could represent source rocks for younger deposits.

Please feel free to contact me for any further clarifications.

Sincerely,

Sidney A. Williams

SAW:bj encls: m s%4 TUCSON, ARIZONA 85703 Phone: (AREA 602) 623.0578 The rock is a quartz monzonite with large, squarish and finely twinned plagioclase subhedra. The matrix is equally coarse but granular quartz and microcline. Plagioclase may be myrmekitic where it a4 joins quartz. It shows frilly borders against microcline. Foliae of thick biotite books lie on grain boundaries with hornblende and accessory minerals. Augite was noted only as a protected relict in plagioclase. Alteration of the rock has been negligible and deuteric only. The cores of plagioclase may be sericitized or sausseritized while all other minerals remain fresh. Original volume percentages of minerals are estimated as: quartz 17%, microcline 15%, plagioclase 57%, biotite 7%, hornblende 3%, magnetite 0.5%, sphene 0.5%, augite tr..

The rock is a quartz monzonite, a coarse grained equigranular rock. Plagioclase and microcline tend to be equant, quartz more interstitial in character. Microcline is perthitic and may host corroded plagioclase grains. Rarely is plagioclase myrmekitic against quartz. Biotite occurs sparingly as tablets lying along grain boundaries with accessory minerals. Deuteric alteration of the rock has been mild. Most biotite is fresh but some books are penninized. Plagioclase is occasionally sericitized or hosts a grain of epidote. Frequently this alteration occurs where the plagioclase is in contact with magnetite. Original minerals are present in the following estimated amounts: quartz 28%, microcline 39%, plagioclase 27%, biotite 4%, magnetite l%, apatite 0.5%, sphene 0.5%, zircon tr..

The original rock was an andesite with a sprinkling of large subhedral plagioclase phenocrysts. These occur in a trachytic matrix of plagioclase laths and hornblende prisms showing chaotic flowage align- ments. There may have been a few vesicles in the matrix. Mild epizonal metamorphism has not destroyed the original textures. Plagioclase is more albitic and is evenly stippled with flecks of sericite and epidote. Hornblende is entirely altered to pennine and patches of fine grained to fibrous epidote. Clear quartz patches in the matrix could represent vesicle fillings, but there are also a few fuzzy crystalloblasts beginning to develop in the matrix. An estimate of the rock mode is: plagioclase 62%, quartz 3%, epidote 18%6, pennine 9%, sericite 4%, sphene 2%, magnetite 2%, apatite tr.. 4

The rock is a granitic gneiss with very coarse, slightly perthitic microcline. Somewhat smaller and more equant plagioclase grains are present, and quartz tends to occur in thick lenses of strained grains that give the rock a crude banding. Biotite books are deformed and tend to be drawn out along grain boundaries. Muscovite books seem younger. They may lie across the foliation, derived either from biotite or plagioclase. Later alteration effects have been mild. Sericite and rare epidote occur in most plagioclase. Crackled zones along grain boundaries may contain traces of fluorite. Mineral percentages are estimated as: quartz 16%, microcline 50%, plagioclase 22%, biotite 6%, muscovite 5%, epidote 0.5%, fluorite 0.5%, leucoxene tr., apatite tr., zircon tr., tourmaline tr..

The rock is a gneiss of quartz monzonitic composition, probably in fact meta-igneous. Both plagioclase and microcline occur as very large, equant anhedra. These are thickly scattered in a matrix of quartz grains that interlock in jigsaw-puzzle fashion and seem to flow around the feldspars. Where feldspars are crushed at their margins they have recrystallized in complex intergrowths with quartz. Sheaves of biotite plates and hornblende prisms lie on grain boundaries, obeying a crude foliation. Accessories cluster with the mafites. Epidote beads are usually scattered in plagioclase and seem of prograde age. The estimated mineral percentages are: quartz 25%, microcline 29%, plagioclase 22%, biotite 12%, hornblende 8%, epidote 3%, sphene 0.5%, apatite 0.5%.

The rock is an alaskite with lath-like subhedra of plagioclase occurring sparingly and in loose clusters. They are embedded in a matrix of distinctly coarse quartz and microcline. The microcline is slightly perthitic but shows little corrosion of plagioclase inclusions. Thick skeletal books of muscovite occur on grain boundaries. These seem of late magmatic age, and some host remnants of former biotite. Additionally, coarse sericite stippled plagioclase. It may occur with fluorite. Mineral percentages are estimated as: quartz 38%, microcline 34%, plagioclase 10%, muscovite 16%, magnetite 1%, biotite 0.5%, zircon tr., fluorite tr.. 7

The rock is a gneiss of quartz monzonite composition. Plagio- clase grains are crudely lath-like, tending to lie with long axes parallel to the foliation. The interstices are filled with equally coarse quartz and microcline. Plagioclase may be myrmekitic against quartz and show corrosion by microcline. Thick books of biotite lie along grain boundaries and give the rock its foliation. Muscovite appears to be younger. I t may lie in parallel with, and appear to replace biotite, but skeletal books were also noted developing in plagioclase. Accessory zircon is fairly common. Grains tend to nestle in biotite. The estimated mineral percentages are as follows: quartz 18%, plagioclase 36%, biotite 14%, muscovite 6%, microcline 25%, zircon 0.5%.

The rock is a quartz monzonite with coarse, granular quartz, microcline, and plagioclase. Thick biotite books and magnetite grains lie on grain boundaries. There has been considerable intergranular crushing throughout the rock. This has been healed by recrystallization but as a result the quartz and feldspars usually show complex myrmekitic intergrowths. Biotite caught up in crushed zones is mimetically foliated on grain boundaries and the crystals are much smaller than those in protected areas. Traces of epidote occur in plagioclase, usually on the margins of crystals. An estimate of the rock mode is: quartz 18%, microcline 44%, plagioclase 31%, biotite 5 %, magnetite 0.5%, epidote 0.5%, sericite 0.5%, zircon tr..

The rock is a quartz monzonite with equant, finely twinned plagioclase anhedra scattered in an equally coarse granular matrix of quartz and microcline. Thick, skeletal books of biotite lie on grain boundaries and show a crude foliation despite the granular texture of the rock. Grains of Fe-rich epidote cluster with biotite and were also noted replacing some plagioclase grains. Others are merely clouded with sausserite. Traces of fluorite occur on grain boundaries, seeming to corrode plagioclase. Mineral percentages are estimated as: quartz 16%, microcline 29%, plagtoclase 33%, biotite 17%, sphene 1%, epidote 2%, apatite 0.5%, zircon O.5%, fluorite tr., sericite 0.5%. 12

The rock is a gneiss of quartz monzonite composition. It carries a few large augen of plagioclase and microcline. These tend toward oval shapes and may show strain. They lie in a matrix of crushed to ribbon-like quartz and feldspars showing flowage around the augen. Both biotite and fine grained muscovite tend to lie on grain boundaries in the matrix. Although they are foliated the individual flakes may be drawn out or crumpled due to the severe mechanical deformation. Fluorite is a common accessory mineral. It usually lies on grain boundaries in the matrix, preferentially replacing crushed plagioclase but some was noted corroding feldspar augen. Minerals are preseot in.the following estimated amounts: quartz 25%, microcline 26%, plagioclase 35%, muscovite 5%, biotite 6%, fluorite 2%, zircon 0.5%.

The rock is a granitic gneiss with very large eyes of perthitic microcline. Smaller plagioclase and quartz grains tend to be embedded in and at the margins of these large crystals. Large biotite books occur in foliae that wind around grain boundaries. Remnants of hornblende occur in these foliae but more frequently they have disappeared, leaving clusters of granular epidote. Epidote also attacks plagioclase vigorously near biotite-rich foliae. Accessory minerals such as sphene and magnetite are common with biotite. Also, one crystal of nearly metamict allanite was observed. Volume percentages of minerals are estimated as: quartz 12%, microcline 51%, plagioclase 10%, biotite 14%, hornblende 2%, sphene 2%, magnetite 1%, epidote 6%, allanite 0.5%, pennine 0.5%, apatite 0.5%, sericite tr..

The rock is a diabase composed mainly of long slender plagioclase laths in random array with coarse augite filling the interstices. In places the texture is ophitic. Olivine subhedra may occur in the augite; they show a peculiar schiller structure. In a few cases later hornblende and biotite mantle the augite. Magnetite is a common accessory, not only as discrete crystals but as late magmatic rims on olivine. The rock shows only deuteric alteration. Much of the olivine is replaced by a scaly paste of bowlingite. Fibrous uralite attacks both augite and hornblende. Prochlore may corrode biotite; it also fills irregular seams cutting the fabric. Original mineral percentages are estimated as: plagioclase 51%, augite 27%, olivine 11%, magnetite 7%, biotite 3%, hornblende 1%. 15

The rock is a gneiss of quartz monzonite composition. There are numerous large augen of microcline and plagioclase, a few with both feldspars. These are set in a matrix of crushed feldspars and quartz that "flows" around them. Healing has been poor in the matrix so that the quartz and feldspars may have a cherty texture. Biotite lies on the matrix as thick foliae along with apatite and magnetite that is mantled with sphene. Coarse granular epidote with the biotite may derive from former hornblende in part. Tiny epidote beads and shreds of sericite also cloud the plagioclase. Original minerals are present in the following estimated amounts: quartz 14%, microcl ine 34%, plagioclase 38%, biotite 11%, magnetite 1%, sphene 1%, apatite 0.5%.

The rock is a gneiss of granitic composition. A few plagioclase grains are present. They tend to an oval shape, lying in an equally coarse granular matrix of quartz and microcline. Biotite books lie in strings along grain boundaries and are moderately well foliated. Grain boundaries have been granulated slightly and some sericitization of both plagioclase and biotite has occurred in such disturbed areas. Minor amounts of supergene opal (devitrified) also cement crackled grain boundaries. The estimated original mineral percentages are: quartz 28%, microcline 50%, plagioclase 13%, biotite 8%, magnetite 0.5%, zircon tr., sphene tr..

The rock is a quartz monzonite with large equant anhedra of plagioclase and microcline. The latter mineral frequently hosts stringers and corroded remnants of plagioclase. Coarse granular quartz occurs in pods or segregations. Biotite books lie along grain boundaries in clusters with an unusualy abundance of accessory minerals, particularly very coarse sphene. Near the biotite pods, plagioclase is prone to be flecked with sericite or host peculiar skeletal crystals of epidote. Otherwise the rock is quite fresh. An estimate of the rock mode is: quartz 14%, microcline 25%, plagioclase 45%, biotite 10%, sphene 3%, magnetite 2%, apatite 0.5%, zircon tr., sericite 0.5%, epidote tr.. - 0 .: 18

The original rock was a quartz monzonite with squarish plagioclase subhedra set in equally coarse, granular quartz and microcline. Very thick biotite books clustered on grain boundaries were the major mafite. Epi-mesozonal alteration of the rock has been strong. Plagioclase is pseudomorphosed by a scaly mush of fine grained muscovite. Microcline alters to muscovite also, but the flakes are thickly scattered in a quartz base. Biotite books are altered in situ to coarse clinochlore along with remnants of corroded epidote and leucoxene. Mineral percentages are estimated as: quartz 42%, muscovite 44%, clinochlore 10%, leucoxene 2%, apatite 0.5%, zircon tr., pyrite tr., sphene tr., epidote 0.5%.

The rock is a granite composed mainly of very large equant microcline anhedra. Quartz is nearly as coarse, and it tends to occur in very large clusters. Plagioclase tends to lie along microcline grain boundaries and is notably myrmekitic. Biotite books occur in thin foliage that. run through the fabric, seemingly following zones of mild granulation. Accessories such as sphene and magnetite are also concentrated in these foliage. With the exception of weak sericitization of plagioclase the rock remains perfectly fresh. The estimated mineral percentages are: quartz 18%, microcline 69%, plagioclase 8%, biotite 3%, magnetite 1%, sphene 0.5%, apatite tr., sericite o0.5%.

The rock is a biotite schist of uncertain ultimate origin. It consists of biotite mainly, a jumble of books that lie randomly yet seem to show a crude overall foliation. Some augen of finely twinned plagioclase or of quartz occur, but both minerals also occur with fine grained microcline in the interstices. While microcline remains fresh, plagioclase shows mild sericitization. An unusual feature of the rock is the abundance of small zircon prisms and monazite. These minerals stipple the biotite liberally, each grain surrounded by a pleochroic halo. Estimated mineral percentages are as follows: biotite 63%, microcline 8%, zircon 4%, monazite 1%, quartz 11%, plagioclase 12%, sericite 1%. The original rock appears to have been an equigranular quartz monzonite. It carried squarish subhedra of plagioclase in an equally coarse matrix of quartz and orthoclase. Thick biotite books cluster with accessory minerals. The rock has been mesozonally metamorphosed but not substantially changed by the process. Biotite books are now crudely foliated along grain boundaries. They are often host to granular epidote of metamorphic age, and they show little retrogression to pennine. Coarse epidote grains occur sparingly in plagioclase which is dusted with very fine grained sausserite. Former orthoclase is represented by fresh, finely twinned microcline. Original mineral percentages are estimated as: quartz 20%, orthoclase 38%, plagioclase 26%, biotite 10%, magnetite 3%, sphene 1%, apatite 1%, zircon tr..

The rock is of tonalitic composition, a gneissose rock. It consists mainly of plagioclase and biotite. Plagioclase occurs as finely twinned, slightly strained grains of oval outline. Foliae of large biotite books wrap around the plagioclase grains. These foliae host large hornblende (ferrohastingsite) crystalloblasts or clusters of crystals that are riddled with coarse inclusions of quartz and plagioclase. Accessories such as magnetite and sphene are also common in the biotite. A few large grains of orthoclase occur and these are mantled with thick coronas of myrmekitic plagioclase. The rock appears to be a meta-igneous one. It shows no retrograde effects. Mineral percentages are estimated as: quartz 16%, orthoclase 4%, plagioclase 38%, biotite 32%, hornblende 6%, magnetite 2%, sphene 1%,

. )'t c5.JG d ~ apatite 1%. b

The rock is a granodiorite composed mainly of equant but anhedral, finely twinned plagioclase grains. These are closely crowded in a usually finer grained granular matrix of quartz and orthoclase. Plagio- clase often shows myrmekitic rims against the matrix. Thick biotite books are scattered in the matrix, loosely clustered with accessories such as magnetite and sphene. The rock is quite fresh, showing only weak deuteric alteration. Plagioclase is weakly sausseritized, especially along cracks or cleavages adn in crystal cores. Penninization (with some sericite) of biotite has just begun. Original minerals are present in the following estimated amounts: quartz 24%, orthoclase 14%, plagioclase 48%, biotite o10%, magnetite 2%, sphene 1% , apatite 0.5%. 26

The rock is a quartz monzonite. Originally it carried squarish plagioclase subhedra in an equally coarse matrix of quartz and orthoclase. Clusters of large biotite books also occurred in the matrix. The rock has been mildly fractured and mesozonally greisenized. Crush zones are healed mainly by recrystallization, now mainly carrying granular orthoclase and coarse quartz. Biotite has been totally penninized but the pennine now is streaked with muscovite. Coarse muscovite has also begun to form in plagioclase which also hosts blotches of calcite and may be corroded by fluorite. Traces of oxidized pyrite were noted along fractures. Volume percentages of minerals are estimated as: quartz 10%, orthoclase 43%, plagioclase 30%, muscovite 6%, calcite 3%, pennine 5%, apatite 1%, fluorite 0.5%, zircon tr., leucoxene 0.5%, goethite tr..

The rock is a quartz monzonite. Quartz and plagioclase of somewhat granular nature comprise much of the rock. Grain boundaries may be filled with fine granular quartz and feldspars as well as clusters of small biotite flakes. The biotite sometimes shows synneusis structure along grain boundaries. Orthoclase occurs as large crystalloblasts. These may host inclusions of quartz and plagioclase; the latter mineral does not appear to be corroded. Epizonal deuteric alteration has been mild. Plagioclase is uniformly dusted with flecks of sericite whereas orthoclase remains fresh. Biotite is mostly altered to pennine and accessory leucoxene. Original mineral percentages are estimated as: quartz 26%, orthoclase 29%, plagioclase 35%, biotite 8%, magnetite 1%, sphene 0.5%, apatite 0.5%, zircon tr..

The rock is a granodiorite carrying stubby laths of finely twinned plagioclase in abundance. These lie in an equally coarse matrix of quartz and orthoclase. The orthoclase shows evidence of weak ordering. Thick biotite books lie on grain boundaries. There are also clusters of finer grained biotite, a late magmatic replacement product of hornblende, and some clusters contain relicts of hornblende. Accessory minerals such as magnetite and sphene tend to cluster with the mafites. Weak epizonal alteration has only been deuteric. Biotite is streaked with pennine, the alteration about half complete. Hornblende may also be penninized. Plagioclase is occasionally and irregularly attacked by sausserite. Original mineral percentages are estimated as: quartz 25%, orthoclase 18%, plagioclase 43%, biotite 10%, hornblende 1%, magnetite 1%, sphene 1%, apatite 0.5%, zircon tr.. 30

The rock is a quartz monzonite carrying large, squarish plagioclase subhedra in a matrix of granular quartz. Microcline occurs as large crystalloblasts that host corroded plagioclase remnants. Biotite books are clustered on grain boundaries. The rock has suffered modest deformation. Quartz has broken down to a jigsaw-puzzle aggregate of strained grains that flow around the more resistant feldspars. Biotite foliae lie in the quartz, giving the rock a distinct greissosity. Biotite remains fresh but plagioclase is sprinkled with sericite, epidote, and occasionally corroded by fluorite. Fluorite was also noted along hairline cracks with traces of a nearly metamict mineral, probably allanite originally. Original estimated mineral percentages are: quartz 35%, microcline 21%, plagioclase 27%, biotite 14%, magnetite 2%, apatite 0.5%, zircon tr..

The rock is a quartz monzonite similar to 30 but more equigranular. Finely twinned plagioclase, although of crudely lath-like habit, is rounded in outline, entering into a nearly granular texture with quartz and microcline. Thick skeletal biotite books tend to cluster on grain boundaries with accessories. Alteration of the rock has been mild. Plagioclase is stippled with shreds of sericite or even small plates of muscovite. Fluorite may attack the plagioclase. It also occurs along ill-defined hairline cracks. Coarse prisms of a nearly metamict mineral, probably once allanite, tend to occur with the biotite. Original mineral percentages are estimated as: quartz 24%, microcline 36%, plagioclase 29%, biotite 10%, magnetite tr., apatite tr...

The original rock was a granodiorite porphyry with scattered subhedral phenocrysts of plagioclase. There may have been orthoclase (now microcline) phenocrysts as well. The matrix was granular quartz and orthoclase hosting biotite books. The rock has been mildly deformed with little recrystallization. Although quartz remains granular and unstrained, biotite has been disaggregated and drawn out along grain boundaries.with quartz-feld- sapr rubble, giving the rock a crudely foliated appearance. Accessories with the biotite include sphene, apatite, and traces of a metamict mineral. Plagioclase in the rubble tends to alter to sericite and ept- dote while undisturbed phenocrysts show only weak sericitization. Original mineral percentages are estimated as follows: quartz 25%, microcline 18%, plagioclase 49%, biotite 6%, sphene 0.5%, apatite 0.5%, magnetite 1%. 33

The rock is a quartz monzonite carrying very large but anhedral, even irregular grains of microcline and plagioclase. Quartz occupying the interstitial areas is finer grained and granular, showing some strain. Clusters of biotite books lie on grain boundaries with accessory minerals and show synneusis structure. Epizonal alteration has been mild. Sausserite clouds the cores of some plagioclase crystals. Bio- tite may be altered to sericite, especially where it was fine grained, and the liberated iron oxides stain the surrounding fabric. Fluorite occurs along hairline fractures or corrodes plagioclase. It seems related to the presence of nearly metamict allanite with the biotite. Original mineral percentages are estimated as: quartz 26%, microcline 35%, plagioclase 28%, biotite 9%, magnetite 1%, apatite 0.5%, sphene 0.5%.

The rock is a granite composed mainly of microcline and less plagioclase. The two minerals are very coarse grained and may enter into peculiar intergrowths. Somewhat lath-like plagioclase subhedra also occur, frequently as inclusions in microcline. Quartz forms clusters of jigsaw-puzzle texture in the interstices and biotite books occasionally lie on grain boundaries. The rock is quite fresh with only traces of sericite in the plagioclase. Accessory minerals, including fluorite, monazite, etc lie on grain boundaries or along subtle hairline cracks that penetrate the fabric. Some Fe-rich epidote also occurs on grain boundaries, evidently derived from biotite. An estimate of the rock mode is: quartz 6%, microcline 67%, plagioclase 22%, sericite 0.5%, biotite 2%, magnetite 1%, monazite 0.5%, allanite tr., fluorite tr., zircon tr., apatite tr., epidote tr..

The rock is a granite composed mainly of very coarse anhedra of microcline. Plagioclase may occur as rounded inclusions within it or as a pebbly aggregate along grain boundaries. Other interstitial areas are filled with coarse granular quartz or clusters of shreddy biotite books. Alteration has been weak and only deuteric. Traces of sericite cloud plagioclase, and cleavage cracks in microcline may be filmed with hematite. Biotite has decayed somewhat to fine, granular Fe-rich epidote and shows only weak or incipient penninization. A trace of allanite was noted; it has not become noticeably metamict. Volume percentages of minerals are estimated as: quartz 11%, plagioclase 12%, microcline 71%, biotite 2%, allanite 0.5%, magnetite 0.5%, sericite 0.5%, epidote 1%, apatite 0.5%, leucoxene tr., hematite 0.5%. 37

The rock is a gneissose one of granodiorite composition, doubtless meta-igneous. It consists mainly of plagioclase. Large grains of this mineral are equant but anhedral. Occasional lenses of strained quartz and less microcline occupy the interstices. Plagioclase may be myrmekitic against the matrix, or host microcline beads along its borders. Biotite and hornblende (ferrohastingsite) from discontinuous foliae along grain boundaries. The hornblende tends to be poikiloblastic. Retrograde effects have been minor. Plagioclase cores may host fine grained sausserite. Epidote grains also cluster with mafites which they appear to be replacing. Minerals are present in the following estimated amounts: quartz 9%, microcline 5%, plagioclase 56%, hornblende 9%, biotite 16%, sericite 2 , epidote 1%, sphene 1%, apatite 0.5%, zircon tr..

The original rock may have been a quartz monzonite but this is uncertain due to later metamorphism. It now consists of quartz, microcline, and plagioclase in roughly equal proportion. Plagioclase anhedra tend to cluster, their exterior borders sutured or embayed against an equally coarse matrix of somewhat grand lar quartz and microcline. Seams of finer grained quartz-microcline winding through the fabric represent zones of rupture healed by recrystallization. A few muscovite books occur, seeming to replace plagioclase. Sericite is also present, stippling plagioclase and, with earthy, goethite- stained leucoxene replacing all former biotite. Volume percentages of minerals are estimated as: quartz 32%, microcline 33%, plagioclase 24%, sericite/muscovite 8%, leucoxene 3%, apatite tr..

The rock is a granodiorite composed primarily of plagioclase. Thick, crudely rectangular laths of plagioclase are randomly and closely crowded in a finer grained granular matrix of quartz and orthoclase (now microcline). Biotite books cluster on grain boundaries with accessory minerals such as sphene.and apatite. The rock is almost perfectly fresh. Shreds of sericite occur sparingly on cracks or cleavages in plagioclase. Some crystal cores are lightly dusted with sausserite. Peniniza- tion or mere bleaching of biotite has just begun. Original mineral percentages are estimated as: quartz 10%, orthoclase 8%, plagioclase 75%, biotite 6%, magnetite 0.5%, apatite tr., sphene tr. 43

The original rock was a quartz monzonite carrying squarish plagioclase subhedra in an equally coarse matrix of quartz and orthoclase. Thick biotite books were once common on grain boundaries. The rock has suffered strong alteration. Orthoclase has grown strongly, comprising much of the rock as an aggregate of large, interlocking grains. Plagioclase occurs as relicts in the orthoclase; these are now replaced by fine scaly kaolin and sericite. Where orthoclase growth is strongest it has begun to replace quartz, advancing into that mineral as skeletal but euhedral grains. Biotite is replaced by sericite, kaolin, and earthy goethite. Goethite also replaces pyrite that once occurred along hairline fractures. Some plagioclase pseudomorphs host irregular patches of fluorite. The estimated mineral percentages are: quartz 20%, orthoclase 48%, sericite 22%, kaolin 5%, goethite 3%, leucoxene l%, apatite 0.5%, fluorite 0.5%, zircon tr..

The original rock was a coarse grained, equigranular quartz monzonite. Plagioclase appears to have occurred as subhedra in granular quartz and orthoclase. Thick biotite books lay randomly on grain boundaries. Rock textures have been considerably modified by epizonal metamorph ism. Plagioclase has been almost totally replaced by clusters of stubby epidote prisms and shreddy interstitial sericite but a few relicts do survive. Similar alteration has affected orthoclase although to a lesser degree. Coarser muscovite with shreds of hydrobiotite along cleavage planes replaces the biotite. Matrix quartz has grown some, tending to envelop grains of epidote. An estimate of the rock mode is: quartz 21%, orthoclase 6%, epidote 40%, sericite 24%, hydrobiotite 6%, sphene/leucoxene 2%, plagioclase 1%.

The original rock may have been a quartz monzonite. Little remains of its textures except to note that coarse biotite books were common in clusters on grain boundaries between the quartz and feldspars. Epizonal silicification has been quite strong. Coarse quartz intergrown in jigsaw puzzle fashion comprises much of the rock. It has formed mainly at the expense of plagioclase. Although a few remnants of albite survive, most former plagioclase is represented by only a scattering of sericite shreds in the quartz. Microcline is only slightly invaded by quartz. Biotite has resisted silicification, instead altering to pennine and leucoxene, then tending to corrode to sericite. Mineral percentages are estimated as: quartz 57%, microcline 24%, sericite 4%, pennine 10%, leucoxene 2%, apatite 0.5%, zircon tr., albite 2%. 52

The rock is a quartz monzonite. Large equant anhedra of plagioclase are set in an equally coarse granular matrix of quartz and microcline. Some microcline grains are very large, however, hosting grains of quartz. Thick biotite books occur in clusters along grain boundaries. Associated minerals here include hornblende (ferrohastingsite), magnetite, and very coarse and unusually abundant sphene. Epizonal deuteric alteration has been negligible. Plagioclase is occasionally dusted with sausserite and traces of calcite were observed in microcline. Biotite remains wholly fresh. One large, partly metamict allanite grain mantled with epidote was noted. Original estimated mineral percentages are: quartz 24%, microcline 29%, plagioclase 20%, biotite 18%, hornblende 5%, sphene 3%, apatite 0.5%, magnetite 0.5%.

The rock is a quartz monzonite in which quartz, microcline and plagioclase tend to be granular although some plagioclase grains are lath-like. Some microcline grains are perthitic and show late growth, hostings rings of quartz beads. Thick biotite books cluster on grain boundaries with magnetite and other accessories. Deuteric alteration has been mild. Plagioclase is flecked with sericite, epidote, rare calcite, and occasional small blotches of fluorite. Fluorite also occurs along grain boundaries. Biotite is sometimes streaked with pennine. Original mineral percentages are estimated as: quartz 24%, microcline 38%, plagioclase 23%, biotite 13%, magnetite l%, sphene 0.5%, apatite 0.5%, zircon tr..

The rock is a quartz monzonite in which plagioclase grains are equant and finely twinned but of highly variable size. The matrix (quartz and microcline) is also of irregular grain size although of granular nature. Some microcline grains host rings of quartz beads. Biotite books are small, occurring in clusters with magnetite and sphene. Epizonal deuteric alteration has been weak. Plagioclase is only occasionally dusted with sericite. Traces of pennine have begun to attack biotite. One nearly metamict grain of allanite was observed. Fluorite beads occur in plagioclase (even very fresh crystals) but are rare and of minute size. Original minerals are present in the following estimated amounts: quartz 20%, microcline 40%, plagioclase 32%, biotite 6%, magnetite 1%, sphene l%, apatite tr.. 55

The rock is a quartz monzonite, originally carrying squarish plagioclase subhedra in am equally coarse, granular matrix of quartz and microcline. Small biotite books were clustered in the interstices with magnetite and otehr accessories. The rock has been crushed and recrystallized in the epizone. Crush zones cutting the fabric carry anguajr chips of quartz and feldspars cemented by granular epidote. Plagioclase in these areas is albitized and shows degenerate twinning. Most biotite appears to have been drawn out in these zones, reappearing as clusters of pennine scales. Magnetite is oxidized to hematite which stains the fabric. Original estimated mineral percentages are: quartz 23%, microcline 45%, plagioclase 25%, biotite 5%, magnetite 1%, sphene 0.5%, apatite tr..

The rock is a gneiss of granitic composition, perhaps an acid igneous rock originally. Quartz and plagioclase tend to be granular, with microcline filling interstitial areas. Microcline also occurs as larger rectangular crystalloblasts that frequently host beads of quartz. Biotite flakes lie on grain boundaries and show a surprisingly good foliation considering the granular texture of the other miners. Small amounts of accessories such as sphene and partially metamict allanite cluster with the biotite. Retrograde effects have been weak. Pennine is very rare in biotite. Plagioclase is lightly and uniformly stippled with shreddy sericite. Volume percentages of minerals are estimated as: quartz 25%, microcline 36 x., plagioclase 14%, biotite 20%, sericite 3%, sphene 0.5%, apatite 0.5%, magnetite 0.5%, allanite 0.5%.

The rock is a granite of coarse grain size. Plagioclase crystals are oval to lath-like, lying randomly in a matrix of very large microcline anhedra and interstitial quartz showing jigsaw-puzzle textures. Microcline may host plagioclase which is then apt to be albitic, showing degenerate twinning. Biotite books lie along grain boundaries with unusually coarse grains of accessory minerals. Epizonal deuteric alteration has been mild. Plagioclase is usually lightly dusted with sericite whereas biotite remains fresh. Traces of fluorite and hematite were also noted replacing plagioclase. Feldspars may be sericitized near biotite when radioactive minerals are in the clusters (these minerals now altered to earthy leucoxene and hematite). Original mineral percentages are estimated as: quartz 20%, microcline 48%, plagioclase 20%, biotite 8%, magnetite 2%, sphene 0.5%, apatite 0.5%, zircon tr., monazite tr.. 64

The rock is a gneiss of granodioritic composition, very likely meta-igneous. There are numerous lens-shaped pods of coarse plagioclase grains. Much finer grained quartz and microcline tend to flow around the pods. The larger grains show incipient disaggregation at their boundaries with the matrix. Skeletal crystals of biotite and minor hornblende occur in the matrix, aligned to the direction of shearing. Accessories such as magnetite and sphene cluster with mafites, particularly in protected portions of the matrix. Retrograde effects have been minor. Mafites show some decay to pennine and granular epidote. Some plagioclase grains are clouded with sausserite. Mineral percentages are estimated as: quartz 16%, microcline 14%, plagioclase 58%, biotite 6%, hornblende 1%, epidote 2%, magnetite

0.5%, sphene 1%, apatite 1%.

The rock is a gneiss of granodioritic composition. Large thick laths of plagioclase are abundant, lying as resistant grains in a finer grained sheared matrix of strained quartz. Microcline occurs both as resistant grains and as an interstitial filigree in parts of the matrix. Skeletal epidote prisms and biotite books lie in the matrix and show little foliation. Where shearing has been strong in the matrix, foliae of muscovite occur, and epidote is apt to be granulated. Muscovite also occurs as thin plates lying randomly in plagioclase. Retrograde effects such as sausseritization of plagioclase and chloritization of biotite have been mild. Minerals are present in the following estimated amounts: quartz 21%, microcline 15%, plagioclase 45%, muscovite 4%, epidote 5%, biotite 7%, magnetite 0.5%, pennine 1%, apatite 0.5%, leucoxene 0.5%, calcite 0.5%.

Compositionally the rock is a tonalite. Plagioclase (now oligoclase) occurs in clusters of large anhedra that are finely twinned. Equally coarse quartz fills interstitial areas. Microcline is less common. It may en- close small grains of plagioclase which it does not appear to corrode. A few biotite books lie on grain boundaries. The rock has been deformed and most minerals show strain features. Plagioclase shows albitization and degenerate twinning. Biotite is replaced by shreddy sericite and accessory leucoxene. Traces of fluorite occur in interstices of the matrix. Volume percentages of minerals are estimated as: quartz 32%, microcline 6%, plagioclase 58%, sericite 2%, hematite 1%, leucoxene 0.5%, fluorite tr.. 68

The rock is a gneiss, perhaps a porphyritic quartz monzonite originally. There are large, finely twinned subhedra of plagioclase scattered in a finer grained matrix of quartz, microcline, and plagioclase. Microcline also fills cusp-like cavities within larger plagioclase grains. Hornblende (ferrohastingsite) and biotite lie in the matrix showing a crude foliation. They occur with an abundance of accessories such as sphene and magnetite. Retrograde effects have been slight. Mafites remain fresh but plagioclase may show patchy sericitization. The estimated mineral percentages are: quartz 8%, microcline 28%, plagioclase 39%, biotite 9%, hornblende 5%, sphene 3%, magnetite 2%, apatite 0.5%, sericite 4%.

The rock is a quartz monzonite. Microcline and plagioclase occur as very large grains with granular quartz confined to the interstices. Microcline contains ragged patches of plagioclase. Plagioclase may also be myrmekitic against the matrix. Inter- growths of very thick biotite books and hornblende are common in the matrix. These occur with an unusual abundance of accessory minerals, especially very coarse sphene. Also noted were a few grains of a metamict mineral, probably allanite originally. An estimate of the rock mode is: quartz 8%, microcline 29%, plagioclase 36%, biotite 16%, sphene 5%, hornblende 4%, magnetite 1%, apatite 0.5%, allanite tr., zircon tr..

The rock is a granite in which equant anhedra of microcline are very large. They host strings of plagioclase as well as larger, uncorroded plagioclase grains. There are also lenses of relatively coarse plagioclase and quartz in the interstices. Very thick books of biotite cluster on grain boundaries. These crystals may show feathery or frilly rims within adjoingij feldspars. Alteration has been weak. Plagioclase is lightly dusted with sericite, or carries sericite in cleavage planes. Accessory sphene has altered to leucoxene and biotite is stained with hematite along cleavages. Estimated mineral percentages are: quartz 15%, microcline 58%, plagioclase 18%, biotite 6%, sericite 2%, zircon tr., leucoxene 0.5%, apatite tr.. 71

The rock is a gneissose one with the composition of quartz monzonite. Clusters of very coarse, anhedral microcline and plagioclase are interspersed with lenses of strained quartz grains. In places, intergranular crushing has affected feldspars so they are separated by a network of granular zones. Some plagioclase grains are riddled with myrmekitic quartz. Thick biotite books are packed into the interstices with accessory minerals. Biotite books may even lie within adjoining plagioclase grains and are then highly skeletal. Shreddy sericite occurs with biotite as well as some interstitial fluorite. Mineral percentages are estimated as: quartz 22%, microcline 41%, plagioclase 24%, biotite 8%, sericite 2%, magnetite 1%, leucoxene 0.5%, apatite 1%, fluorite 0.5%.

The rock is a granite with very large microcline anhedra and pods of granular quartz dispersed in the interstices. Plagioclase occurs as discrete anhedra, also as inclusions and ragged stringers in the microcline. A few grains are coarsely myrmekitic. Biotite books lie along foliae on grain boundaries or in granulated zones cutting through feldspars. They occur with an abundance of accessories such as sphene and magnetite. Subsequent alteration has been weak. Although biotite remains fresh, palgioclase in contact with it shows modest alteration to epidote and sericite. Minerals are present in the following estimated amounts: quartz 26%, microcline 47%, plagioclase 22%, biotite 7%, sphene 2%, magnetite 20, apatite 0.5%, allanite tr., sericite 2%, hornblende 0.5%, epidote 0.5%.

Modally the rock is a granite. Quartz, microcline, and plagioclase grains are of various sizes and anhedral. Where finer grained, the texture seems to represent former granulation, healed well by recrystallization. Often in these areas plagioclase grains are riddled with myrmekitic quartz. Similarly, microcline shows peculiar "flame" perthite. Biotite books occur in clusters in the matrix. Accessories are few, but some zircon grains are present. Some show incipient metamictization and biotite is darkened and iron-stained. Retrograde sericitization of plagioclase has been negligible. Mineral percentages are estimated as: quartz 28%, microcline 44%, plagioclase 21%, biotite 6%, sericite 0.5%, zircon tr.. 74

The rock is a granitic one with a faintly gneissose structure. The fabric seen in the slide is dominated by a band or vein-form of coarse granular quartz of jigsaw-puzzle texture. Elsewhere, however, irregular anhedra of microcline and less plagioclase are abundant. The feldspars show frilly boundaries due to recrystallization of intergranular deformation. Biotite books lie on grain boundaries, clustered with accessory minerals. Plagioclase adjacent to biotite is apt to be clouded with sausserite. Volume percentages of minerals are estimated as: quartz 40%, microcline 40%, plagioclase 13%, biotite 4%, sphene 1%, zircon 0.5%, apatite 0.5%, epidote 0.5%, sericite 0.5%.

The rock seems to represent a shear zone in a gneiss of quartz monzonite composition. Both plagioclase and microcline occur as isolated crystals, or small clusters of them, set in a matrix of somewhat granular quartz that seems to flow around them or even cut through some crystals. Biotite crystals occur along thin slip planes parallel to banding, or in thicker, contorted bands in which individual plates are randomly oriented. Accessories such as sphene or partially metamict allanite occur exclusively with biotite; they may even be mantled by it. Later alteration has been weak, confined to mild sericitization of plagioclase and chloritization of biotite. The estimated mineral percentages are: quartz 46%, microcline 28%, plagioclase 18%, biotite 7%, sphene 0.5%, zircon tr., allanite tr., apatite tr..

The rock is a gneissose one of quartz monzonite composition. Microcline and plagioclase grains are equant, tending to interfinger on complex boundaries while quartz is more granular. Myrmekite is fairly common. The fabric is laces with anastamosing crush zones poorly healed by recrystallization. Biotite, however, is crudely foliated along grain boundaries, a preferred orientation that seems earlier than crushing. Accessories noted with biotite include traces of monazite and partly metamict zircon (malacon). Fluorite is present along grain boundaries, especially where crushing has occurred. It is dark purple in the vicinity of ma l'con. An estimate of the rock mode is: quartz 22%, microcline 28%, plagioclase 44%, biotite 3%, fluorite 1%, muscovite l%, malacon tr., apatite tr., monazite tr., magnetite 0.5%. 79

The rock is a quartz monzonite with relatively large, equant grains of plagioclase and microcline in about equal abundance. Where the two adjoin, microcline does not appear to corrode plagioclase. Quartz occupies pods or lenses composed of smaller grains that interlock in a jigsaw-puzzle fashion. Biotite books are clustered randomly, or even lie within feldspars. They occur with accessories such as magnetite and sphene. The rock shows a moderate degree of epizonal alteration. Plagioclase is quite heavily altered to coarse shreddy sericite and occasional beads of clinozoisite. Biotite streaks survive only occasionally within pennine pseudomorphs.

The rock is a granite composed mainly of coarse, irregular grains of microcline and less granular quartz. These minerals meet on frilly grain boundaries that often entrap beads of palgioclase; isolated large grains of plagioclase are rare. Biotite and hornblende are also trapped along grain boundaries with a variety of accessory minerals. Allanite is not uncommon but is usually metamict in part. Traces of fluorite were noted along grain boundaries. Mineral percentages are estimated as: quartz 20%, microcline 57%, plagioclase 6%, biotite 11%, hornblende 4%, magnetite 1%, allanite 0.5%, apatite tr., sphene tr., zircon tr., fluorite tr..

The rock is a gneissose granite composed mainly of coarse microcline grains. Large oval-shaped quartz grains lie in between. Plagioclase grains are small and highly myrmekitic. They lie on grain boundaries or even are packed into zones which transect microcline crystals. Thick foliae of biotite run parallel to quartz lenses or of plagioclase. band Accessory magnetite is strug out along these foliae and is typically mantled with sphene. Volume percentages of minerals are estimated as: quartz microcline 14%, 64%, plagioclase 12%, biotite 9%, allanite tr., sphene 0.5 magnetite 0.5%, apatite tr.. 83

The rock is a granite with very large microcline anhedra interspersed with lenses of coarse quartz. Both minerals have granulated, poorly healed borders and the quartz may be severely strained. Inter- granular crushing is quite evident in some places and most plagioclase occurs in these as frilly, myrmekitic grains. Bi title foliae also occur in these areas and may be considerably thinned along fractures. Accessory minerals cluster with biotite including muscovite and epidote derived from the decay of nearby plagioclase. Mineral percentages are estimated as: quartz 25%, microcline 46%, plagioclase 22%, biotite 4 %, muscovite 1%, epidote 1%, sphene 0.5%, apatite tr., zircon tr..

The rock is an acid quartz monzonite with a fabric dominated by deformation features. Invariably the microcline stands out as resistant grains although they may be fractured or distorted. Quartz is drawn out into bands of strained, ribbon-like grains that wind through the fabric. Plagioclase lies on grain boundaries. Individual crystals have degenerated into pebbly masses of disoriented grains or, where deformation is more severe, fine granular plagioclase may even fill fractures or "gash veins" in microcline. Although traces of biotite persist, most is replaced by disoriented shreds of sericite. Accessories remain, including partially metamict allanite. Traces of sericite also occur in plagioclase. The estimated mineral percentages are: quartz 23%, microcline 4 4 %, plagioclase 25%, sericite 5%, goethite 2%, zircon tr., allanite tr., apatite tr..

The rock is a breccia derived from a granite. Fragments ae mainly chunks of microcline. Many host corroded remnants or pebbly veinlets of plagioclase or a few books of biotite with their accessories such as apatite and magnetite. The breccia matrix originally was fine grained angular quartz-feldspar debris. The texture has been obliterated due to growth of closely packed, small muscovite scales throughout. Small biotite books are also common in the matrix, tending to cluster with accessories such as apatite and sphene-mantled magnetite. Larger microcline clasts remain quite fresh whereas plagioclase is heavily or totally replaced by muscovite. 91

The rock is a quartz monzonite. It consists of irregular, interlocking grains of quartz, microcline, and plagioclase. Quartz tends to be segregated into pods of jigsaw-puzzle texture and plagioclase also tends to cluster. Many grains have an irregular core of microcline. The microcline is rich in coarse perthitic stringers of plagioclase. The rock has been mildly deformed and a few fractures filled with quartz. Biotite was drawn into cracks and subsequently replaced by sericite and hematite stain. Traces of fluorite were also noted in late fractures. Volume percentages of minerals are estimated as: quartz 22%, microcline 46%, plagioclase 30%, sericite 1%, hematite 0.5%, fluorite tr..

The rock is a granite similar to 91. Plagioclase occurs as crudely lath-like subhedra, often in clusters. The matrix is a complex, ragged intergrowth of microcline and quartz, the latter mineral often segregated into large pods of complex jigsaw-puzzle texture. Some plagioclase is coarsely myrmekitic. This mineral also occurs in ragged stringers within larger microcline grains. The rock is relatively fresh except that lacy muscovite/sericite tablets may attack feldspars, perhaps biotite as well. Neotocite stains fractures and cleavages throughout the rock. Minerals are present in the following estimated amounts: quartz 28%, microcline 47%, plagioclase 20%, sericite 2%, neotocite 3%, zircon tr..

The rock is a quartz monzonite. Rectangular subhedra of plagioclase lie randomly in an equally coarse matrix of microcline and quartz. The quartz tends to be segregated into pods of complex jigsaw-puzzle texture. Some plagioclase laths are embedded in the microcline and are then severely corroded. A few biotite books lie on grain boundaries with accessories such as magnetite. Epizonal alteration has been weak. Biotite is streaked with pennine and may show frilly muscovite overgrowths. Plagioclase is only lightly flecked with sericite. Mineral percentages are estimated as: quartz 24%, microcline 42%, plagioclase 30%, biotite 2%, sericite 1%, magnetite 0.5%, zircon tr.. 97

The rock is a granodiorite in which large anhedra of plagioclase gather into clusters. There are a few large microcline grains as well; when these host plagioclase they do not corrode it. Quartz fills the interstices. It is strained and of jigsaw-puzzle texture, seeming to flow around feldspars along with some crushed and recrystallized feldspars. Foliae of biotite lie in the matrix winding around resistant grains in a synneusis structure. Accessories are confined to these foliae. Subsequent sericitization of plagioclase has been weak. Bio- tite is slightly oxidized and hematite-stained. Minerals are present in the following estimated amounts: quartz 22%, microcline 21%, plagioclase 43%, biotite 11%, magnetite 1%, sphene 1%, apatite 0.5%, allanite tr., zircon tr..

The rock is a quartz monzonite of slightly gneissose character. Quartz, microcline, and plagioclase tend to interlock except along a few zones of healed granulation. Plagioclase overgrowths may be sodic and quite myrmekitic. Thick biotite books are abundant, lying along grain. boundaires so as to give the rock a faint foliation. Sphene is a common accessory with biotite. Further alteration has been feeble. Flecks of sericite are rare in plagioclase and sphene shows some decay to leucoxene. Volume percentages of minerals are estimated as: quartz 14%, microcline 41%, plagioclase 24%, biotite 17%, sphene 1%, magnetite 0.5%, epidote 0.5%, sericite 1%, apatite 0.5%, zircon tr..

100

The rock is a breccia, perhaps representing a biotite-rich shear zone. It carries isolated clasts of plagioclase and microcline, some polycrystalline. A few carry accessory apatite, or small amounts of strained quartz. The matrix hosts biotite books that show a crude overall alignment although individual books may assume any orientation. The books are floating in a fine scaly paste of prochlore that is clearly corroding them. Prochlore was also noted invading feldspars. Feldspars may also be replaced (to a slight extent) by kaolin. 101

The rock is a quartz monzonite with a gneissose structure. Generally quartz, microcline, and plagioclase are of uniform grain size, interlocking on complex grain boundaries. Myrmekitic rims are common on plagioclase. This fabric is cut by zones of fine pebbly texture (quartz-feldspars) that represent earlier crush zones. Healing by recrystallization has been thorough. Foliae of biotite lie along grain boundaries, frequently following crush zones. Although biotite remains fresh, it hosts occasional grains of Fe-rich epidote that may derive from former hornblende. The estimated mineral percentages are: quartz 21%, microcline 26%, plagioclase 45%, biotite 6%, sphene, apatite, epidote, sericite, fluorite, neotocite, magnetite, zircon, and hornblende appear in trace amounts.

103

The rock is a breccia of uncertain origin. All fragments are relatively angular and of varied size. Some were clearly siliceous sediments (siltstone), others are merely quartz clasts. Many, however, were intensely silicified and now consist of dense, cherty quartz with no clue to their original character. The rock matrix is very finely milled and angular debris of similar derivation. It has not been silicified in situ. A few thin cherty quartz veins do cut the matrix, however. Earthy goethite stain is pervasive, and voids in the matrix are invariably filmed with a botryoidal crust of goethite.

4 100'5

The rock is a granite, a coarse, equigranular rock. Most abundant are orthoclase grains that are only slightly perthitic and rarely show faint ordering. Plagioclase grains tend to cluster. They may be myrmekitic, and they show corrosion against orthoclase. Where two orthoclase grains meet, the boundary may carry small plagioclase beads. Coarse, skeletal biotite and hornblende grains are trapped on grain boundaries. Epizonal alteration has been feeble. Chloritization of biotite is rare, and only traces of sericite occur in biotite. Mineral percentages are estimated. as: quartz l1%, orthoclase 55%, plagioclase 26%, biotite 4%, hornblende 3%, sphene tr., magnetite 0.5%, apatite tr., zircn tr.. 105

The rock is a diorite compsed almost exclusively of large, crudely rectangular but mutually interfering plagioclase grains. Some of these show ghosts of former zoning in their cores. Many grains are separated from one another by a scattering of smaller interstitial plagioclase grains that are nevertheless of the same composition. Accessory magnetite occurs along grain boundaries and may be mantled by sphene. Epizonal alteration has been mild. The plagioclase cores show patchy clouding by minute sericite shreds. Stilbite also attacks plagioclase, cutting it as thin veinlets or lining small leached cavities. Minerals are present in the following estimated amounts: plagioclase 95%, stilbite 2%, sericite 2%, magnetite 1%, sphene tr..

107

The rock is a granite in which equant plagioclase anhedra are widely scattered. They lie randomly in a coarser, granular matrix of quartz and feebly ordered microcline. Faint crush zones, well healed by recrystallization cut the fabric. Biotite books lie on grain boundaries, widely dispersed throughout the rock. The crush zones, although well healed, may develop voids lined by euhedral quartz and microcline. The voids are packed with a scaly kandite paste or clusters of heulandite crystals. Biotite and plagioclase in the vicinity are apt to be sericitized. Volume percentages of minerals are estimated as: quartz 28%, microcline 45%, plagioclase 20%, sericite 2%, heulandite 3%, kandite 1%, leucoxene 1%, zircon tr., biotite 0.5%.

108

The rock is a diorite with closely crowded plagioclase laths that show a crude flowage orientation. Mafites are in the interstices in a "diabasic" texture. Usually the mafite is basaltic hornblende. Some of these crystals retain a corroded core of augite. They also are overgrown by more normal uralitic hornblende. Coarse magnetite clusters with mafites whereas apatite tends to be dispersed in plagioclase. The rock shows mild deuteric alteration. Although plagioclase remains perfectly fresh hornblende may show penninization. Original mineral percentages are estimated as: plagioclase 52%, hornblende 38%, augite 3%, magnetite 6%, sphene 0.5%, apatite 0.5%. 110

The rock is a quartz monzonite. The plagioclase crystals are thick, crude laths that lie in an equally coarse matrix of quartz and slightly perthitic orthoclase. Clusters of coarse biotite and hornblende are jammed into the interstices, occasionally showing synneusis structure. They host a scattering of accessory minerals including fresh allanite. Epizorlal deuteric alteration has been feeble. Plagioclase is clouded with sausserite in crystal cores or within certain calcic zones. Penninization of biotite is rare. Traces of fluorite occur on grain boundaries, especially near mafites. An estimate of the original rock mode is: quartz 26%, orthoclase 35%, plagioclase 31%, biotite 5%, hornblende 3%, apatite tr., sphene tr., zircon tr., allanite tr..

111

The rock is a gneissose one of quartz monzonite composition. Lenses of quartz define a banding, alternating with thicker and more continuous bands of microcline and plagioclase. These two minerals are complexly intergrown but plagioclase tends to occur in the centers of the bands with microcline in the interstices. A few flakes of biotite and magnetite grains lie along the foliation but individual biotite books may lie in any position. The rock is absolutely fresh, even showing no weathering. Volume percentages of minerals are estimated as: quartz 24%, microcline 42%, plagioclase 30%, biotite 2%, magnetite 2%, zircon tr..

112

The rock is a gneiss of quartz monzonite composition. It is composed of relatively granular quartz, microcline, and plagioclase, the latter mineral occasionally myrmekitic. Grain boundaries are usually sutured between feldspars, and most grains show a slight flattening on the foliation plane. This is shown by biotite flakes scattered throughout the fabric on grain boundaries. They are quite well foliated, occurring with accessories, including hornblende. Most hornblende, however, has been replaced by late stage granular epidote. The estimated mineral percentages are: quartz 20%, microcline 38%, plagioclase 27%, biotite 12%, hornblende 0.5%, sericite 0.5%, epidote 0.5%, sphene 0.5%, apatite 0.5%, zircon tr.. 113

The rock is a gneiss of quartz monzonite composition. Micro- cline and plagioclase occur as somewhat rounded or oval grains flattened slightly on the plane of foliation. In a few places where granulation occurred the foliation is followed by streams of finer grained feldspars. A few very large microcline grains occur. The plagioclase they may envelop does not appear corroded. Quartz is segregated into lenses of strained grains drawn out with foliation. Small biotite flakes, usually well foliated, are drawn out along grain boundaries or cracks. A few accessories including partly metamict allanite occur in these foliae. Minerals are present in the following estimated amounts: quartz 15%, microcline 32%, plagioclase 46%, biotite 6%, sericite 1%, apatite tr., allanite tr., epidote tr..

116

The rock is a granite with coarse irregular microcline anhedra rich in ragged perthitic stringers. They may host corroded plagioclase grains but most occurs as smaller anhedra strung out along grain boundaries. It is then frequently myrmekitic. Quartz occurs in lenses of strained, interlocking grains. Biotite occurs in thin foliage or fractures that may also carry granulated plagioclase. Accessories here include partly metamict allanite. Fluorite occurs in fractures or grain boundaries throughout the fabric. An estimate of the rock mode is: quartz 14%, microcline 59%, plagioclase 18%, biotite 6%, magnetite 0.5%, allanite 0.5%, monazite tr., sericite 1%, fluorite 0.5%, zircon tr..

125

The rock is a gneis5 of quartz monzonite composition. Although of equigranular texture, individual grains are all flattened very slgihtly with long axes paralle. Plagioclase grains tend to be set within granular microcline; they may show myrmekitic overgrowths. Biotite books are small, lying along grain boundaries in loose foliae that wind through the fabric. Accessories include very rare metamict allanite. Later alteration has been mild, affecting only plagioclase. This mineral hosts traces of epidote and sericite, especially in the vicinity of biotite. Mineral percentages are estimated as: quartz 25%, microcline 30%, plagioclase 35%, biotite 6%, sericite 3%, epidote 0.5%, apatite tr., allanite tr.. 132

The rock is a gneiss rich in coarse biotite and hornblende. These two minerals lie in broad bands with lenses of quartz in between. Although individual grains may have any orientation, they show an overall foliation. Microcline and myrmekitic plagioclase occur sparingly in the interstices of the fabric. Accessory minerals occur abundantly with the mafites. Particularly common are nearly euhedral prisms of allanite. These are mostly altered (metamict) but cores may remain fresh. Traces of fluorite adjacent to allanite have acquired a deep purple color. Minerals are present in the following estimated amounts: quartz 40%, microcline 4%, plagioclase 2%, biotite 24%, hornblende 25%, allanite 3%, sphene 1%, apatite 1%.

137

The rock is a granite composed mainly of very large equant but anhedral microcline grains that carry ragged perthite stringers. Quartz and plagioclase tend to occur in throughgoing bands along grain boundaries. The plagioclase is coarsely myrmekitic. Biotite books also lie along foliae on grain boundaries with a few accessories including partially\ metamict allanite. Fluorite is fairly common in cracks and filling lobate voids along grain boundaries. Volume percentages of minerals are estimated as: quartz 13%, microcline 77%, plagioclase 6%, biotite 3%, fluorite 1%, allanite tr., zircon tr., apatite tr..

139

The rock is a granite with very few subhedral, finely twinned plagioclase grains. Most of the rock consists of very coarse microcline with ragged perthite stringers and lenses of granular quartz. A few bands of finer grained material (mainly plagioclase) represent healed crush zones. Foliae of biotite wind through the rock parallel to these zones. Partially metamict allanite is a conspicuous accessory here. Also common in or near biotite foliae are irregular interstitial patches of fluorite. Plagioclase near the biotite is apt to be mildly sericitized. Mineral percentages are estimated as: quartz 3 4%, microcline 48%, plagioclase 8%, biotite 7%, allanite 1%, fluorite 1%, sericite 0.5%, apatite tr., zircon tr.. 49A

The original rock seems to have been a quartz monzonite with large squarish plagioclase subhedra set in equally coarse quartz and orthoclase. The orthoclase appears to have been very perthitic (stringer type). Thick biotite books occurred on grain boundaries. Epizonal alteration of the rock has been strong. Coarse granular epidote set in a shreddy sericite paste replaces all plagioclase. A similar mixture occurs in strings throughout orthoclase, the latter mineral remaining fresh. Biotite is wholly sericitized and sphene partly converted to rutile. Mineral percentages are estimated as: quartz 30%, sericite 18%, epidote 28%, apatite 0.5%, sphene 2%, orthoclase 21%.

91A

The rock is a quartz monzonite in which equant anhedra of plagioclase tend to cluster. Coarser microcline occupies-much of the matrix. It hosts irregular or corroded patches of plagioclase. Quartz tends to segregate into lenses or bands of strained, complexly interlocking grains. A few biotite flakes lie on grain boundaries with accessory minerals. Epizonal alteration has been weak. Plagioclase hosts a few skeletal sericite (muscovite) flakes and is pervasively iron-stained on cleavages or cracks. Biotite is bleached and iron-stained. Minerals are present in the following estimated amounts: quartz 28%, microcline 41%, plagioclase 26%, sericite 3%, biotite 0.5%, leucoxene 0.5%, magnetite 0.5%, zircon tr..

143

The rock is a granite featuring very large microcline anhedra. Some are patchy with perthite. Between the microcline grains may be bands of finer grained granular plagioclase and slightly strained quartz. Biotite books tend to lie along these with accessory minerals such as partially metamict allanite. Epizonal alteration has been mild. Plagioclase is lightly flecked with sericite and cores of larger grains may host a clump of coarse epidote. Biotite is wholly replaced by clinochlore and granular epidote. Mineral percentages are estimated as: quartz 24%, microcline 44%, plagioclase 20%, epidote 5%, clinochlore 3%, sphene 1%, sericite 22%, allanite 0.5%. 158

The rock is a gneiss of quartz monzonite composition. Grains of quartz, microcline, and plagioclase are relatively equant anhedra, slightly flattened on the foliation plane. Microcline carries few and thin perthitic stringers. Plagioclase may be myrmekitic. There are a few healed zones of granulation along which biotite flakes may occur but most are foliated throughout the rock on grain boundaries. Further alteration effects have been negligible, confined to light but pervasive sericitization of the plagioclase. Volume percentages of minerals are estimated as: quartz 18%, microcline 38%, plagioclase 34%, biotite 6%, sericite 4%, apatite tr..

161

The rock is a gneiss of quartz monzonite composition. Shearing has been heavy, exceeding the recrystallization of the fabric. Generally plagioclase and microcline tend to occur as strained, diamond- shaped augen. They are separated by thin, anastamosing bands of crushed quartz. Since former mafites probably once occurred on grain boundaries they (biotite) and their alteration products (sericite, epidote) are drawn out as crushed epidote and micaceous foliae with the quartz. The estimated mineral percentages are: quartz 26%, microcline 20%, plagioclase 37%, sericite 4%, biotite 7%, epidote 5%, monazite tr., magnetite 0.5%, leucoxene tr..

163

The rock is a granite with squarish, finely twinned plagioclase subhedra set in a notably coarser matrix of quartz and microcline. The latter mineral has varying amounts of plagioclase stringers within it. A few biotite books once occurred on grain boundaries. The rock has been heavily sheared with little attandant alteration. Quartz has disaggregated into jigsaw-puzzle bands that lie along the foliation or fill gash veins normal thereto. Plagioclase tends to disaggregate to a lesser degree. Little sericite attacks plagioclase but biotite is entirely sericitized. An estimate of the rock mode is: quartz 21%, microcline 51%, plagioclase 25%, muscovite 3%, magnetite tr., leucoxene tr.. 165

The rock has the composition of quartz monzonite. Plagioclase and microcline are usually complexly intergrown, the sutured borders seeming to represent healing of an earlier stage of deformation. Biotite books may be of very large size. They cluster in random orientation with hornblende and accessory minerals throughout the rock. Hornblende is frequently poikilitic. There is little alteration of the rock except dusting of some plagioclase with sausserite and corrosion of sphene by leucoxene. Traces of fluorite were noted on grain boundaries. Mineral percentages are estimated as: quartz 7%, microcline 25%, plagioclase 29%, hornblende 22%, biotite 14%, apatite 1%, sphene 1%, magnetite tr., epidote tr., zircon tr., fluorite tr., sericite tr..

166

The rock is a gneiss of quartz monzonite composition. Micro- cline and plagioclase may occur as small resistant grains in a crudely foliated fabric of finer grained quartz and feldspars. The finer grain size is due to earlier deformation, well healed by recrystallization. Small biotite flakes occur sparingly with magnetite. They are squeezed 6nto grain boundaries. There has been further mild epizonal alteration. Most biotite is altered to pennine and epidote, plagioclase is clouded with sausserite. Some portions of the fabric disturbed by late fracturing carry interstitial fluorite. An estimate of the rock mode is: quartz 20%, microcline 44%, plagioclase 32%, biotite 1%, pennine 3%, epidote 0.5%, sericite 2%, sphene tr., allanite tr., fluorite 0.5%, magnetite 1%.

167

The rock is of granitic composition but otherwise similar to 165. The matrix consists mainly of equant microcline anhedra that carry stringer perthite. Plagioclase occurs sparingly as do lenses of strained quartz in the interstices. Hornblende and biotite are abundant, tending to occur in loose clusters with accessories such as sphene and apatite. The hornblende may be poikilitic. Little further alteration has occurred except dusting of plagioclase by sausserite and calcite. Traces of fluorite were seen on grain boundaries or within crystals of feldspar along hairline cracks. The estimated mineral percentages are: quartz 11%, microcline 39%, plagioclase 8%, biotite 20%, hornblende 16%, sphene 2%, apatite 2%, magnetite 1%, epidote, sericite, calcite, and fluorite appear in trace amounts. 168

The rock is a gneiss of quartz monzonite composition. Plagio- clase may occur as large, finely twinned subhedra. Microcline grain size is erratic, with some very large crystalloblasts, some smaller grains that lie with quartz in the matrix. Quartz especially seems drawn out around grains, giving the rock its gneissose appearance. Biotite books lie on grain boundaries in discontinuous foliage that wind along the fabric. Epizonal retrograde effects have been weak. Biotite is occasionally penninized, plagioclase dusted with sausserite. Fluorite occurs rarely on grain boundaries. Minerals are present in the following estimated amounts: quartz 24%, microcline 290, plagioclase 37%, biotite 5%, magnetite 2%, allanite 0.5%, sphene 1%, epidote tr., sericite 0.5%, apatite 0.5%, fluorite tr..

176

The rock is modally a granite. Plagioclase tends to be of lath- like habit, occurring as clusters in an equally coarse matrix of quartz and slightly- perthitic microcline. These two minerals interlock on complex boundaries, the quartz frequently showing strain features. Biotite books and stubby hornblende prisms occur in loose clusters with accessory minerals. Sometimes they seem guided by zones of granulation and one that is more prominent carries coarse, partly metamict allanite. Further alteration has been negligible. Plagioclase may be clouded with sericite dust. Fluorite was noted on grain boundaries but is rare. Volume percentages of minerals are estimated as: quartz 20%, microcline 48%, plagioclase 18%, biotite 3%, hornblende 8%, allanite 1%, sphene 0.5%, apatite 0.5%, magnetite 1%.

179

The rock is a quartz monzonite in which plagioclase grains are rectangular subhedra. They are scattered in an equally coarse matrix of quartz and microcline. Quartz may be strained, even showing ribbon structure but the fabric is not visibly deformed. Microcline may be perthitic; it was also noted filling cavities within plagioclase. Bio- tite books cluster randomly on grain boundaries with accessory magnetite and epidote that could represent former hornblende. Plagioclase cores are clouded with sausserite. All otehr minerals remain fresh. An estimate of the rock mode is: quartz 27%, microcline 33%, plagioclase 30%, biotite 6%, magnetite 2%, epidote 0.5%, sphene 0.5%, apatite 0.5%, allanite tr.. 185

The rock is a granite. Very large microcline grains are equant, sometimes hosting plagioclase as inclusions or patchy perthite. They may also cluster with discrete plagioclase grains, forming resistant islands in a matrix that is a mosaic of interlocking quartz grains. In places the quartz is strained, seeming to flow around feldspars. A few small biotite books lie on grain boundaries. Weak epizonal alteration seems related to later crackling of the rock. Where it is disturbed, sericite attacks feldspars and biotite. Iron released by biotite may stain the fabric. Mineral percentages are estimated as: quartz 35%, microcline 42%, plagioclase 18%, biotite 1%, sericite 3%, magnetite 1%, leucoxene tr., apatite tr..

188

The rock is a granite composed mainly of very coarse microcline with stringer perthite. Small rectangular plagioclase grains occur as inclusions or in clusters along grain boundaries. They show little corrosion by microcline. Lenses of quartz are strained and granulated to a pebbly mosaic. They flow between feldspars and where a lens terminates, a thin zone of crackling may continue through the feldspars. Along such zones, sericite attacks feldspars and tourmaline and hematite fill fractures. Minerals are present in the following estimated amounts: quartz 13%, microcline 76%, plagioclase 7%, sericite 2%, tourmaline 1%, hematite 0.5%, magnetite 0.5%, sphene tr., zircon tr..

190

The rock is a gneiss, a leucocratic one of quartz monzonite composition. Quartz and non-perthitic microcline are equant and unstrained. The plagioclase, however, is often finer grained, occurring as pebbly aggregates on grain boun daries and strung out so as to give the rock a banded structure. Biotite occurs sparingly on grain boundaries. Epizonal alteration has been modest. Plagioclase is lightly but uniformly clouded with tiny sericite scales. Biotite is wholly sericitized with accessory leucoxene dust. While most microcline is fresh, some grains are severely corroded by kaolin. Volume percentages of minerals are estimated as: quartz 25%, microcline 29%, plagioclase 34%, sericite 8%, hematite tr., leucoxene tr., kaolin 4%. 191

The rock is modally a quartz monzonite. Quartz and both feldspars occur as round, anhedral grains set in an inLergranular mosaic of smaller feldspar grains. The finer grained plagioclase may be myrmekitic. A few pods of very coarse quartz also occur. Thick foliae of biotite lie in the granular matrix. They show synneusis structure that wraps through the fabric in random directions. Accessories include hornblende and nearly fresh allanite. The rock shows negligible alteration of retrograde character. Minerals are present in the following estimated amounts: quartz 19%, microcline 25%, plagioclase 37%, biotite 14%, hornblende 2%, sphene 1%, magnetite 0.5%, apatite 0.5%, epidote tr., sericite o0.5%, allanite tr..

193

The rock is a granite, a mosaic of very coarse, irregularly interlocking grains of quartz and microcline. The latter minerals is perthitic, either of patchy or stringer type. Plagioclase occurs as infrequent equant grains scattered in the fabric. Mafites cluster on grain boundaries. Thick biotite books are most common, with lesser hornblende (ferrohastingsite) and accessory minerals. Nearly fresh allanite is very coarse. The rock is nearly fresh excepting some sausserite dust in plagioclase. Mineral percentages are estimated as: quartz 23%, microcline 42%, plagioclase 19%, biotite 5%, hornblende 2%, allanite 4 %, magnetite 1%, sphene 2%, apatite 0.5%, sericite 1%, epidote 0.5%.

195

The rock is a gneiss of granodioritic composition but of uncertain origin. Quartz, microcline, and plagioclase interlock in a jigsaw- puzzle texture but are generally slightly flattened on the plane of foliation. This is best shown by small flakes of biotite that are well aligned and evenly :dispersed throughout the fabric. The rock is riddled with tiny fractures along which flakes of sericite may develop in feldspars. Biotite and accessory magnetite show slight oxidation and sphene is leucoxenized. An estimate of the rock mode is: quartz 27%, microcline 20%, plagioclase 42%, biotite 7%, magnetite 1%, sericite 2%, apatite, leucoxene and hematite in trace amounts. 196

The rock is a granodiorite with small rounded plagioclase phenocrysts set in a matrix of somewhat granular quartz and plagioclase with microcline occupying the interstices. There are also a few microcline crystalloblasts. These host plagioclase grains but do not corrode them. Small biotite flakes lie on grain boundaries, strung out along anastamosing foliage with accessories such as sphene and magnetite. The rock is quite fresh. Some plagioclase cores carry calcite and sericite. Calcite also fills hairline fractures cutting the fabric. Biotite and magnetite are slightly oxidized and sphene is leucoxenized. Mineral percentages are estimated as: quartz 20%, microcline 15%, plagioclase 49%, biotite 10%, magnetite 2%, leucoxene 1%, sericite 2%, calcite 1%.

197

The rock is a granodiorite porphyry with unusually well developed plagioclase phenocrysts. Other phenocrysts include a few subhedra of orthoclase, rounded quartz eyes, and thick biotite books. All are closely crowded in a granophyric matrix of quartz and both feldspars. The rock is quite fresh, suffering only deuteric alteration. Plagioclase may be clouded with dust-like sausserite, other crystals being perfectly fresh. Biotite is mostly altered to pennine hosting blobs of Fe-rich epidote. Original minerals are present in the following estimated amounts: quartz 17%, orthoclase 14%, plagioclase 59%, biotite 8%, magnetite 1%, sphene 0.5%, apatite tr., zircon tr., allanite tr.. 206

The rock seems to represent a shear zone in a meta-volcanic rock. Only traces of original texture survive, showing a scattering of i quartz in a silicified, originally granophyric base. These are fragments set in a sheared matrix of coarse quartz and epidote. Apatite prisms are an unusually abundant accessory; sphene is somewhat less abundant, and.zircon is a minor accessory. There are a few shreds of sericite on grain boundaries. All crystals are crudely aligned but are strained or buckled as though recrystallizing intermittently during shearing. The epidote is irregularly intergrown with or zoned to allanite. The allanite is occasionally fresh but more often has begun to alter to microcrystalline secondary products, becoming partially metamict in the process.

207

The original rock was a dacite with small, widely scattered phenocrysts of plagioclase and biotite. 1 Quartz is rare as small, partially corroded phenocrysts. The phenocrysts show a crude alignment in a chilled, once granophyric matrix of lath-like plagioclase and interstitial quartz. The rock has been strongly altered in the epizone. Quartz has grown crystalloblastically to a ragged mosaic of grains that are littered with undigested shreds of sericite. Patches of scaly sericite represent plagioclase phenocrysts. Coarser sericite replaces biotite, sometimes with kaolin. Tiny rod-like pyrite grains once present in trace amounts are oxidized to microcrystalline jarosite. Mineral percentages are estimated as: quartz 61%, sericite 36%, leucoxene 2%, jarosite tr., zircon tr., kaolin 0.5%.

208

The rock is a gneissose one, perhaps meta-igneous. Plagioclase grains are of rectangular outline and finely twinned. They rest in a somewhat finer grained matrix of quartz and microcline. These minerals have fine grained feldspars on their grain boundaries due to marginal abrasion during deformation. Thick, sinuous foliage of hornblende and biotite wind through the fabric. All of the accessory minerals noted occur here. The epidote appears to be a retrograde mineral, seeming to corrode hornblende. It also was noted surrounding rare pyrite grains (now goethite). There has also been slight decay of plagioclase to retrograde sericite and calcite. Minerals are present in the following estimated amounts: quartz 27%, microcline 13%, plagioclase 28%, biotite 6%, hornblende 18%, magnetite 3%, epidote 2%, sphene 1%, apatite 0.5%, goethite tr., allanite 1%, zircon tr.. 210

The original rock was a vitrophyre of quartz latite composition. Although textural detail has been blurred by strong epizonal alteration, a welded tuff seems likely. Phenocrysts of sanidine and plagioclase tend to be somewhat rounded in outline, occurring in cognate xenoliths or as. isolated clasts. The matrix was streaky glass with innumerable lenses of glass representing flattened xenoliths. The rock has been sheared and is laced with mylonitized zones, now cherty quartz. Similar quartz replaces glass, retaining some inherited textures by virtue of its grain size. Sanidine has been converted to microcline, remaining mostly fresh or slightly corroded by calcite. Plagioclase is converted to a dense mush of kaolin. Tiny pyrite grains disseminated throughout are usually fresh; some are oxidized to goethite or jarosite.

211

The rock is a quartz monzonite with small subhedral phenocrysts of plagioclase and thick biotite books scattered in a matrix of ragged, interlocking quartz and orthoclase grains. Some quartz grains are larger, seeming to have been phenocrysts, but they have ragged overgrowths that merge into matrix quartz. The rock is cut by gneisen zones carrying coarse muscovite set in quartz. In places orthoclase has grown at the expense of plagioclase in the selvages. Pyrite occurs in these zones but is equally disseminated in the wallrock. Traces of barite were noted in the rock, seemingly associated with retrograde smectite. In the rock, plagioclase is moderately sericitized whereas biotite remains quite fresh. Original mineral percentages are estimated as: quartz 28%, orthoclase 25%, plagioclase 40%, biotite 6%, apatite 0.5%, sphene 0.5%, zircon tr..

213

The original rock was a dacite, a chilled volcanic of granophyric texture. It consisted originally of tiny, stubby plagioclase laths of uniform size. They are randomly oriented, separated by a thin interstitial filigree of quartz. Later epizonal alteration was modest. Quartz has grown throughout the fabric. Plagioclase that sur- vives is cloudy and stippled with sericite. Thin veinlets or fractures crisscross the Fabric carrying pyrite grains. Some have a gangue of granular quartz. A few also have thin, well defined selvages in which quartz has obliterated all plagioclase and is still stippled with sericite. The estimated mineral percentages are: quartz 38%, plagioclase 39%, sericite 21%, pyrite 2%. 220

The rock is a gneiss with equant plagioclase grains set in equally coarse, interlocking grains of quartz and slightly perthitic microcline. Quartz and plagioclase may enter into myrmekitic intergrowth. A few biotite books were once present, aligned to a crude foliation. The rock has been sheared and epizonally altered. Thin crush zones run more or less parallel to the foliation and are replaced by dense cherty quartz . Although microcline remains fresh, plagioclase and biotite are altered to a dense paste of kaolin that is often heavily stained with earthy goethite. Traces of earlier sericite remain in some plagioclase relics. An estimate of the rock mode is: quartz 30%, microcline 32 0, kaolin 25%, goethite 7%, leucoxene 1%, zircon tr., sericite 5%.

252

The original rock was a leucocratic gneiss composed of roughly equal amounts of quartz, microcline, and plagioclase. Grains interlock in jigsaw-puzzle fashion although all somewhat elongate on the foliation plane. A few thin flakes of biotite were once present on grain boundaries. Epizonal alteration was moderate, accompanied by minor brecciation. Plagioclase is replaced by a dense kaolin paste with some relict sericite as an intermediate product. Biotite is similarly altered and goethite-stained. Kaolin has also begun to attack microcline, and fresh microcline is stained on cleavages with goethite. An estimate of the rock mode is: quartz 36%, microcline 18%, kaolin 38%, goethite 4%, garnet 0.5%, leucoxene 0.5%, sericite 3%.

274

The rock is a gneiss of granodioritic composition. Plagioclase and quartz are granular although the latter mineral shows strain features. Microcline occurs as an occasional large, slightly perthitic grain or as.. interstitial material. Biotite and hornblende lie on grain boundaries, showing confused foliation and sometimes crumpling where pressed between quartz and feldspars. The hornblende may be uralitized and hematite-stained. Retro- gnessive alteration of plagioclase to sericite, rare clinozoisite, has been mild. Traces of a metamict mineral were observed in biotite. The estimated mineral percentages are: quartz 24%, microcline 7%, plagioclase 44%, biotite 16%, hornblende 8%, apatite 0.5%, hematite tr., zircon tr.. 276

The rock is a gneiss of uncertain origin. It consists of oval grains of quartz, microcline, and plagioclase that are severely strained. Their borders have begun to break down to microcrystalline rubble that flows around them. Minute flakes of biotite are abundant in this rubble matrix, concentrated in an anastamosing web of seams that flow through the rock. Individual biotite scales in these seams are not well aligned to foliation, however. The rock shows no post-metamorphic alteration whatsoever. Volume percentages of minerals are estimated as: plagioclase 42%, quartz 26%, microcline 16%, biotite 15%, apatite 0.5%, hornblende tr., zircon tr..

277

The rock is a gneiss of quartz monzonite composition. Plagio- clase and microcline grains tend to be equant while quartz gathers into lenses of complexly intergrown individuals. Microcline is rich in minute hourglass spindles of perthitic plagioclase. Biotite books cluster along grain boundaries in such a way as to impart a crude foliation, but individual crystals may assume any orientation. Traces of epidote with the biotite seem to be retrograde. Epi- dote and sericite also attack plagioclase to a minor extent. Minerals are present in the following estimated amounts: quartz 37%, microcline 25%, plagioclase 30%, biotite 5%, sericite 1%, goethite 1%, epidote 0.5%.

278

The rock is a gneiss with a scattering of relatively large, stable grains of microcline and plagioclase. They lie in a matrix of finer grained quartz, interlocking grains that tend to flow around the feldspars. There has been minor granulation of feldspar grain. boundaries. Biotite books lie on grain boundaries showing a crude foliation. They may be crumpled or torn apart on the foliation plane. Biotite was even noted squeezed into cracks cutting microcline. There has been mild retrograde alteration. Effects are confined mainly to weak sericitization of plagioclase. Biotite seems bleached, surrounded by minor iron oxide stain. An estimate of the rock mode is: quartz 17%, microcline 43%, plagioclase 29%, biotite 8%, zircon tr., apatite tr., sericite 3%. 285

The rock is a quartz monzonite in which equant anhedra of plagioclase are scattered. The matrix is granular microcline and plagioclase. Quartz is coarse grained occurring in lenses. Bio- tite flakes are small, pressed onto grain boundaries but showing some alignment throughout the fabric. The rock appears disaggregated slightly, perhaps due to weathering. Biotite is slightly bleached and tiny flecks of sericite occur in plagioclase. Mineral percentages are estimated as: quartz 24%, microcline 21%, plagioclase 41%, biotite 11%, magnetite 1%, leucoxene 0.5%, apatite tr. , ser ic ito 1%.

289

The rock is a quartz monzonite, a coarse grained rock that is a mosaic of quartz, microcline, and plagioclase anhedra. Microcline is slightly perthitic although it does not corrode inclusions of plagioclase. The quartz gathers into clusters of slightly strained crystals interlocking on ragged boundaries. Plagioclase may be coarsely myrmekitic. Biotite books lie in strings that wind through the fabric on grain boundaries. They are stippled with pleochroic haloes around accessory minerals. In the vicinity of the biotite, peculiar lacy books of sericite attack feldspars, especially plagioclase. Minerals are present in the following estimated amounts: quartz 28%, microcline 33%, plagioclase 23%, biotite 9%, sericite 6%, zircon 0.5%, apatite tr., monazite tr., xenotime tr..

294

The rock is a granite composed largely of very coarse, ragged microcline grains. These host a few rounded grains of quartz or plagioclase and are set in a matrix of quartz clusters and occasional plagioclase anhedra. Thick biotite books are abundant on grain boundaries. They occur with an unusual abundance of accessory minerals, particularly sphene. Most biotite books show frilly overgrowths against quartz and feldspars. The rock is fresh. Only minute races of sericite and calcite were observed in feldspars. The estimated mineral percentages are: quartz 22%, microcline 42%, plagioclase 18%, biotite 14%, sphene 2%, apatite 1%, magnetite 1%. Loghry-Heinrichs Joint Venture P.O. Box 5964 Tucson, Arizona 85703 Telephone: (602) 623-0578

January 29,1980 Samples Submitted to Dr. S. A. Williams for Petrologic Examination

Project No. 30-79-3307. Uranium in Precambrian Plutonic Rocks,

Northwestern Arizona

M t.Sopris NWA ORGDP Sci nt. U/FL No. No. Age, Description and Comments CPS PPM

1 153603 PC porph bio qtz monz, Aquarius batholith. 130 1.1 NWA-2,23,possibly 24 are phases of Aquarius batholith.

2 153604 PC granite, med-gr phase, pink,Aquarius 150 1.2 batholith.

3 153605 TK, Laramide or mid-Tertiary monz (?) 115 0.63

4 153606 PC, 1337 + 38m.y., med-gr bio qtz monz. 475 8.4 Kessler's "medium-grained granite" = Democrat granite. 5 153607 PC, 1800 + 470m.y. Hualapai granodiorite, 160 2.8 Kessler's "granodiorite gneiss" same as 36, an important unit in Hualapai range intruding older schists and gneisses. 7 153609 PC, bio-musc granite 350 2.7

9 153611 PC musc qtz monz porph - Odle Ranch Alaskite 150 1.6

10 153612 PC Cavalliere qtz monz or granodiorite? 115 1 .1 Compare with 10 and 16. Cavalliere-Wabayuma Peak pluton. 11 153613 PC porph qtz monz 325 6.8

12 153614 PC Fine gr. pink granite sill, NE Fork 600 19.0 Bar I-L

-1- Mt.Sopris NWA ORGDP Scint. U/FL No. No. Age, Description and Comments CPS PPM

13 153615 PC porph bio qtz monz, Burch Peak 225 4.9 batholith, distinctive coarse blue-gray K-feldspar orthoclase (?) phxsts. Compare with NWA-15.

14 153616 PC diabase, irregular dike 60 0.76

15 153617 PC porph bio qtz monz, Burch Peak batholith. Compare with NWA-13. 250 4.9 16 153618 PC porph bio-musc granite gneiss Compare with 10 and 16 . 425 5.6 17 153619 PC porph qtz monz, fluorite, Dutch Flat 500 6.9 pluton. Compare with 33. Contrast w. 34. 18 153620 PC porph qtz monz, Dutch Flat pluton, .450 2.62 altered, green "Greisen", muscovite- chlorite alteration, bull qtz, minor hematite. 21 153623 PC porph qtz monz similar to that near 300 7.0 Aubrey Peak, could be Burch Peak batholith. Compare, correlate, if possible with NWA 13, 15. If no correlation, compare with nearby Artillery pluton, NWA- 70, 71. Not Burch Peak, Signal granite. 22 153624 PC bio-feldspar schist, soil-covered, in 1800 55.0 contact with Laramide (?) dike, on east, PC muscovite-biotite granite on west. It could be metamorphosed muscovite-biotite granite as mapped or covered metasediment. Could Feldspar porphyroblasts be pebbles? Is it a meta-conglomerate or intrusion? Special Features? Portable spectrometer suggests 3.86% K, 80.67 ppm U and 237.2 Th. 23 153625 PC porph bio granite or qtz monz, a phase 200 2.3 of the Aquarius batholith Boner Canyon tungsten district, as are NWA-1,2, possibly 24. This may be an odd rock. Portable spectrometer suggests 4.45%K, 6.93 ppm U, 0.035 ppm Th. Samples 1 and 2 show 3.5%K, 5.62 and 2.5 ppm U, 103 and 1.93 ppm Th.

24 153626 PC porph bio qtz monz similar to NWA-1 and 300 0.99 thought to be Aquarius batholith even though in Deluge Wash with miles of intervening gravel cover. Compare with 1, 23. Spec. suggests 3.31%K, 6.22 ppm U, 3.78 ppm Th Could be Burch Peak batholith.

- 2 - Mt.Sopris NWA ORGDP Scint. U/FL NO. No. Age, Description and Comments CPS PPM

25 153628 Laramide porph qtz monz, 72m.y. Diamond 130 1.4 Joe stock, eastern and outer facies

26 153629 Laramide bio qtz monz porph, western and 140 1.3 outermost phase of Diamond Joe stock strongly altered to K-feldspar-muscovite- qtz "greisen" with qtz, qtz-sericite (MOS2) veinlets and occasional late iron carbonate veinlets. See 29 for less- altered rock.

28 153631 PC porph bio qtz monz plug, pyrite vein- 250 3.7 lets, near Diamond Joe stock contact. 29 153632 Laramide bio qtz monz porph drill core, 120 1.4 western outermost phase of Diamond Joe stock, pyrite veinlets.

30 153633 PC porph bio qtz monz, coarse. Bar 450 5.2 IL Ranch. Copper Creek pluton.

31 153634 PC porph bio qtz monz, Cottonwood 550 14.0 Canyon. Compare with 30.

32 153635 PC gneissic bio qtz monz porph or granite. -- 4.1 ompar with other granite gneisses- 111,77, andotriers . 33 153636 PC porph qtz monz. Dutch Flat pluton. 650 11.0 Compare with 18. Contrast with 34.

34 153637 PC, 1397 + 69m.y., porph qtz monz, 340 7.3 Hualapai Peak qtz monz. Hualapai Granite of Kessler (1976).

35 153638 PC 1397 + 69m.y. porph qtz monz. 235 2.0 Hualapai Peak Quartz Monzonite, Hualapai granite of Kessler (1976). Compare with more radioactive 34. 37 153640' PC, gneissic biotite granodiorite. 145 2.4 Hualapai granodiorite, ranodiorite gneiss of Kessler (1976). 1800 + 470m.y. An important, large pluton intruding the older schists and gneisses.

38 153641 PC bio-musc granite, fine-med gr, host to 350 6.1 Democrat Mine Laramide (?) shear zone with pyrite, arsenopyrite - Au - Ag - U308 . Democrat granite.

- 3 - Mt.Sopris NWA ORGDP Scint. U/FL No. No. Age, Description and Comments CPS PPM 42 153645 Laramide qtz monz por stock of Wheeler 100 0.9 Wash, associated with Cu-M0 prospect.

43 153646 Laramide (+ 72m.y.) Copper Canyon quartz 450 89.0 vein in Laramide 72m.y. biotite qtz monz por Facies of the Diamond Joe stock - specimen is radioactive K-spar-muscovite- chalcopyrite-molybdenite pod in quartz vein.

49 153652 PC, med gr granite gneiss, altered, chlor 9.5 epidote, could be 2-mica

50 153653 PC coarse porph bio qtz monz, Valley pluton. 5.2

52 153655 PC Antares I pluton, coarse porphyritic 5.5 foliated bio qtz monz.

53 153656 PC Valley pluton, med-coarse porph bio qtz 13.0 monz, hematite specks in K-spar phxsts, abundant crowded large and small K-spar phxsts.

54 153657 PC Valley pluton, med-coarse porph bio 11.0 qtz monz, hematite specks in K-spar phxsts.

55 153658 PC Valley pluton, chlorite, hematite alteration, 4.7 cataclastic deformation, numerous flat fracs across foliation filled with blk-gn chlorite, some breccias.

58 153661 PC porph bio granodorite gneiss, part of older 2.1 terrain intruded by Valley pluton. No rad anomaly. 61 153664 PC Valley pluton coarse porph bio quartz monzo- 7.5 nite. Rad anomaly 2.0 64 153667 PC (1740m.y.) Valentine foliated med-grained porph bio qtz monz, not a Laramide granite as advertised on County Geologic Map. 4 sets of fractures mineralized with goethite, hematite, 1 set with epidote. Not anomalous in radioactivity.

66 153669 PC (1740m.y.) Valentine pluton, no rad anomaly. Compare, correlate with No. 64.

-4- Mt.Sopris NWA ORGDP Scint. U/FL No. No. Age, Description and Comments CPS PPM

67 153670 PC coarse-grained granite pegmatite of 2.6 north Peacock Mountains, large body, part of older terrain intruded by Antares pluton and PC diabase dikes. No rad anomaly.

68 153671 PC Antares pluton, coarse-grained bio qtz monz, similar to 52. Compare, believe they are part of same pluton.

69 153672 PC Antares II pluton coarse bio qtz monz, crowded abundant large K-spar phxsts. Similar rock is associated with 68, so I believe this to be a phase of the same Antares pluton. Compare with 52, 68.

-5- Mt.Sopris NWA ORGDP Scint. U/FL No. No. Age, Description and Comments CPS PPM

70 153673 PC Artillery pluton, porph bio qtz monz. Compare with 21, 71,72; 21 may be a different pluton

71 153674 PC Artillery pluton, coarse porph bio qtz monz.

72 153675 PC Artillery pluton?, compare with 70,71.

73 153676 PC med-gr porph granite, near, may or not be a phase of the Greenwood Peak pluton.

74 153677 PC - Burch Peak pluton, coarse porph bio qtz monz. Anomalous Radioactivity.

75 153678 PC pink coarse-gr porph bio qtz monz. Anomalous radioactivity.

77 153681 PC Beecher Canyon pink granite Gneiss.

79 153683 PC Grooms Springs pluton, med-gr porph bio qtz monz. 81 153685 PC Groom Springs pluton, fine-med-gr phase. 83 153687 PC Greenwood Peak pluton, strongly foliated coarse porph bio qtz monz. Anomalous radioactivity.

85 153689 PC Greenwood Peak pluton, coarse porph bio qtz monz. Anomalous radioactivity.

91 153695 PC Blazing Star pluton, pink med-gr 1410 porph biotite granite, non-foliated, dissem Fluorite xls, rare black pitchblende? yellow-white pulverulent unknown can be associated with fluorite. Strong radiation anomaly.

92 153696 PC Blazing Star pluton, pink-brown 300 med-gr porph granite, sparse fluorite almost no biotite. Weak rad. anomaly.

96 153700 PC Blazing Star pluton, med-gr red 700 porph granite, minor biotite. Fewer qtz phxsts than elsewhere, fluorite, red hem stain. Moderate rad anomaly.

- 6 - Mt.Sopris NWA ORGDP Scint. U/FL No. No. Age, Description and Comments CPS PPM

97 153701 PC gray bio qtz monz, foliated, older terrain probably intruded by Blazing Star granite.

99 153703 PC med-gr porph gneissic grano- 235 diorite, older terrain. N.Aquar- ius mountains. Compare with 101.

100 153704 Uranium Basin prospect pit, narrow 4250 zone orange K-spar bio pegmatite cuts black-green chloritized biotite schist. Secondary K-spar, chlorite, goethite, iron carbonate

101 153705 N. Aquarius Mts., PC porph quartz . 150 monz, older terrain, compare with 99, both are older Precambrian "gneiss" terrain, several miles apart, no contact was noted between them.

103 153707 Big Ledge uranium prospect, 3000 silica-limonite 22" wide breccia in hanging wall of Big Ledge, an altered, silicified bx'd outcrop of PC metamorphics-tenolith in 99, 101 terrain.

104 153708 PC Holy Moses coarse porph bio 210 qtz monz.

105 153709 PC white plagioclase ? pegmatite 350- in 104, with quartz, sphene amphi- 500 bole needles Unusual Spec: no K(?), 60 ppm U 19 ppm Th.

107 153711 Laramide? qtz monz, limonite, 300 pyrite, adjacent to part of Bimetal limonite-Au breccia. Wish to be certain this is not altered grani- tized PC meta-seds or gneisses. Laramide (?) 108 153712 / dark gray fine-gr bio diorite, 50 McConnico diorite.

110 153714 PC Holy Moses coarse porph bio qtz 250 monz.

111 153715 PC Shingle Canyon granite gneiss. 180 Compare with other granite gniesses Numbers.

-7 - Mt.Sopris NWA ORGDP Scint. U/FL No. No. Age, Description and Comments CPS PPM

112 153716 PC gneiss, qtz-feldspar-bio 170 diorite? gneiss, older terrain intruded by Holy Moses pluton PC meta-seds?

113 153717 PC diorite? gneiss, older terrain 200 intruded by Holy Moses pluton PC meta-seds?

116 153720 PC Holy Moses coarse porph bio qtz 1100 monz, coarse biotite clots.

125 153729 PC Granite gneiss, at Lookout 210 Spring.

132 153736 PC Holy Moses porph bio qtz monz, 1060 strong bio.

137 153741 PC Holy Moses, sparse fluorite or 1400 amethyst, hematite.

139 153743 PC Holy Moses, appears to be a 1200 pegmatite, but believe it to be K-spar-chlorite alteration; goethite after minor sulfides - old prospect pit.

143 153747 PC Holy Moses porph. bio qtz monz 650 chlor, K-spar hem alt'n

158 153753 PC Rattlesnake Hill granite gneiss 320 (Kessler 1976)

161 153766 PC granite gneiss, Faculty Springs 525 area. Compare with other gneisses 16, 32, 73, 77, 11, 158 and fine- grained granites - 12, 38

163 153763 PC (1400 m.y.?) Blazing Star porph 500 granite 165 153770 PC (1700 m.y.?) South Peacock 325 pluton, porph bio granite intruded by Blazing Star pluton.

166 155771 PC fine-grained granite dike, intrudes 500 Blazing Star pluton

- 8 - Mt.Sopris NWA ORGDP Scint. U/FL No. No. Age, Description and Comments CPS PPM 167 153772 PC (1700 m.y.?) South Peacock 300 pluton, med-gr porph bio granite

168 153773 PC (1400 m.y.?) Blazing Star 420 pluton, porph bio granite

176 153780 PC (1700 m.y.?) South Peacock 400 pluton, K-spar phxst phase

179 153784 PC (1700 m.y.?) South Peacock 480 pluton, coarse porphyritic phase

185 153796 PC (1400 m.y.?) Blazing Star 560 pluton, porphyritic granite

188 153793 PC (1400 m.y.?) Blazing Star 780 pluton, coarse porph granite, sparse diss. Fluorite

190 153795 PC (1700 m.y.?) Peacock Peak pluton, 250 foliated fine-med-gr porph qtz monz. Compare with 191, 195, 196

191 153796 PC (1700 m.y.?), Peacock Peak 130 pluton, coarse-gr porph qtz monz gneiss

193 153798 PC (1400 m.y.?) Antares II pluton 215 (same as No. 69) coarse, crowded porph bio qtz monz, intrudes PC pegmatitic granite (No.67) and Antares I pluton (No.52,68).

195 153800 PC (1700 m.y.?) Fine-grained 175 granite gneiss, Peacock Peak pluton? Compare with 190,191,196

196 153801 PCC (1700 m.y.?), fine-gr. bio qtz 150 monz gneiss, Peacock Peak pluton? Compare with 190,191,195 to determine if all can be part of same large pluton.

197 153802 Laramide (?) qtz monz porphyry dike 110

- 9 - Mt.Sopris NWA ORGDP Scint. U/FL No. No. Age, Description and Comments CPS PPM

206 153811 PC biotite gneiss, qts. vnlts, radio- 400-3000 active shear zone, dk bn xis.

207 153812 Lar felsite (rhyolite(?)) dike, Bronco 140 dike. 208 153813 PC diorite gneiss 120

210M.obably 155815160 Ding's Ithaca Peak granit P alt'd PC gneiss, compare with 220, 252, also "Mip".

211 153816 Lar Ithaca Peak Qmp pit ore, 4110 Bench 128

213 153818 Lar felsite (rhyolite(?) dike, 4425 Bench 170 (similar to 207) 220 153825 Ding's Mip, alt'd PC gneiss, compare with 180 210, 252

252 153857 Ding s Mip, alt'd PC gneiss, compare with 150 210, 252 274 153879 PC ( m.y.) Diana granite, foliated 120

276 153881 PC ( m.y.) Diana granite, gneiss near 150 contact

277 153882 PC ( m.y.) chloride granite 225 278 153883 PC ( m.y. chloride granite 220 285 153890 PC (1740 m.y.) Valentine Qm 125

289 153894 PC, gray porph bio Qm 650

294 153899 PC, porphyritic bio Qm of Stout's well 350

- 10 - Loghry-Heinrichs Joint Venture P.O. Box 5964 Tucson, Arizona 85703

January 29, 1980

Dr. Sidney A. Williams 2.0. Box 872 Douglas, AZ 85607 Re: Petrology Study Specimens, Batch 1 Dear Dr. Williams: BX-3307 NWA Account No.1346-B

We have sent under separate cover 57 hand specimens in 3 boxes, one via UPS and 2 via U.S.Mail Parcel Post. Each -specimen is ba'gged or has a bag for heels. Please return the heels to us on completion of project. Please keep heels and thin sections for comparison with specimens in later shipments. We'll request their return when we need them. A list and field description is attached. Sample 51 is listed but has not been submitted.

Enclosed are Bendix Exhibits A and A-1 outlining the purposes of the project with background information. Please read, emphasizing pages lA, 2A, 5A, 6A, 14A and 15A. We welcome any suggestions or recommendations you may have for this project or a follow-up project. We are supposed to make recommendations for further work.

Please classify each specimen as to rock type with approximate mineral percentages and note accessory minerals and any alteration, and search for characteristics which vary with uranium, thorium and radioactivity. A discussion of similarities and differences between the plutons will be appreciated. Precambrian plutons in Mohave County fall into several categories: 1) coarsely prophyritic biotite cuartz monzonites (Holy Moses, Dutch Flat, Artillery,Valley, Burch ?eak batholith, Groom Peak, much of Aquarius batholith, Hualapai Pea,: plutons are examples) some of which are locally anomalously radioactive; 2) medium-grained red or pink granites that are usually anomalously radioactive; (medium grained granite of Kessler, NE [ork Bar IL granite, Rattlesnake Hill granite gneiss, and 3) limonitic gra::ite gneisses (3 plutons seen so far) that are not anomalously radioactive. Other, so far unique anomalous plutons are the Demo&-at medium-grained felsic, 2-mica granite, the Blue Tank biotite-muscovite granite and the Blazing Star porphyritic, fluorite-bearing granite. Other non-anomalous, older plutons are the Cavalliere quartz monzonite (?), the Burch Peak batholith and the Hualapai biotite granodiorite, the oldest intrusion in the range. We plan to submit specimens of the Wikieup granodiorite to compare with the Hualapai Dr. Sidney A. Williams January 29, 1980 Page Two granodiorite. We are also submitting specimens of the older "Pre- cambrian gneiss", which includes intrusions, meta-sediments, volcanics and migmatites for identification as to their possible origin, mineralogy and metamorphic grade.

We are obliged to determine how the Mohave county rocks compare with Matthews Uranium-rich plutonic deposit model in Table 1 of Exhibit A-l.

Thanks for supporting our effort.

Sincerely,

James D. Loghry

JDL:mt Enclosures: Three Packing Lists, Specimen List. Exhibits 1, lA cc: Hal Gardnerr.-e-- NW Arizona Plutonics Project No. 30-79-3307 BX 33-07 Subcontract 79-458-D

June 26, 1980

Rock Chip Samples Surface Geologic Unit Code Changes

Site No. Sample No. Change Code To 1 153603 PCAB

2 153604 PCAB

3 153605 LAP

4 153605 PCD

6 153608 LQVN

7 153609 PCBT

8 153610 LQVN 9 153611 PCOA

10 153612 PCWP

11 153613 PCCC

13 153615 PCBP

15 153617 PCBP

17 153619 PCDF

18 153620 PCDF

19 153621 PCDF 20 153622 PCDF

21 153623 PCSG 23 153625 PCAB

24 153626 PCBP(?)

153627 was not used

25 153628 L DJ

26 153629 LDJ

27 153630 LQVN

29 153632 LDJ -1- NW Arizona Plutonic Project No. 30-79-3307 BX 33-07 Subcontract 79-458-D

June 26, 1980

Rock Chip Samples Surface Geologic Unit Code Changes

Site No. Sample No. Change Code To 30 153633 PCCC

31 153634 PCCC

32 153635 PQMG 33 153636 PCDF

34 153637 PCHP

35 153638 PCHP

36 153639 PCHP

38 153641 PCD

39 153642 LQVN 40 153643 LQVN

41 153644 LQVN

42 153645 LWW

43 153646 LQVN

Water Samples 44 153647 PCCC

45 153648 PCDF

46 153649 PCHP

47 153650 PHGD (also PCHP, LQVN) 48 153651 PCD

Rock Chip Samples

50 153653 PCHV 51 153654 PCHV

52 153655 PCAN

53 153656 PCHV 54 153657 PCHV -2- NW Arizona Plutonics Project No. 30-79-3307 BX 33-07 Subcontract 79-458-D

Rock Chip Samples Surface Geologic Unit Code Changes

Site No. Sample No. Change Code To

55 153658 PCHV

56 153659 PCHV

57 153660 PCHV

58 153661 BTGG

59 153662 PCHV

60 153663 PCHV

61 153664 PCHV

62 153665 PCHV

63 153666 PCHV

68 153671 PCAN

69 153672 PANT

70 153673 PCAP

71 153674 PCAP

72 153675 PCAP

73 153676 PCGP(?)

74 153677 PCBP

75 153678 PCGP

153679 was not used

76 153680 PCGP(?)

77 153681 GRGN 78 153682 PCDF

79 153683 PCGS 80 153684 PCGS

81 153685 PCGR

82 153686 PCGP -3- NW Arizona Plutonics Project No. 30-79-3307 BX 33-07 Subcontract 79-458-D

June 26, 1980

Rock Chip Samples Surface Geologic Unit Code Changes

Site No. Sample No. Change Code To

83 153687 PCGP

84 153688 PCGP

85 153689 PCGP

Water Samples

86 153690 PCSW

87 153691 PCGP(?)

88 153692 PCGN

89 153693 PCGR

Rock Samples - Batch D

90 153694 PCBS

91 153695 PCBS

92 153696 PCBS

93 153697 PCBS

94 153698 PCBS

95 153699 PCBS

96 153700 PCBS 97 153701 PBGD

98 153702 PCBS

99 153703 PPQM

100 153704 UBBX

101 153705 PPQM

104 153708 PCHM

107 153711 PCGR NW Arizona Plutonics Project No. 30-79-3307 BX 33-07 Subcontract 79-458-D

Rock Chip Samples Surface Geologic Unit Code Changes

Site No. Sample No. Change Code To

108 153712 LHDI

109 153713 PCHM

110 153714 PCHM 111 153715 QMGN

115 153719 PCHM

116 153720 PCHM

117 153721 PCHM

119 153723 PCHM

120 153724 PCHM

121 153725 PCHM

122 153726 PCHM

123 153727 PCHM

124 153728 PCHM

127 153731 PCHM

128 153732 PCHM

129 153733 PCHM

130 153734 PCHM

131 153735 PCHM

132 153736 PCHM

133 153737 PCHM

134 153738 PCHM

136 153740 PCHM

137 153741 PCHM

138 153742 PCHM

139 153743 PCHM -5- NW Arizona Plutonics Project No. 30-79-3307 BX 33-07 Subcontract 79-458-D

Rock Chip Samples June 26, 1980 Surface Geologic Unit Code Changes

Site No. Sample No. Change Code To

140 153744 PCHM

141 153745 PCHM

142 153746 PCHM

143 153747 PCHM

153748 was not used

145 153750 PCHM

146 153751 PCHM

147 153752 PCHM

148 153753 PCHM

149 153754 PCHM 150 153755 PCHM

151 153756 PCHM

152 153757 PCHM 153 153758 PCHM

Water Sample

157 153762 PCHM

Rock Samples

162 153767 PCBS

163 153768 PCBS

164 153769 PCBS

168 153773 PCBS

171 153776 PCBS

173 153778 PCBS 174 153779 PCBS 175 153780 PCBS -6- NW Arizona Plutonics Project No. 30-79-3307 BX 33-07 Subcontract 79-458-D

Rock Chip Samples June 26, 1980 Surface Geologic Unit Code Changes

Site No. Sample No. Change Code To

177 153782 PCBS

178 153783 PCBS

180 153785 PCBS

181 153786 PCBS

182 153787 PCBS

183 153788 PCBS

184 153789 PCBS

185 153790 PCBS

186 153791 PCBS

187 153792 PCBS

188 153793 PCBS

191 153796 PMQM

192 153797 PCAN 193 153798 PANT

194 153799 LQVN

195 153800 GDGN

196 153801 GDGN

197 153802 LGDP

206 153811 PCMV

207 153812 LDD 208 153813 GDGN

213 153818 LDD

214 153819 PGNA

220 153825 PGNA

-7- NW Arizona Plutonics Project No. 30-79-3307 BX 33-07 Subcontract 79-458-D

June 26, 1980

Rock Chip Samples Surface Geologic Unit Code Changes

Site No. Sample No. Change Code To 223 153828 PGNA

226 153831 PGNA

227 153832 LDD

229 153834 LDD

231 153836 GDGN

238 153843 PGNA

239 153844 GDGN

246 153851 LDD

253 153858 QMGN 257 153862 LDD

274 153879 PCDG

276 153881 PCDG

277 153882 PCCG

278 153883 PCCG

279 153884 PCCG

281 153886 LQVN

282 153887 LQVN

283 153888 LQVN 289 153894 PGGN

290 153895 PGGN 291 153896 PCDF

292 153897 PCDF 294 153899 PCSW

-8- NW Arizona Plutonics Project No. 30-79-3307 BX 33-07 Subcontract 79-458-D June 26, 1980 Rock Chip Samples Surface Geologic Unit Code Changes

Site No. Sample No. Change Code To Water Samples

295 153900 PCBP

320 153925 PCHM

356 153961 BMT

364 153969 PCD

Rock Chip Samples Old Sample # New Sample #

412 *154017 (NWA) 106520** PCQM

431 *154036 (NWA) 106540** LGD

483 *154088 (NWA) 106593** LGD

485 *154090 (NWA) 106595** LGD

494 *154099 (NWA) 106605** PCQM

517 *154122 (NWA) 106629** LWW

* Note: these numbers duplicate numbers previously assigned to another project (CAA?) but are temporarily being used together with the (NWA) designation until we are advised of the assigned new numbers to use instead.

** Note: New numbers assigned by Union Carbide Corporation (Oak Ridge) (Received June 28, 1980)

-9- NW Arizona Plutorlics Project No. 30-79-3307 BX - 3307 Subcontract 79-458-D 7 July 1980

GEOLOGIC UNIT CODE CHANGES

Site Number Chance Code To:

438 106547 LWW

441 106550 LWW

442 .106551 LWW

466 106576 LWW

467 106577 LWW

471 106581 LWW

472 106582 LWW

479 106589 LWW

488 106599 LWW

Water Samples

506 (W68) 106617 LWW

508 (w70) 106619 LWW

509 (w71) 106620 LWW 517 (w79). 106629 LWW NORTHWESTERN ARIZONA PLUTONICS Project No. 30-79-3307 BX-3307 Subcontract No. 79-458-D 15 July 1980 Samples Submitted to ORGDP

CK CHIP SAMPLES All or most Samples Submitted for Analysis data received (see critique for details)

Site No. Sample No.

1 - 24 153603 - 153626 yes - except 153625 (153627 - N/A) 25 - 43 153628 - 153646 yes 49 - 75 153652 - 153678 yes except 153666 76 - 85 153680 - 153689 yes 90 - 143 153694 - 153747 yes 144 - 153 153749 - 153758 yes 158 - 198 153763 - 153803 yes 203 - 294 153808 - 153899 yes except 153822, 153836, 153839, 153863, 153875

312 - 395 153917 - 154000 no data 421 - 462 106530 - 106571 no data 463 - 486 106573 - 106596 no data 487 - 497 106598 - 106608 no data 153625, 153666, 153822, no data 153839, 153863, 153875, no data NORTHWESTERN ARIZONA PLUTONICS Project No. 30-79-3307 BX-3307 Subcontract No. 79-458-D Samples Submitted to ORGDP 15 July 1980

WATER SAMPLES LIST

Samples Submitted

Water No. Site No. Sample No. Data Rec'd

W1 - 5 44 - 48 153647 - 153651 yes 6 - 9 86 - 89 153690 - 153693 yes 10 - 13 154 - 157 153759 - 153762 yes 14 - 17 199 - 202 153804 - 153807 yes 18 - 34 295 - 311 153900 - 153915 yes (153901 U data only) 35 - 46 395 - 407 154001 - 154012 no 47 - 51 408 - 412 106516 - 106520 no (106521 not assigned) 52 - 59 412 - 420 106522 - 106529 no 60 - 74 498 - 512 106609 - 106623 no (106624 not assigned)

75 - 80 513 - 518 106625 - 106630 no (106631 not assigned) 81 - 90 519 - 528 106632 - 106641 no NORTHWESTERN ARIZONA PLUTONICS Project No. 30-79-3307 BX-3307 Subcontract No. 79-458-D 15 July 1980 Samples Submitted to ORGDP

Soil & Rock Samples with no data: Total number of samples Sample Serial Numbers Involved involved

153625, 153666, 153822, 153836, 153839, 153863, 153875 7 from: 153917 thru 154000 84 " 106530 106571 42 " 106573 106596 24 " 106598 " 106608 11

Total soil & Rock samples with no analytical data: 168

Water Samples with no data:

56 sites:(W35 thru W90) or 25 sites, #396 thru #420, and 31 sites, #498 thru #528:

Sample Serial Nos. 154001 thru 154012 12 samples "t 106516 " 106520 5 "I 106522 " 106529 8 (#106521 not assigned) 106609 thru 106623 15 "s 106625 " 106630 6 "I (#106624 not assigned) (#106631 106632 106641 10 Total: 56 Project No. 30-79-3307 Subcontract No. 79-458-D NORTHWEST ARIZONA PLUTONICS 15 July 1980

Union Carbide ORGDP Geochemical Data Critique

Printouts of May 13, 1980 (Burger), received 6 June 1980 and 21 June 1980. ROCK SAMPLES LIST

153625 Not present (was in earlier printout). Map code BX 33-07 should be added to Form 11992.

153650 Mine water sample, sample type "Other" with remarks listed with rocks -- should be with water samples list, is TY-99. Only data provided is U.

153603 - 668 No portable spectrometer data.

153661 Rock chip -- TY-92, not a soil sample.

153666 Not present (was in early printout).

153.669 Only U, U-NT present; no other elements.

153670 - 672 No portable spectrometer data.

153673 - 689 No HF, LA, PB. 153695 No HF, LA, PB.

153699 - 700 No HF, LA, PB.

153710 - 717 No HF, LA, PB.

153721 - 729 NO HF, LA, PB. 153729 Anomalous Ag, other metals are not likely, could have been mixed with 153730

153730 Vein - shear zone; anomalous metals expected, not detected. 153732 No HF, LA, PB; no U-NT.

153734 - 735 No HF, LA, PB.

153749 - 750 No HF, LA, PB.

153763 - 776 No U-NT

153764 Anomalous Ag, Cu, Cr, Mo is impossible for this unmineralized Rattlesnake Hill pluton. Sample was mixed up or contaminated? -1- Geochemical Data Critique (Cont'd)

153777 No elements data; portable spectrometer data only 153778 -792 No U-NT

153794 - 800 No U-NT

153802 - 803 No U-NT

153808 Only U-NT reported, no other data.

153809 - 826 No U-NT

153822 Not present; Map Code BX33-07 should be added to Form 11992.

153827 No U-NT; No TOT CPM

153828 - 835 No U-NT

153836 Not present; add Map Code BX33-07 to Form 11992.

153837 - 838 No U-NT

153839 Not present; add to system.

153840 No U-NT; no TOT CPM, no EU.

153841 - 862 No U-NT

153863 Not present. Add Map Code BX33-07 to Form 11992.

153875 Not present. Add Phase Y (31) to Form 11992.

153880 Not a replicate sample Y. Our error, remove Y from T~7 enter Phase Y in 31 Form 11992.

153865 No U-NT data.

153901 U data only. Mine water sample, Sample Type "Other", see Remarks, should be with water sample list.

153902 - 906, 153908, 153910, 153912 - Mine water samples, Sample Type "Other" with remarks, listed with Rocks -- should be with water samples list.

-2- Geochemical Data Critique (Cont'd)

WATER SAMPLES LIST

TY is not designated for samples 153651 (stream), 153690 (well), 153691 (well), 153692 (well), 153693 (well), 153970 (stream), 153909 (stream) and 153916 (stream).

Mine water samples, "Other", see Remarks, 153650, 153901, 153902, 153903, 153904, 153905, 153906, 153908, 153910, 153912 are missing, reported with rocks. Only U data is reported for 153901.

Water sample 153916 is highest project number in printouts received at time of this report; received from Oak Ridge on 21 June 1980.

Number 158453 belongs to another project.

-3- NORTHWESTERN ARIZONA PLUTONICS Project No. 30-79-3307 BX-3307 Subcontract No. 79-458-D

Analytical Data Received as of 15 July 1980.

Sample List of Analyses Run by BFEC, G.J.O. ppm = U3 08 , Sn, W & F - on 35 samples. Others only partially. See comments below: Total no. NWA Site Nos. Sample Nos. Comments Samples

1 153603 ) 1 4 153606 ) 1 7 - 10 153609-153612 4 12 153614 ) 1 17 153619 ) (26 samples 1 19-23 153621-153625 ) no U3 08 results) 5 25-30 153628-153633 ) 6 33-34 153636-153637 ) 2 38-41 153641-153644 ) 4 43 153646 ) 1 ) 49-51 153652-153654 3 54-56 153657-153659 ) 3 59 153662 ) (9 samples F only results) 1 61 153664 ) 1 67 153670 ) 1

90-104 153694-153708 15 106-108 153710-153712 3 111-112 153715-153716 2 114-116 153718-153720 3 118 153722 1 120 153724 1 122 153726 1 129 153733 1 131 153735 1 133-134 153737-153738 2 137 153741 1 142 153746 1 (153748 not used) 144 153749 1 146 153751 1 152 153757 1

Grand Total: 70 OLD # NEW # OLD # NEW # OLD # NEW # 154013 106516 154050 106554 154087 106592 014 517 051 555 088 593 015 518 052 556 089 594 016 519 053 557 090 595 017 054 558 091 596 106 520 Not Used 106597- Not USE d 018 055 559 092 598 019 523 056 560 093 599 020 524 057 561 094 600 021 525 058 562 095 601 0- ~- 022 526 059 563 096 602 023 527 060 564 097 603 024 528 061 565 098 604 -J 025 529 062 566 .099 605 026 530 063 567 100 606 027 531 064 568 101 607 028 532 065 569 102 608 029 533 066 570 103 609 030 534 067 571 104 610 106 572 - Not LsEc 031 535 068 573 105 611 o 032 536 069 574 106 612 033 537 070 575 107 613 034 538 071 576 108 614 035 539 072 577 109 615 036 540 073 578 110 616 037 541 074 579 111 617 c 038 542 075 580 112 618 039 543 076 581 113 619 040 544 077 582 114 620 041 545 078 583 115 621 042 546 079 584 116 622 043 547 080 585 117 623 106625 -Not UsEd 044 548 081 586 118 625 045 549 082 587 119 626 046 550 083 588 120 627 047 551 084 589 121 628 048 552 085 590 122 629

049 553 086 591 123 106631- Not USEd OLD # NEW # 154124 106632 125 633 126 634 127 635 128 636 129 637 130 638 131 639 132 640 133 641 /. - ~ 5'

I;itTIMLS1 A.t1/.tI. A LA-i1a~d1C >WAl rat AIMP t .t:c fIL"'.A1L 1 MCI tali. 1

LIR SAMPLL 0. U. L. SAMI'L1 NUM..LIt( Ui S U/f I / 41/61 At. At A.. I. la NUI-ULR: ,1 LAI Lt -. L TV RkLP (PPU) UMIIUS/CM -- (E1l) (I'l) ( 'I'LI) l Ii,) l +71+) (I1 'a.) 153,47 4U-34.730 -113.0160 -3-0.3- '- 0.2.0 1.57 0..7.0 :, l. 7 1 2 2 353C48 40-34.1640 -1 1 3.%1 1 -3-01- "-- 79.00 51.3- 434.01 3 .3 <0.5 i'0 4 A3 3 53,49 40-3:.094 -113.41237 -3-01-'P- O5.0 .5 s1 .. , 40 .uC 'j4 .4 4 <1 +.5 14 a 1 - 4 4 15151 4t,-Jx.069 -l1 3.U>6.: -6- - , L.00 / 2000.00 .15.00 I 11.0 .-. <1 6 1'5690 40-4..0'1 -1133.194 -3- - '' -bI0.90 l7'.3o (4+x.(A 1 <10 (U.5 It) It 153(.91 40-34.474 -113.401 -3- - ou.lu 6294 1 0 /. 0 <2 <10 0.9 IOU l" 7 6 153692 41--34 .1 1 -g i 3.4 y4 -- 3- - awl 21 4.40 .E4)1 .. 0 I '.. 19 <1 i.I ',I "s l_ 7 153.93 40-34.591 -1IJ.Ilb6 -j- - -i 39.11 133.12 144.04 (. <10 0.0 .9,a l t 10 153759 40-15.109 -113.(19 -3-03- -at" E:..1 J5..J5 .09.17 J3. <0 0 2.7 11 1 1e 14 153900 40-34.404 -1. 3.t2J-3- 41.70 422..12 124.73 <2 <10 1., 113 Ll 19 1539 7 40-35.312 -114.129 -3- - 69.27 916.08 709.0? 3 14 13.2 74 15 5309 40-.35.300 -114.103 -3- - 40..3 '10.0Ul 40.41 4 22 .L U 144.v < a 20 16 15391 1 41,-.5. 4"+1 -114 .;'1 4 -3-U 1- 75.136 /J17.0 22 7. 13 - 6.d t,4 t l 21 153913 40-3$...29 -113.;14 -3-01- 11.00 4.1 1_..9.12 0 (<1l 0.6 1.10 1.c, t 22 -7 13914 40-3,.J51 -1 1.77 -3-01- 1:.51 144.162 9 93.09 3 (10 1.9 <123 24

19 15391 t 40-35.2131 -113.752 -- - 3.31 204.27 33.6U - (2 10U 0.9 1Il u 1 1 < 25 26 20 27 21 28 29 22 30 3 31 24 32 33 5 34 26 35 ) 27 36 37 28 38 29 39 30 40 41 31

32 43 33 44 45 4 46 5 47 6 46 37 49 S0 51

319 52 53 0 ) 54 55 .2 6 57 3 I) 4 60 5

J ______1Jt 1IlIWL T ARt1/.tJA tUl LWL. PAW. .. I .. I1( 111

lJ1 (,'a(l 14 t4AM'LL CA CLI 01 (l f IL K LI MG _ N _ Ma. NA 441 '1:.1 i _ 1a1 A (1.. PP" P(L-0.) #4 s S Pa/ I (I I'b- J I 1- 1' b' (1'I'U) ( 5 ' M) P 'us) I t ' o) I a -a -e4 . 153147 VC.9 <4 3 1<0 25.1 02 1 34.1 5 6 349. ,4 <40 1 u .4 2 2 15304(0 42.4 Z <4 2 <10 ts.0 119 14.0 1 (4 1:9.2 <4 Lu 1 (1.4 3 3 S 15 b4 9 14. 6 <2 <4 <2 <.10 2. 3 1;. a<4 15.0 <4 <40 001 4 4 . 15J4.1 1.'.0.7 2 <4 <_ <10 1.J t.S -3.5 <2 4 ,3.J ( - 1 ua.) 13 1 o 4 2 u (0 8 <:' 2 . .2 .. <2 .3 310U.2 t, 1 - It,31U# 91.1 (2 (4 1a 2 1..3 J1 29.. 2 14 44.U (4 (<4( ( I (0.a 14 153005 .2.1 <2 10 231 4.4 42 -0.0 <2 15 . J .7 <4 <(4 l <0.C. 1 12 1430b0 (04.7 < 4 < < 5 14.5 91 246.2 t3 10 9.1 <4 <40 13 15 4 ( t..1. < <. 4 (4 <14 1.9 4 25.2 3 44 to.7 (4 (A7 <4 * i (0..:1,5 Il1e 14 153900 92.0 <2 <4 3 22 3.0 32 15.5 - 35 54 4.3.7 <4 (40 15390 b7.n <2 <4 <10 2.1 2 2J .9 <2 <4 20 .4 <4 I. c 1 0.5. '91 15 240.b <2 <4 3.9 150.3 b4.5 (4 <40 153909 3 <10 9 4 5 < 1 U.a 20 16 15(911 10..11<< <40

3032 3 31 4 32 25 33 34 26 35 21 36

28 37 38 29 39 30 40 31 32 43 33 44 45 4 46 5 47 6 48 49 50 51 9 52 0 53 54 55 2 56 57 3 58 4 59 60 UI .3 4~~r r-l.F ~ 1 &1t4A ILlil li~l (.2 (~JATftjJ A T r - I -5 tJ~ldtIltild II~LS1 tet.ST ARAH I .(lNA it'LU . l . ;.a, F , 8r, V At, t.. I >& L I I tj ; U I .

,112 S.A.M L !.U 'I.) T 1 V Y / /A il I -AK M-k -K cl IA/L 1'1, .3,

1 4)-U.LIL (1P-M) (Pl3i) C( I4L) (cI-l.) (PP1k) ((I1 -) (1i"' ) ( M) C-(F M) ( i'M) Il'M) C-e 2 15t:3 2.2 1A. 7 4.L. b .3 3. 2 . :39 0.9-s LSMAi 4t 5 . b tO <2 7 1 1499 <2 13(3 U.1, 3 l51i 9 1 .y 4 43 <'" <4 1 U <2 1' I f1. . 4 4aSO 3bJt1S 13.2 <4 <2 <4 <1 45 <.. I0 1.1j . . ~ i5bJu9O 13.4 t,9 < :'1 . Ii <..? < <5 31 . .i I.. 6 15.11>91 l 3> .:' .53 <2 3 < 1 9 <2 J 1 2..J1 7 6 a -.2 . ( " 8224 -,.a , 9 7 1 ,Ju93 19.7 1445 4 <4 <1 <4 b 12. 0. 1344. 10 153759 1b.13 1C05 <2 1 1 55 4 .5 0.4 /.: 137 0 15.0 340 <2 <4 <1 39 <2 13 1.3. :i" 11 12 6 1.3 -1.3 395 693 <2 <4 <1 213 <2 ~b U.74 J 22 153934 12.7 b.0 <2 <4 < lb5 (2 90 0.44 23 111 1539415 1. U < 35 tli 25 19 15393b 3I.6 bO ,<2 <4 <1 22 <2 62 1.21I 1./. 26 20 27 21 48 29 22 30 23 31 4 32 33 25 3444 26 35 27 36

28 37 38 29 30 39 31 41 42 32 43 33 4 45. 34 46 47 6 48 49 379 S0 S1 52 531 0 54 41 55 2 56 57 3 44 59 45 - 60 A,< n00, .[ J -

L i J . iy C " PAGE NtUIIHWL 1 ANI1Z(45A (XdCS aC )53/,)7 /53 PAGE I..UTSECTION 1 OF3

LE SA4PLL 1. t. L. SA:4-L, NUML4.6 U U-NT AG AE A CE C) CR dliULR i LA LUN1. L TY RLI (1'M PP 1) PM (PP PM X FPM) (PPM, 153603 '0-34.')14 -113.521 -3-92- 1.07 1.40 <2 7.17 <10 765 2 2.65 79 15 60 2 153604 40-34.915 -113.494 -3-92- 1.19 1.10 <2 6.59 <10 745 2 1.44 56 5 19 3 3 JC55 4u0-4_.02 -113.173 -3-92- 0.63 0L0 <2 7.53 <10 1010 1 2.46 44_ 14 2d ..4 lSJU4 e '0-J5.usb -1 13.17% -3-92- 8.45 16.40 <2 6.21 (1 0 270 8 0.60 99 <4 8 5 10 27 6 153 1Ju7 40-35.053 -113.K)0 -3-92- 2.78 2.20 <2 6.98 <10 893 2 2.44 41 153608 50-35.637 -113. 07 -3-2- 1.63 0.90 <2 0.64 <10 37 1 <0.05 <10 <4 8 7 6 153609 40-35.861 -113.t.59 -3-92- 2,Q7 4.70 <2 6.31 <10 463 2 0,96 140 =: 153(0l 4u-35.627 -113.136 -3-92- 1.44 1.40 35 3.01 <10 196 1 0.38 20 (4 6 9 1 53611 40-35.090 -113.,31 -3-92- 1.61 2.60 <2 6.10 <10 465 4 0.57 22 <4 8 10 153612 40-34.#170 -114.021 -3-92- 1.09 0.70 <2 5.82 <10 531 1 1.16 12 <4 8 11 _ 15J613 4U-34.146 -11J3.964 -3-92- 6.78 7.40 <2 5.77 <10 563 6 1.52 15 Q 12. o 155,014 4U-.4.-..2 -113.012 -3-92- 19.27 20.20 <2 5.92 (10 104 3 0.71 73 <4 7 13 153615 40-34.159 -113.4S0 -3-92- 4.95 4.70 (2 6.70 <10 691 3 1.70 163 8 37 14 153616 '0-34 .11(3 -1 13.72 -3-92- 0.76 0.40 <2 6.81 (10 187 2 5.49 <10 48 60 .5 12 153617 40-34.655 -113 1.20 -3-92- 4 4.70 <2 6.52 <10 760 3 1.87 264 7 13 1536113 40-34. 730 -113.v1 -3-92- 5.60 5.30 <2 b.14 (10 706 5 1.39 121 <4 10 153619 40-34.709 -113.934 -3-942- 6.86 9.90 <2 6.01 <10 542 4 1.03 236 <4 10 1e 153620 40-34.706 -113.9.30 -3-92- 2.62 3.20 <2 8.58 <10 718 2 0.40 58 4 12 19 5 13,21 40-31.726 -113.164 -3-92- 6.52 9.60 <2 5.10 <10 557 5 1.45 347 6 12 . 20 16 153622 40-34 . 120 -1 1 3. 1k 5 -3-92- 18.76 1 7.60 (2 5.60 <10 630 4 1.50 227 5 12 21 ISJL23 10-34.470 -113.635 -3-92- 6.96 8.00 <2 5.131 (10 1101 5 1.46 200 4 10 22 1)l 155624 40-35.017 -113.037 -3-92- 54.59 300.50 <2 6.98 <10 648 3 0.07 1314 30 146 23 t 15J26b '0-34.119 -113.724 -3-92- 0.29 1. 19 <2 7.34 <10 1243 3 2.7 41 34 24 9 1T: 1536:'8 40-34.,;64 -113.749 -3-92- 1.40 1.20 <2 6.81 <10 1110 2 1.68 61 4 10 25 15329 40-34.1137 -113.7)6 -3-92- 1.31 1.50 <2 6.08 10 1061 3 2.17 42 <4 7 26 153030 40-34.627 -113.788 -3-92- 1.58 2.30 5 1.40 39 209 1 1.20 <10 <4 6 27 21 1__4 0-34 . L -z.I .A ___6 ___0 _____354 45S _L_. 9-9- 22 1SJ(332 '10-34.3131 -113J. J -3-92- 1.37 1.60 <2 7.24 (10 1045 3 1.93 63 5 9 29 -- 15J633 410-35.4146 -113. +10 -3-92- 5.23 7.50 <2 6.16 <10 556 4 0.99 212 4 9 30 23 153634 40-34.132 -113.944 -3-92- 13.80 12.90 <2 5.89 <10 503 4 0.82 229 (4 9 31 24 153uJ5 40-34.1319 -113.914 -3-92- 4.15 4.30 <2 '.7 <(10 664 .9 124 932 25 131.3 40-J4. 35 -1 1 J.932 -3-92- 10.53 8.80 <2 5.13 (10 370 5 0.80 186 <4 9 33 - 1:.637 40-35.143 -113.916 -3-92- 7.35 4.30 <2 6.55 <10 1293 4 0.47 299 <4 7 34 153638 40-35.094 -113.887 -3-92- 1.98 3.40 <2 6.31 <10 1624 5 0.77 488 4 10 35 27 53+9 40-35.07, -113.1- 3-92- 7.74 7.50 9 5.31 17 671 3 0.78 227 <4 1J1 . 36 28 1 3J640 '0-35.,74 -113 .71 -3--92-- 2.42 2.50 <2 6.90 (10 647 3 2.95 38 13 40 37 - 153(41 40-35.071 -113.871 -3-92- 6.09 7.40 <2 5.95 <10 263 4 0.19 47 (4 8 38 29 15'42 '0-5.071 -113.034 -3-92- 26.08 27.10 224 5.13 26 354 3 0.12 39 <4 15 39 30 153'>4J 40-35.071 -113.161 -3-92- 28.48 30.80 22 5.97 45 508 4 0. 22 <4 25 40 31 153u4 40-35.071 -1 .I04 -3-92- 28.29 23.90 21 U.60 2 188 3 0.17 45 5 8 11 12* 153o45 40-S.075 -113.616 -3-92- 0.90 0.80 <2 7.11 <10 1154 2 1.66 48 4 8 4Z - ". 1.1,46 40-34.828 -113.789 3-92- 89.04 159.40 2 2.69 29 428 1 0.10 78 <4 8 43 33 '. 153650 40-J5.076 -1 13.01 J-399=W - 660.71 2 86,00 9 59 1 91.50 _< 30 < <4 44 4 ~'. 153052 40-.Y.413 -113.77 -3-92- 9.64 9.30 <2 6.83 <10 431 3 3.32 283 <4 11 45 - 153u5J ' 0-35.43', -113.,01 -3-92- 5.23 29.70 <2 3.23 <10 532 3 0.15 165 <4 11 46 153.1!4 40-35.446 -1 13.816 -3-92 7.87 8.80 <2 6.42 <10 767 5 1.04 395 <4 11 47 153655 40-35.41 7 -113.916 -3-9 5.46 3.50 2 6.09 10 1436 427 8 11 48 r 153656 40-35.45 -113.U 0 -- 92- 13.23 9.30 <2 6.18 <10 855 6 1.14 31 4 11 49 -- 153o57 40-3.455 -113.426 -3-92- 10.91 9.40 <2 5.95 <10 904 5 1.46 349 5 13 50 153658 40-35.446 -113.022 -3-92- 4.68 5.704 <2 5.99 <10 512 2 0.67 206 <4 8 51 29 153659 40-35.443 -113.U17 3-92- 6.28 7.80 <2 7.35 <10 7081 !R4Ot 58 !C4 7 52 13 53 40 15.0o0 40-5.442 -113.120 3-91_- 6.12 7.50 <2 6.19 (10 979 4 1.4 5 299 6 153661 40-35.469 -113.043 3-91- 0 2.14 2.80 <2 6.53 <10 1170 3 1.36 272 4 14 54 1- 15362 40-35.454 -113.61 3-92- 7.52 11.30 <2 6.05 <10 383 5 0.73 144 <4 7 55 2 15363 40-35.4 1 -113.t19 -3-92- 6.47 9.10 <2 5.66 <10 663 5 1.15 395 4 12 56 3 57

4 59 15 NLIOTIlWLST AIdILLfA ILUTLxIIC: PAGE 1 SEC11N 2 OF 3 OR SAMI'LL C(. FL HF K LA L1 MG MN MU NA NLI NI P SC SR 1 LT-itIi WIUTV (4X (I14M) () (PPM) (PM) (X) PPM) (14M) (%) (1W'MI (PPM) (PPMIUP14 153603 30 4.54 <3 1.68 93 17 1.41 531 <4 2.26 <4 31 1367 1 0 441 2 2 153604 12 2.10 <3 2.18 80 16 0.51 419 <4 2.20 5 6 377 2 287 3 3 153605 29 3.63 <3 1.44 57 39 1.50 565 <4 2.48 <4 19 926 9 633 4 4 TU6J 1.15 2.9 110 42 0.12 3J4 <4 1.8 1 8 <2 202 3 69 s 153607 61 4.14 <3 2.34 50 15 0.92 834 <4 1.65 5 8 810 1 2 392 6 153608 3615 0.113 4 0.05 4 64 <0.05 27 <4 <0.05 <4 <2 <5 2 10 7 6 1.,3609 26 2.97 <3 2.69 152 27 0.48 413 <4 1.55 24 9 904 8 11_ 17I D3 3~ 2. 3 .72 2 18 U.8 68 14 0 <4 2 1b4 15 9 15_1611 8 0.90 4 1.89 21 8 0.09 212 (4 1.83 20 2 544 1 190 10 153612 7 0.78 3 1.32 17 7 0.20 132 <4 2.15 <4 2 146 1 229 11 9 15Ju13 12 3.54 <3 2.13 203 27 0.49 621 <4 1.52 30 3 799 ,10 100 12 o 1 i 3- U40.81

44 45 60 8LJI:1I.WL.ST Al1LIISA I'It1t411C5 PAGE 1 SLC1 ILUN 3 OF 3

Ult _;4'i1'L l= T t 1 T I V 7t. 'i AUI--J T AM 111 I( (PKK FU CU FF l CPT" i. r s.1L 1 ;(,4'i";1T 1) ( ;iRF) ( s'Pti ins(PfPM lMPPM) ( ) PZPPPM) (P) (PM) (CPM) 2 I',3 .U3 3 5144 91 94 17 3 2 1530 4 8 2499 44 4 7 28 6 3 3 5J6', 4 3771 113 71 34 U 4 4 15J60:6 54 J1 1 8 >0 87 28 153607 7 3447 79 66 21 1 6 S!JO(R 3 61l 1b 28 <28t 71 2 20 6 15360 17 3169 i a 153610 12 367 12 2026 3 2811 9 1530l11 11 400 13 30 7 22 10 13612 1 717 12 29 23 1 11 153613 45 4909 63 18 16 27 12 153014 41 555 t 40 35 41 13 153-1.5 22 40411 71 59 27 2 14 13016 2 7237 234 97 24 1 15 12 153o17 27 4177 64 59 11 5 16 , 15361 U 2926 32 72 19 26 17 151619 65 278 27 78 62 19 0.0 18 - 19 153205010904316130 5 15.3321 62 4458 59 925 31 20 6 15c22 73 3/63 45 22 25 20 21 153023 10 4648 43 119 14 16 22 15Jb 4 122 14300 269 604 49 82 0.0 23 153626 2 5101 67 88 2 2 1 15J(>28 J 2534 46 47 6 0 0 15>3629 3 1159 32 40 2 5 153o30 4 439 <2 77 2 122 0.0 24 21 153,31 9 1075 29 46 6 3 22 153132 3 2828 61 145 4 0 29 153633 59 223 28 90 49 22 30 2 15J634 110 2175 19 76 139 23 24 15J635 42 2129 18 60 26 16 32 25 153830 9 2222 19 69 120 4' 15J637 36 2213 26 40 30 43 24 26 15J630 1' 2007 42 60 26 29 35 27 15.539 10 1616 24 115 9 88 36 28 153640 6 4 1 1 5 1 16 85 10 4 37 153641 35 550 9 20 52 26 38 9 153642 13 1134 49 274 21 2791 30 15304:3 8 1707 92 311 7 921 41 Jt 153644 24 441 12 680 2 0 15.5645 6 2199 41 75 4 4 47 153646 5 1097 2 31 6 19 J 1d, 1 13650 <(2 <4 14 C 44 34 1536(52 41 2523 37 21 9 10 50 153653 56 632 17 15 28 2 5146 15354 61 3401 30 59 34 41 36 153655 12 7300 75 116 13 26 48 37 153656 6 4499 443 81 36 37 49 7 15. 7 41 4430 58 75 48 37 5 15365,3 i1 1264 15 14 35 12 9 1' 3659 34 522 15 37 24 0 52 40 1!53800 31 4397 52 77 26 31 48 153661 39 3J70 36 66 23 9 54 153662 33 1470 13 39 28 41 2 13663 63 3336 38 76 29 44 56 57 NtJ:TIIsJLS1 AI ItI-IJA I'LUTUINICS PAGE 2 SECT ION I OF 3 60

(112!-APLL U. (1. E. SARI LL NUl'JLi l U U-N AG AL l ISA E CA CE CO CR S NIJI4E ST LAT LD - L I 1LP ( (PPM)IPP (P4) (P) PPM) ( ) (PPPMT 153664 40-35.-40 -113.19.7 -3-92- 7.54 0.70 <2 5.96 <10 743- 4 0.86 333 <4 12 2 2 153uo5 40-35.43 7-113.1034 -3-92- 6.95 8.10 < 6.11 (10 608 4 0.138 292 <4 9 3 3 { (. 153b67 40-35.379 -1 1 J. 727 -3-94- 2.02 2.00 <2 7.099 <10 603 2 1.23 2_4 <4 11 4 4 i- 3 uiT -.. TufI- Ii. >9 -3-92- 1. [ .2 6.6 < 4,4 2 0.90 18 <4 9 5 - 15.S>69 411-35.419 -1 13. 712 -3-92- x.49 4.50 6 155,70 40-35.407 -113.107 -3-92- 3.45 2.70 <2 6.06 <10 867 3 0.47 171 <4 7 7 6 __ l3671 40-35.407 -113.(09 -3-92- 2.05 2.80 <2 6.89 <10 1461 3 2.09 285 4 4 a 153J12 40-30 1J3.a 1 -3-92- 3.4 4.0 (2 b.64 <10 829 3 2.15-303 6 8 9 153673 40-34.414 -11J.651 -3-92- 3.60 3.50 2 5.26 <10 541 6 0.73 135 6 4 10 . 153074 40-34.394 -113.(35 -3-92- 7.0 7 5.80 <2 5.45 <10 1048 10 0.93 531 15 5 11 9 I$375 40-34.452 -113.034 -3-92- 3.44 3.40 3 5.19 <10 956 9 1.45 274 9 5 12 10o -173 U76 -J'..'1 -1 1T'-'2 -J.- 7.T -- 5.90 (2 5 .4 - 1596 3 0.30 9 2 13 15:3677 40-J4.-aJO -11J.510 -3-92- 4.14 6.40 3 5.03 <10 628 5 0.75 173 4 2 14 !l 153(78 40-Jq.491 -1 13.466 -3-9:- 4.35 2.40 4 4.91 <10 550 2 0.18 79 <4 3 15 12 15JU0 40-34.414 - 1 J. 401 -3-92- 4.0(3 3.60 3 5.27 <10 546 3 0.42 119 <4 3 16 13 15->634 -34.091 - 1J.464 -3-92- 14.3" 2.0 <2 5.38 (10 194 6 0.58 53<4 -~ 17 1531,82 40-34 .15 -113. t66 -- 92- 22.90 15.80 <2 5.58 - (10 564 11 0.89 273 10 6 18 14 15.3i633 40-34.501 -1 J. IU7 -3--92- 2.14 1.90 <2 5.74 <10 1205 9 1.29 357 12 9 19 15 153634_40-34.592 -113. 744 -3-92- 2.97 4.20 <2 5.49 <10 1160 9 1.21 287 10 9 20 32.01 40-i. -3./4- -< 5.2 . v<)10 713 8 *.79 532W 2013 14 21 15J16 40-34.470 -113.521 -3-J2- 6.50 5.90 <2 4.79 (10 643 5 0.68 328 5 5 22 17 15307 '0-34.504 -113.487 -3-92- 4.18 5.00 2 5.16 <10 547 5 0.62 335 4 5 23 is 15_4608 40-34.504 -11J.4174 -3-92- 13.86 12.80 <2 5.38 <10 462 4 0.25 214 <4 4 24 ~TuB -- 40--~34 .U-T-3.4 5--9 -93 21) 915j094 40-35.170 -113.639 -3-92- 5.06 6.00 <2 5.77 <10 379 5 0.39 323 <4 3 26 -1' j1s95 40-35.170 -113.tAO -3-92- 7.99 10.60 3 5.27 <10 388 7 0.36 385 <4 3 27 1 153.96 40-35.105 -1 J. 0 O -3--92- 3.62 4.10 <2 6.07 16 406 4 0.58 226 <4 2 28 ?2 I537T -a-~T7:-- ~1 G .~3U~~~~U--3---~~22 ~-~.-~~

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NU!ILIER LA LuG; L IY H ('PPM) (PPM) (PPM) () (PPM) (PPM ) (PPM) PPM) (PPM A PPM) 1 153725 40-35.097 -114.100 -3-92- 1.71 1.80 <2 5.39 <10 1559 4 1.38 158 6 1 2 2 153726 40-35.127 -114.(i9 -3-92- 1.13 1.70 42 5.20 <10 1612 6 1.40 103 9 1]3 _ 15307 40_-5.12 -114.071 -3-92- 2.Z 0. 4.92 <10 533 3 0.68 56 _4 4 4 153728 40-3,.130 -114.060 -3-92- 3.15 ;.10 <2 4.39 <10 750 7 1.35 359 10 3 5 153729 40-35.118 -114.05 -3-92- 5.54 4.50 4 4.27 <10 292 7 0.76 19 6 1]6 153730 40-35.124 -114.048 -3-92- 1.01 1.40 <2 8.67 <10 231 2 2.06 <10 6 1 7 6 153(31 40-35.1111 -114.I.b -3-92- 12.97 15.70 <2 6.26 <1 < 393 2 0.58_ 316<4 1 8 153F32 40-35.117 -114.01 -3-92- 3.54 <2 2.86 <10 414 5 0.55 246 4 <1 9 15.3(33 40-35.116 -114.066 -3-92- 8.23 9.10 <2 6.51 <10 619 2 0.96 444 <4 2 10 153734 40-35.116 -114.066 -3-92- 4.65 5.50 <2 5.32 <10 652 4 0.43 464 5 2 11 153735 4U-35.109 -114.067 -3-92- 14.69 14.30 <2 5.07 <10 434 12 1.18 I.0.217 10 153736' 0-3.109 -114.07 -3-92- 11.43 18.40 <2 5.58 <10 341 5 2.12 1626 8 3 13 153737 40-35.109 -114.070 -3-92- 7.96 11.50 (2 6.97 <10 483 2 0.76 421 <4 2 14 153738 40-35.109 -114.070 -3-92- 4.56 6.10 <2 7.22 <10 386 1 2.59 168 <4 1 15 12 153739 40-3.1.'3 -114.009 -3-9- 4.65 6.90 <2 8.77 <.10 795 26 S4-~ 16 13 533740 4 0- 3i. 12 -114.074 -3-9 - 3.72 5.00 <2 7.55 <10 611 3 1.00 367 (4 2.11 153741 40-35.109 -114.074 -3-92- 11.69 16.50 <2 6.39 <10 477 2 0.76 400 <4 153742 40-35.109 -114.075 -3-92- 10.06 14.00 <2 6.56 <10 396 2 1.45 410 <4 2 19 _ 1_3_43(4-.109 -114.075 -3-92- 24.05 29.80 <2 6.71 <10 257 2 0.54 612 <4 2 20 6 1:3 44 40-35.106 -114.u73 -3-92- 4.32 6.40 <2 7.00 <10 677 2 0.88 347 <4 1 21 153745 40-35.103 -114.071 -3-92- 2.34 3.80 <2 6.39 <10 438 2 0.77 84 <4 2 22 15374b 40-35.102 -114.074 -3-92- 5.62 7.50 <2 6.70 <10 56 2 1.17 311 <4 2 23 24 1! 153747 40-35.102 -114.174 -3-92- 8.966 0.80 <2 6 -5 10 470 49 43 1 53-74-9~~4 0-~35.9 -114.070 -9 - 4. 6 .. 80 2 5.32 <10 731 5 0.9 92 5 5 25 153750 40-35.106 -114.064 -3-92- 16.21 17.60 <2 4.93 <10 263 4 0.85 191 <4 3 26 0 153751 40-35.103 -114.062 -3-92- 8.96 10.60 <2 6.58 <10 544 3 0.80 362 <4 2 27 21 153752 40-35.103 -114.082 -3-92- 14.78 17.40 <2 6.00 <10 461 2 0.70. 327 4 28 4 29 22 1353 40-35.107 -114..A2 -3-!42- 2.53 3.50 <2 6.92 <10 925 3 1.21 345 <4 153754 40-35.104 -1 14.100 -3-92- 9.43 10.80 <2 6.87 <10 265 1 0.58 114 <4 2 30 153755 40-35.1100 -114.104 -3-9 - 3.27 5.20 <2 6.64 <10 100 2 0.28 62 <4 2 31 24 15.3156 40-35.093 -114.019 -3-92- 12.58 15.50 <2 6,45 (10 489 2 0,70 348 <4 32 25 153V57 40-3.091 -1 4.09 -3-92- 3.27 3.70 < ~ 7.00 <10 7 0.58 177 <4 3 33 153738 40-35.091 -114.095 -3-92- 4.41 4.10 <2 6.74 <10 581 2 0.24 275 <4 2 34 4 35 26 1 5 3 7o3 40-35.200 -113.912 -3-92- 2.46 <2 7.39 <10 963 2 0.64 126 <4 27 153 T4 40-35.204 -113.914 -3-92- 4.38 36 7.153 47 726 6 0994 1!0 23 36a 28 15J705 40-15.2U0 -113.409 -3-92- 3.20 <2 8.43 (10 743 3 0.94 89 <4 5 37 - 15J7u6 40-35.204 -113.b6 3-')2- 14.85 <2 8.00 (10 733 2 0.83 190 <4 29 153767 40-35.170 -113.639 -3-92- 3.27 <2 6.29 <10 946 4 4.01 242 18 122 3 30 153 oi 40-3:.107 -113.639 -3-92- 2.60 <2 7.66 <10 526 5 0.33 136 <4 4 40 31 1537v 40-35.67 -3.(4A -2-4.58 -Z<2 ~7.S6 ~<10 578 .43 23'[<4 541 153770 40-35.179 -113.785 -3-92- 7.17 <2 7.33 <10 4625 6 2.75 439 16 140 41 153771 40-35.172 -113.760 -3-92- 10.74 <2 8.13 10 1322 5 0.65 301 <4 5 43 33 153772 40-35.1(2 -113.10 -3-92- 5.79 <2 6.85 <10 4783 7 3.1 65( 1.7 170 44 4 153 73TU-35.1 2 -113.fu1 -3-92- 7.27 <2 7.67 <10 2526 6 1.52 404 6 28 45 153774 40-35.171 -113.157 -3-92- 6.00 <2 8.60 <10 2303 7 1.29 406 4 3746 153775 40-35.174 -113.777 -3-92- 5.93 (2 7.92 <10 4049 5 2.09 449 14 164 47 16 153776 40-3;1.180 -113.7(36 -3-92- 4.31 <2 7.98 <10 971 5 0.67 392 <4 ]L]_48 7 153 77 40-35.1t4 -113.113 -- 92- 49 50 - 153 778 40-35.184 -113.788 -3-92- 5.15 <2 8.32 <10 975 3 0.30 326 <4 8 153779 40-35.1112 -113.190 -3-92- 7.14 <2 7.58 <10 907 2 0.13 429 <4 15 51 19 1537(.0 40-35.188 -113.795 -3-92- 3.93 <2 8.90 <10 1008 5 0.59 377 <4 11352, 44 53 0 1J7j U4-35.109 -T3.000 -3-92- 5.64 <2 6.63 <10 2212 6 1.52 403 7 1537;2 40-35.196 -113.197 -3-92- 2.95 <2 7.92 (10 1033 6 0.49 340 <4 9 54 1 153783 40-33.196 -113.781 -3-92- 6.39 <2 7.41 <10 765 6 0.89 428 <4 10 55 2 153(734 40-3-,. 191 -1 13.775 3 -2- 4.50 <2 7.22 (10 1607 6 0.95 392 4 - 21 -56 57 3 759T8 S 60 NL11TL1LST AN 14t A t.UIwLICS PAGE 3 SECTION 2 OF 3 OR SAMI'LL Cu FL HF. 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IQ8._-28 22 1J753 J9 2140 lb 104 30 -15 5516 5.6 428 12.5 112 56. 0 108 29 153754 90 616 3 66 42 63 6938 5.9 492 15.2 148 79. 5 152 30 153 T55 35 192 3 49 38 24 4452 5.5 396 12.8 94 38. 9 77 31 24 153756 13'0 1303 7 71 102 13 14090 5.0 715 34.8 333 176. 1 338 32 25 153157 5. 756 S0 42 69 6710 5.2 464 16.5 149 75. 9 146 33 153758 151 507 16 25 55 16 8997 4.8 581 31.0 247 111. 2 218 34 153763 41 10J2 8 44 50 <10 5653 5.6 426 18.0 113 36.4 6 75 35 27 13764 49 970 27 60 74 19 4219 4.0 3 3 219 119 27, 7 6 ______36 2 1t3 65 5 962 6 49 69 <10 5155 5.0 373 12.2 95 41. 6 82 43 157 97 1029 9 45 132 11 9532 6.6 601 27.4 203 84. 7 167 38 193767 51 6216 89 95 148 25 4735 3.9 313 10.8 88 40. 3 79 39 30 153768 30 937 12 9 46 11 9077 5.7 553 17.1 196 116. 4 221 40 31 153709 61 775 1 6 61 32 7385 6.6 523 20.9 168 76. 5 149 41 153770 47 7618 121 117 132 47 6572 4.7 405 14.1 126 63. 4 122 42 153771 150 1366 12 39 93 39 11809 3.1 509 22.6 251 146. 3 278 43 33 153772 40 7934 126 110 111 31 7?37 5.2 431 12.8 127 9. 3 133 44 S 5153//3 92 4906 64 70 61 48 11411 4.3 529 24.3 227 118. 5 228 45 153774 18 3118 50 62 35 33 6437 7.6 551 16.9 133 58. 9 115 46 15.5775 54 0357 91 112 76 41 6134 5.8 463 10.6 130 80. 4 152 47 36 153776 16u 1921 24 48 71 27 7723 5.4 470 13,4 J4 8s 9 1 3 48 1 1;37 7393 6.3 506 12.2 141 84.4 6 160 49 - 153778 147 669 14 26 55 26 10934 3.8 546 26.9 254 132. a 257 50 153779 92 2364 29 41 50 25 8381 4.9 502 19.0 187 101. 5 194 51 153780 129 783 28 10 58 <10 8370 5.8 55 21.8 181 84, _ 352 0 1l5/01 121 2593 ,l 67 61 48 7020 4.7 442 22.1 155 60. 1 120 53 1537t'2 111 1478 16 37 54 41 10042 5.4 574 23.0 220 116. 2 223 54 153783 118 11101 23 62 85 40 9928 4.0 539 29.8 246 114. 8 224 5s 2 1!,3184 831 2924 & 3 62 6 44 802 .83 514 11.5 19L 10. Q. 203 56 57 Se 3 9 60 N1JITlTMLSiT AllI LfAlA ILUTOICS PAGL 4 SECTION 1 OF 3 (12 SAMPLL.. 1. 1. E. 5Ar1'LE NUM1ILR U U-NT AG AL B BA BE CA CE CU CR

SU $T JLEXLA L1)& L TY REP (PPM) (PPM) PPM%) (X) (PPM) (PP. ~) ) PPFTT(PPM 153 765 40-35.209 -113.745 -3--92- 3.17 <2 7.04 <10 679 7 0.41 233 <4 7 2 2 153736 40-35.214 -113.747 -3-92- 8.81 <2 7.04 <10 360 4 0.43 171 <4 4 3 3 153717_40-35.208 -113.777 -3-92- 2.51 <2 7.22 <10 35 5 0. W- 41 s4 4 17I3 40--35.2I8-11 .l9 -3-92- 4.33 <2 7.05 <10 82 6 0.74 415 <4 8 s 153719 40-35.211 -11J.1093 -3-92- 2.85 <2 6.77 <10 927 4 0.67 300 <4 9 6 153790 40-35.211 -113. 02 -3-92- 4.67 <2 6.71 <10 903 5 0.61 200 <4 8 7 6 153791 40-35.210 -113.)3 -3-92- 2.19 <2 6.55 <10 802 3 2.17 171 <4 10 A 15J ' 40-JS.200 -iT.733 -- 9.:- 13.17 <2 6.8 <10 903 6 1.19 1033 6 48 9 153793 40-35.213 -1 13.727 -3-92- 7.16 5.40 <2 6.71 <10 390 4 0.36 155 <4 3 10 153194 40-35.219 -113.004 -3-92- 2.98 <2 7.10 <10 271 1 0.49 10 <4 S'11 9 153795 40-35.274 -113.166 -3-92- 1.75 <2 7.32 <10 743 3 0.51 78 <4 5 12 1 53(9_ 41-35.d9 .-i.1 --92- 1.91 (2 8.20 10 40 2 1.78 44 -- 153797 40-35.406 -113.1103 -3--92- 2.18 <2 7.09 27 1663 2 1.62 211 5 9 14 15379* t 40-35.406 -113.003 -3-92- 3.90 <2 5.48 <10 1299 2 1.87 186 5 5 '5 12 153799 40-35.392 -113.710 -3-92- 19.70 359 5.38 48 638 2 0.69 <10 25 34 16 17 - ~-92- 4.42 2 (.91 (10 826 1.50 1 3 53UU 40-35.33 -113.3 6 153101 40-35.351 -11..772 -3-92- 4.24 4.40 <2 8.03 11 737 2 1.16 28 <4 11 18 153802 40-34.931 -113.794 -3-92- 1.59 <2 8.85 <10 1647 2 1.87 57 <4 4 19 s 153003 40-34.935 -113.823 -3-92- 5.71 <2 10.59 <10 697 5 0.87 117 6 13 21 1-_,"16 40-35.319 - "4. 114 -G -92- 24.50 21 153309 40-35.319 -114.114 -3-92- 340.00 16 4.18 22 125 1 0.06 21 18 2 22 153310 40-35.295 -114.120 -3-92- 1.59 349 0.22 11 15 <1 0.06 <10 6 <1 23 16 153611 40-35.340 -114.132 -3-92- 66.49 <2 5.08 <10 283 3 9.23 2548 <4 56 24 125 1-5 J" 4-J.341 -114.133 --92- 2.49 <2 6.22 <10 6061 1 0.07 2 <4 153113 40-35.340 -1 14.134 -3-92- <0.25 <2 6.27 <10 1898 2 2.49 201 5 3 20 153114 40-35.32 -114.161 -3-92- 3.85 <2 5.18 <10 649 2 0.57 36 17 44 1 153815 40-35.371 -114.161 -3-92- 1.74 <2 6.53 <10 X204 1 0.09 159 <4 8 28 29 2 5'4~*3 -4.3 ,-9-0.25 (2 7.74 (10 lbB7 2 0.73 54 -1 J153817 40-35.365 -114.138 -3-92- 2.56 2 7.07 18 590 4 <0.05 35 33 4 30, 3 15331t 40-35.360 -114.151 -3-92- 1.27 <2 6.82 <10 602 3 0.07 27 <4 4 24 153819 40-3J.3o0 -114.151 -3-92- 2.13 <2 6.03 <10 708 2 <0.05 86 <4 6 32 33 25 15- U- 4-35.359 -IJ .15 -3-92- .4 b.b4 10 424 3 .4 l67..153:121 40-35.359 -114.151 3-92- 1.31 <2 6.26 <10 848 3 <0.05 63 28 1734 1531123 4U-35.363 -114.149 -3-92- 1.54 <2 6.01 <10 329 4 1.02 17 42 425 35 27 153824 40-35.366 -114.135 -3-92- 1.23 (2 6.80 <10 627 3 0.58 39 <4 8 36 .2 I19 7 2 28 15-1125 40-3-37V-1T4*154 -3-.2- .TTU0*J< 127 38 1 153026 40-35.339 -114. 144 -3-92- 11.50 46 5.27 (10 134 1 0.06 20 5 76 3. 29 1153827 40-,.337 -1 14. 143 -3-92- 466.00 281 0.35 <10 16 <1 <0.05 <10 99 5 39 30 1532(3 40-35.336 -114.146 -3-92- 26.71 <2 6.08 (10 666 1 0.21 60 9 177 _ _40 6 3 15 2 4U-J5.-RJ> -T1 14 . W, - U.cr 2 U.JI 5 U.U6 1U <4 41 153.130 40-35.333 -114.142 -3-92- 12.79 203 2.86 <10 46 1 0.45 21 19 195 4? 153031 40-35.333 -114.142 -3-92- 3.79 <2 4.39 <10 510 1 <0.05 82 <4 5 4 33 153632 4U-:35.332 -114.141 -3-92- 54.21 6 4.95 17 838 1 0.08 82 __ 6 6___ 4 15-3 -i U- J._ =T 1J4. 39 -J-92- -- 9.33 253 1.5 I 84 <1 <0.05 CT 7 45 133'134 40-35.341 -114.142 -3-92- 1.92 <2 7.15 <10 391 2 0.05 21 <4 3 46 ja15J035 40-35.32*1 -114.142 -3-92- 123.30 26 4.93 <10 221 2 0.86 49 18 6747 6 1531137 40-35.326 -114.141 -3-92- (0.25 2213 0.29 <10 20 (1 (0.05 <10 <4 4 48 538 4-3- U -T4.142 ,3-61- 53.04 119 4.18 (10 325 U.09 66 15 49 1 3 1503.s40 40-35.326 -114. 133 -3-92- 798.80 516 1.17 <10 18 <1 <0.05 <10 46 50 76 1531341 40-35.324 -114.122 -3-92- 23.49 24 6.06 13 999 1 0.06 12 4 t5 51 19 153142 40-35.323 -1114.128 -3-92- 209.20 126 4.29 10 100 2 0.15 59 34 4 52 S4 53 - s * 's3 d4 (-35.*3JL3 -14.3 -- 9-.6 2 .5 1 52 . 9 153(244 40-35.324 -114.131 -3-92- 4.89 <2 6.32 (10 654 2 0.50 90 <4 4 54 1 15345 40-35.323 -114.136 -3-92- 16.41 49 10.01 <10 97 1 0.62 12 8 4 55 2 56 2 153146 40-35.314 -1 14.157 3-92- 140.80 13 1.03 <10 115 <1 0.05 <10 53 57 3. 4 S NU1NTHWLST ANI LIJA ItIILt 4ICS PAGE4 SEC11 N2 OF 3 91 SAMPLE CII FL HF K LA LI HlG MN MU NA NPNC I I,4R ~(PP -() X) -- (M) -(X (PPM) - PM--)'> ) (PP) -- PM)-P) (PM) (PPM)(PPM)(PPM ) PPM) 153785 3 1 .27 15340 4426 5.65 <15 0.49 19 5 0.05 290 <4 0.06 <4 29 <5 1 3 50 153141 324 3.45 (15 3.51 179 7 0.14 1097 <4 0.13 8 32 244 2 35 51 39 153042 4141 5.61 <15 1.56 77 21 0.26 2713 <4 0.05 <4_ 36 36 3 10 52 3 78 ;- -I J 4 J <,: 207 / ., 6 3. /6 6 12 0.0 6 213 4 0 .12 6 2 14 53 1531144 13 1.5 <15 3.21 118 6 0.06 502 <4 1.70 7 31 59 3 38 54 . 1531345 1180 3.4o <15 1.13 20 34 2.16 645 <4 1'.39 <4 35 254 7 31 55 2 153846 103(1 37.1?T <15 0.42 <2 10 <0.05 40 "53 <0.05 54 99 91 14 56 57 58 59 5 in, 60 NUJTHWLST AR1Z(JNA ILU1LItJICS PAGE 4 SEC1ION 3I OF 3 OR SAMPLE TiI TI V ZN ZR AU-fl P8 TGAM lOT EK CPK EU CPU ETlI I CPT" 153185 149 892 15 26 57 47 7750 4.5 491 27.2 196 78. 8 157 2 2 153 8ts 12 714 9 22 116 71 11435 4.7 643 34.2 292 140. 9 274 3 3 1537t'7 136 475 7 12 62 42 10192 3.6 575 34,3 284 133. 3 260 4 4 T3717W T29 ILeb 11 36 45 its 7634 4.7 487 25.0 187 78. 7 155 s - 153/89 98 12 0 23 40 38 19 7980 5.2 487 16.1 165 91. 7 175 6 153790 112 1324 16 40 43 34 8297 5.5 554 24.7 204 95. 1 185 7 6 1531)1_ 60 1003 23 36 33 19 4093 4.4 334 7.6 08 52. 2 2 7 153,2 JO 4529 58 96 176 65 1554 5.1 507 22.4 187 87. a 19 2 153793 192 241 11 11 55 41 13521 5.4 674 27.4 289 163. 2 311 10 - 153794 10 138 2 8 19 27 1865 5.3 301 0.0 22 117. 3 203 11 9 153795 48 b99 7 15 41 <10 4186 4.0 307 15.0 83 20. 6 84 22 10 -IJ 42 W 9 <10 298 4.2 273 9.52 12 r 2-9 153/07 19 3303 42 85 12 29 3392 5.8 363 7.9 62 28. 0 55 14 153798 12 5016 51 99 12 16 3926 5.9 344 6.5 46 17. 9 35 3 12 153799 10 2237 370 2720 12 5876 3097 4.6 283 4.4 44 24. 6 47 16 13 1T30Uu F 1741 25 47 7 <10 3040 4.4-.52 l5 153(01 11 1626 26 48 7 <10 - 2147 3.2 237 10.3 62 18. 1 38 38 1531K)2 <2 267 42 37 21 <10 1295 4.4 , 224 0.0 8 7. 3 15 153803 494 2255 60 66 41 40 8959 2.9 504 28.2 254 128. 13

6 -1 J3U U J55 . U9 9 49.4 99 . 22 7J 2141 3 153809 14 391 15 20401 19 40612 52437 3.8 2504 439.5 1740 0. 0 1 0 3 72 153810 2 67 3 86165 <2 99999 2063 2.5 204 13.8 63 6. 2 1 1531111 600 6300 94 <2 607 <10 34906 0.0 1145 106.1 895 425. 7 829 24 19 153E12 6 29 2-90 44 (10 3955 6.63367 5.3 9 26 1531113 3 7523 48 177 5 54 3875 3.9 240 4.8 39 17. 9 35642 263 0 15_4,14 5 1539 56 538 8 50 2910 3.1 226 12.0 57 7. 6 19 2 21 153815 10 5345 43 119 2 126 5108 3.8 226 2.9 32 19. 0 36 2 22 153516 2 161 ----- 164 5 59 4202 6.4 332 2.6 20 0 2 29 153.117 7 101( 112 123 5 27 4223 7.0 391 8.0 43 9. 27 21240 30 23 153:118 5 211 3 301 19 19 5072 6.0 371 10.6 61 16. 9 5 3515 431 24 153319 20 394 10 382 10 77 4151 5.5 359 12.1 71 20. 1 42 32 25 1J1&38 5 4 314 1.2. 153'121 3 894 54 144 9 <10 5426 5.3 361 10.3 77 14. 9 64 26 153323 4 3696 175 2814 9 21 2325 4.2 259 8.6 43 7. 54 "l 17 3s 27 1531114 6 635 9 110 10 209 4095 5.2 327 9.3 56 17. S 35 36 28 13:32J2 10 221W28 299 4 (30 2417 4.2 253 8.6 3 . 76 57 153826 8 1214 89 2277 9 2904 5272 3.9 399 38.2 158 2. 0 21 5 15302 714 0 94626 <2 6256 1.8 5102 969.6 3769 0. 0 1035 30 153828 2 1701 34 <2 21 469 2062 3.9 246 6.5 44 16. 2 32 4 31 1 3 9 4 Jr 5 60 < s93 - 12230 0.3 50 103.0 . 0 23 4 1531130 3 1802 121 3823 6 1237 3007 2.4 221 18.7 80 3. 5 154 6 644 5 32 153831 19 512 15 229 36 12 2729 5.3 310 6.8 41 12. 9 26 43 33 15332 22 785 23 483 21 220 7054 3.9 467 46.3 299 17. 9 54 44 34 153833 ((J76 19 5 54253 -67.3 . 27851672 2011 0. Zf 57~ 5 153834 10 273 2 810 27 <10 2654 6.3 337 5.6 27 4. 0 10 a 153835 11 1624 54 23742 17 5625 10024 2.1 522 78.0 314 0. 0 27 47 6 153837 3 26 <2 32244 <2 34528 1462 3.5 206 3.1 29 15. 0 29 se 31JJJ 2 550 11 4214 26 ~183 ~944 3.1 5 I.3 J8. 4 49 153840 48 171 <2 99999 7 99999 3.2 5825 4255 0. 0 207 50 153341 46 1332 16 12634 51 1747 13452 5.5 758 87.6 370 10. 6 59 51 9 153842 20 635 20 86111 20 13903 9386 2.5 574 82.3 341 3. 6 44 s2 0 15343 J 171 22 66 3620 4.8 33 14.1 80-20. S 44 5 153644 15 749 3 182 35 14 4454 6.0 387 10.3 70 26. 1 52 54 1 15345 24 400 23 1966 24 1980 5377 2.5 235 12.6 82 27. T 56 s 2 1531146 4 149 117 543 <2 681 14603 2.5 699 106.8 434 0. 0 44 5

5 NIN. U. L. SAFI4.L NtUMisLR2 U -NT AG A 1 1 NU iStT LA LUNG L T Y REP (PPM ) PPM) (1PM ) X II M) (PPM) (PPM) (X (PPM) (PPM PPM) 153047 40-35.304 -114.136 -3-92- 141.00 12 1.111 <10 45 1 0.06 23 13 10 2 2 15148 40-35.504 -114.135 -3-92- 70.53 236 1.57 <10 <2 <1 0.10 <10 187 19 3 3 153849 40-35.305 -114. 136 -3-92- 20.05 110 4.35 <10 124 1 0.23 24 2L 72 4 98 5 4 154350 40-3.312 -1 14.128 -3-92- 29.04 <2 7.97 <10 268 <1 5.88 <10 48 1531151 40-35.312 -114. 129 -3-92- 33.b0 <2 7.03 10 419 1 0.25 27 <4 4a6 1531152 40-35.314 -114.132 -3-92- 40.63 170 4.76 20 86 1 0.08 40 5 27 7 6 153'13 40-35.314 -l4.1 -,1-97- 53 .90 228 2.12 <10 78 1 0.17 3645 5 ?- 153 354 40-35.310 -114.117 -3-92- 108.30 14 4.66 15 50 2 1.39 32 4 5 9 153855 40-35.305 -114.125 -3-92- 1.12 34 1.92 <10 46 1 0.38 53 5 15 10 <2 5.76 <10 1371 2 1.11 91 <4 12 11 - 153b4 40-35.307 -114.092 -3-92-- 1.85 612 9 15J3057 40-35.307 -114.09~43 -- *e3 503 <0 161 <.5 774 11 13 10 1,110 -1.5 -3.U3-92- (0.25 <2 7.61 (10 1472 2 1.85 66 5 153059 40-J5.306 -114.107 -3-92- 66.51 1 352 0.78 <10 131 2 (0.05 27 9 15 14 2 15 153100 -114.108 -3-92- 2.27 <2 6.75 <10 132 1 0.10 156 <4 40-35.JO6 4 16 2 153m,11 40-35.307 -114. 107 -3-92- 7.24 <2 6.12 <10 110 1 0.11 163 .415 -114.224 0.84 7.25 Jo - 153'77 40-35.417 -114.2 5 -3-9:- 2.41 4 1.51 (10 189 1 1.50 17 <4 9 153370 40-35.417 -1 14.227 -3-92- 0.95 13 3.54 31 110 1 1.09 25 <4 19 3' 24 1531379 40-35.418 -114.29 -3--92- 2.41 <2 7.67 <1U0 90 2 1.91 b8 61 32 lSJ 1 40-35.423 -114.J10 -j--9 1.5 < W.79 <1 843 <1 2.20 11 4 4 33 34 26 153001 40-35.429 -114.218 -3-92- 1.81 <2 7.85 <10 618 3 1.54 47 <4 13 153082 40-35.417 -114.193 -3-92- 2.37 <2 6.95 <10 413 2 0.64 47 <4 9 35 7_ .~ 36 27 153883 40-35.424 -114.194 -3-92- 2.12 (2 6.82 <10 376 2 0.90 54 4 5 37 28 0-35 . 418 -114 . 19 6 -3 -92- 1. 15 <2 1. 30 <10O 399 2 0. 79 35 <4 1530k 4 16 3 29 153105 40-35.376 -1 13.738 -3-92- 2.09 <2 7.41 <10 734 2 1.54 39 5 1531 06 40-35.352 -113.10 -3-92- 1.12 <2 7.92 12 733 2 1.07 38 4 15 39 30 15.3137 40-35.350 -1J.7o6 -3--92- 32.01 <2 8.14 52 1579 2 1.34 49 5 3 40 (0.05 24 4 4 41 31 15Ja.> 40-35.350 -1 13. b -3-92- 108.30 357 4.26 50 92 2 15313139 40-35.351 -113.7060 -3-92- 1.84 <2 8.05 13 903 1 0.64 32 <4 13 42 1531390 40-35.329 -113.1b4 -3-92- 2.40 <2 8.29 <10 1061 2 1.22 31 <4 I 43 33 15J091 40-35.300 -113.755 -3-92- 1.28 <2 7.85 <10 893 1 1.31 27 <4 7 44 18 4 34 1532 94 46-3 .21 -1 1J. 2 -3 -92- 1.59 <2 7.57 <10 81 1 1 1.75 45 5 153093 -114.031 -3-92- 1.56 <2 6.09 <10 754 3 0.73 97 <4 7 46 40-35.002 47 - 1531594 40-34.758 -1 13.'t 7 -3-92- 4.59 <2 6.75 (10 434 3 0.65 151 <4 4 6 1531,)5 40-34.741 -1 13.93 -3-92- 2.28 <2 6.56 <10 975 3 0.83 154 (4 4 48 235 <4 4 49 7 153 byo 40-34.747 -13.948 -3-92- 2 .70 <2 6.32 <10 426 5 0.95 5 50 - 153897 40-34.665 -113.087 -3-92- 15.32 <2 6.46 (10 617 5 1.07 305 <4 1538913 40-34.616 -113.22 -3-92- 6.65 <2 6.49 <10 477 3 0.76 110 <4 4 51 <2 6.64 <10 1456 4 1.85 254 7 5 52 f9-M 153099 40-34.593 -13.7911 -3-92- 4.2 53 7 - 4. -3-99--b. ow ... '3" 40-3.4s 3f 54 153902 40-35.120 -114.141 -3-99- 36.63 <2 107.00 97 14 <1 330.50 <30 55 (4 40-35.347 -114.135 -3-99- 27.83 <2 257.00 111 21 <1 463.10 <30 383 <4 55 1i 153903 856 2 153904 40-35.32) -114.1,33 -3-99- 17.60 <2 10548.00 136 4 <1 400.00 <30 29 57

45 NLJ4TIHWLST AL ZLN A uiU1NCS PAGE 5 SECTL t4 2 OF 3 UR SAMPLE CU FL. HF K LA LI MG MN MO NA NO N P Sc SR I R ( P14 1J 1PM)1NU7 (X (PPM) (PPMJ ~ %J (PPM) (PPM) J 141) (PPM) (PPMTTTM 1T(PPK) I 15347 394 3.65 (lb 0.72 42 17 0.14 13b5 <4 <0.05 <4 34 153 2 6 2 2 153848 11432 11.05 <15 0.5(3 2 17 0.16 665 <4 <0.05 <4 29 <5 4 6 3 3 153049 1737 14.60 <15 1.49 33 11 0.24 335 <4 0.06 <4 5 114__ 10 2A_ 4 4 15J 50t9.1s 1 9 15J857 2/ 2.04 <15 2.21 108 17 0.07 868 <4 0.06 <4 42 128 5 59 12 1 J.,1. / (15 2.06 96 19 0.58 23 <4 2.33 <4 30 591 2 70 13 153859 176 11.20 <15 0.43 42 18 <0.05 19610 13 <0.05 <4 28 8 8 149 14 . 15341160 1.07 <15 0.59 98 36 <0.05 210 <4 <0.05 9 26 304 1 9 i 12 15301o 5 0.40 <15 0.24 310 25 <0.05 261 <4 <0.05 15 24 216 1 1 11 16 1 t5>312 -o~15 ~6-180~-~50T1 1531604 119 2.96 <15 3.03 43 10 0.19 137 - <4 0.07 <4 25 468 7 25 1s 1531365 5137 4.913 <15 0.09 6 13 <0.05 315 <4 <0.05 <4 28 61 < S3 19 15 2068 <15 2.51 153866 3.29 60 10 0.47 609 <4 0.10 4 26 315 5 1o- 20 6 31, 194u J.o4 (15 1.25 21 19 0.11 506 23 0.07 <4 24 221 3 30 21 1iSizbO 95 2.62 <15 2.06 69 12 0.36 327 9 1.67 <4 42 279 5 107 22 17 15311169 362 5.75 (15 1.13 24 19 0.26 1837 5 <0.05 <4 26 292 3 8 23 153670 243 3.4 <15 1.66 53 28 0.31 254 20 0.07 <4 30 242 T 16 24 19 15331 26192 20.2 15 1. -5 0 102 25 153()72 (< 2.27 <15 1.30 62 11 0.23 448 <4 2.67 7 26 145 3 91 26 0 1.13/13 39 1.10 <15 1.45 21 35 <0.05 297 <4 0.05 <4 21 336 2 206 27 21 ? 1.51374 8 0.92 <15 2.66 99 15 0.19 213 <4 2.15 5 22 177 1 182 28 22 18(18 (,: 2.53 Cl5 2'. 421 25 0.41 450 (4 2.00 12 24 706 6 154 29 153377 43 1.05 <15 0.74 13 48 0.30 52259 <4 <0.05 <4 22 28 1 32 30 1531371 25 1. 13 <15 1.52 27 57 0.36 8222 <4 <0.05 <4 29 285 4 36 3' 24 153079 14 2.77 <15 2.18 94 24 0.62 630 <4 2.44 7 32 569 7 293 32 1J1&u130.130.40(0.052367C (424 3 4 5 33 1541381 14 1.97 <15 2.35 49 26 0.41 457 <4 2.59 5 27 441 6 229 34 1530(12 5 1.11 <15 2.79 56 11 0.11 234 <4 2.30 8 22 279 2 89 3s 27 15334 10 1.24 <15 2.50 63 25 0.14 282 <4 2.31 10 23 374 3 91 3 28 T3;J84 5

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59O N13R[1lL.ST AN1ZINAIA t.UTUNICS PAGE 6 SECTION 1 OF 3 OR SAMPLE 1). U. L. SAMItL NUM'JER U U-NJ AG AL I IA BE CA CE CO CR UIJILN 51 LA' LU142 L T REP (PPM) (PPMR PPMJ (XI (PPM) (PPM) (PPM) (XI (PMVT P -^1(r153905 40-35.324 -114.130 -3-99- 11.85 <2 186.00 1bEa 2. <1 422.70 <30 4 <4 2 2 ' 153$90b 40-31.323 -I 14.135 -3--99- 27.43 <2 36.00 224 9 <1 3$8.90 <30 4 <4 3 3 153908 40-35.308 -114.093 -- 99- 10.08 (2 <10.00 70 14 <1 116.40 <30 <2 <;4 4- <4 5 4 T13F 40-5.T2 -14.~19-- - 2T12 <2 23.00 33 13 <1 466.90 <30 5 153912 40-35.350 -113.706 -3-99- 45.47 (2 <10.00 8 1352 <1 99.20 <30 3 <4 6 . 1 b443-44-4.294 -107. J1J -3-99- 54.44 (3 16b7.00 6 8 9 7 10 I1 9 12 13 10 14 11 15 16 12 17 13 18 14 19 20 Is 21 16 22 17 23 18 24 25 19 26 0 27 21 29 22 30 3 31 32 24 33 25 34 26 35 36 27 37 2 38428 29 39 40 30 31 44 32 33 45 34 46 5 47 48 6 49 51) 37 s 51 52 9 53

0 54 55 56 2 57

43 4 59 S NUt)TI1WL ST AltlZIt4A I-UTINICS PAGE 6 SECTION 2 OF 3 Ud SAMIPLi CU FL- ) HF K LA L MN Ml NA N P S ). i t FMV (') (1MJ (x) (-MM) (PPM (-PM)(P)'M) (X PPM) PPM) I) % (PPM) ( (PPM ) (PPM) 1 153905 to <10.00 9.30 1lT 550.90 840H5 <4 57.60 7 387 <40 1 1802 2 2 1,.190b 101 <10.00 2.90 31 295.10 3666 <4 155.30 <4 9 56 1 1779 3 3 1,398 2 <10.00 4.30 14 34.90 341 <4 36.40 <4 <4

38 50 51 9 52 53 54 55 2 56 3 57 4 58 5 1411(kTriWEST A2IUiIA I.UTUNICS PAGE 6 SECTION 3 OF 3

OR SAMf'LL Tit T I V ZN ZR P AU-N TGAM 101 EK CPK EU CPU ETII CPT" NUf.N I'PMJ (P'PMJ 11PM) (M'M) JR) (PPMp (PM) 153905 192 10 5 13352 <2 2 2 X4,,- 15390b <5 8 <4 1335 <2 3 153908 :s <2 <4 29 <2 i4 -'7./o7 g3J17 (5 9 4.4 291/3 <2 5 ,.-/ 153912 <5 <2 <4 83 5 6 6 7 10 11 -9 127 10 13 11 14 15 12 16 13 17 14 is 19 15 20 16 21 17 22 1e 23 24 19 25 20 27 21 28 22 29 23 30 3132 24 32 25 26 34 35 27 36 28 37 29 38 39 30 40 31 41 32 43 33 44 34 45 S 46 47 6 46 37 49 a 50 51 39- 52 ..0 , 53 54 55 42 56 3 57 4 ~- 58 59 5 60 %,. 0 -.

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19 55 0 o 58 18 NORTHWEST ARIZONA PLUTONS

First Interim Report

Subcontract No. 79-348-S

Project No. 30-79-3307

Geologic Study

Uranium in Precambrian Plutonic Rocks

Northwestern Arizona

Submitted to

Bendix Field Engineering Corporation

P.O. Box 1569

Grand Junction, Colorado 81501

James D. Loghry

Loghry-Hei nri chs Joint-Venture

P.O. Box 5964

Tucson, Arizona 85703

Telephone: (602) 623-0578

August 4, 1979 CONTENTS

Page

Introduction------1

Index Maps - Arizona and Mohave County-- 2

Location Map ------3

Planning - Research------4, 5

Work Plan------6

Figure 3 - Milestones------7 Field Work------8, 9

Industry Activity------10

Conclusions and Recommendations------11

References------12 Subcontract No. 79-348-S Project No. 30-79-3307

Introduction

Bendix Field Engineering Corporation, Grand Junction,

Colorado, (BFEC) awarded subcontract No.79-348-S, Project

No. 30-79-3307 to James D. Loghry and Walter E. Heinrichs on July 5, 1979. As part of the World-Class Deposit Studies of the National Uranium Resource Evaluation Program, the investigators are directed by BFEC to evaluate the uranium potential of certain Precambrian and Laramide plutons (see

Figure 1 and Figure 2) as host rocks and source rocks for uranium deposits in three study areas in the Hualapai and

Peacock Mountains, rohave County, Arizona. Certain Laramide intrusions and the Precambrian Diana Granite in the Cerbat

Mountains will be examined for their uranium potential.

Other Laramide rocks and Precambrian granites in the Hualapai and Aquarius Mountains will be studied as time permits.

The plutons will be evaluated by reconnaissance geologic mapping, rock chip geochemical sampling, spectrometer potassium-uranium-thorium determinations at sample sites, petrologic evaluation of selected samples and Rb/Sr age dating of a few critical plutons.

- 1 - Subc. tract No._79-34..$... Project No. 30-79-3307

Fredonia

US 93 Flagstaff I. US SS Kingmnan IL US 66 1) o Phoenix AC

o Tuscon

INDEX MAP OF ARIZONA

US 93 N E V A D A ~466 CO C ON I N 0 C 0 U N T Y 466 US 66

o Chlori'' Hoc b~rr' I_ STUDY AREAS o rno

C A L I FO R N I A - Yuc YA V A P A I C 0 U N T Y US 66 Topock

Figure I INDEX MAP OF MOHAVE COUNTY, ARiZ ONA 'f Showing Iocorion o f

Study Areas - Uranium in Plutonic Rocks, N.W. Arizona . ------/-.-...-...-.--I

) - - \ -Q -- - *-- * -... ------

-"-C.- -l( :- &

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LOCATION ' r--c ------'C---.n-P- - - C - Q- b > - -- I- - - - t - A -- - '~ ---- -s.- - \o . ------A - - -

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LOGAION BOIESTO H PUTONCB - (NLDDINTENWARZNASUDb

Figure 2 r -

" t \ \' ,r *- --- >v\Vi/"*, '1\. -1 * .- ~ Crti p

-PT~~"r~' -- e /ThI ------I -- . Subcontract No. 79-348-S Project No. 30-79-3307

Planning - Research

The Planning phase commenced on contract date July 5,

1979. A work plan for the entire project was developed as described in Table 1 with Milestones in Figure 3. We think it will be essential to conduct field work through December,

1979 to accomplish project objectives. Thus it is possible that we will not receive geochemical analyses' reports statistical analyses of geochemical data and age dates until

January, even February, 1980, thus delaying data analysis and the Final Report. Figure 3 Milestones reflects this possibility.

Research also commenced on July 5th and will continue throughout the project. When we learned that Phillip Ander- son, doctoral candidate at the University of Arizona, had done reconnaissance mapping of Precambrian rocks in the

Hualapai Mountains for his dissertation, we invited him to assist us as a consultant geologist to assist us in mapping and correlating the plutons and metamorphic rocks in the project area.

Assisted by Phillip Anderson and Deborah Walsh, we have collected a large body of geological, geochemical and geophysical literature pertinent to the work and are evalu-

- 4 - Subcontract No. 79-348-S Project No. 30-79-3307

ating these data. We find that, except for the work of

Kessler (1976) and Vuich (1974), published geology is pre-

liminary and not useful for the project.

We estimate we will spend 100 man days in the field work, collect 300 rock chip samples and 50 petrologic-min- eralogic samples. If we use a commercial lab (Teledyne

Isotopes), our budget allows the collection and Rb/Sr age determination of ten samples from three Precambrian plutons, assuming three points from each. It's possible we can interest a university laboratory in the project, which will permit us to date more samples at lower cost.

We will use a four-wheel drive pickup on roads and trails, supplemented by foot traverses to cover the Hualapai and Peacock ranges, with relatively limited time in the

Cerbat and Aquarius Mountains. We will operate out of

Kingman, Hualapai Mountain Park, Yuma and Wikiup where there are restaurants and motels and otherwise camp out when it seems advisable.

- 5 - Subcontract No. 79-348-S Project No. 30-79-3307

Table 1.

Work Plan

Start 1 2 3 4 5 6 7 8 7/5/79 July Aug Sept. Oct Nov. Dec. Jan. Feb.

1) Planning- Research

Loghry 65 30 30 30 0 155 Hei nri chs 40 10 10 10 10 80

2) Field Studies

Loghry 60 70 100 100 150 150 630 Hei nrichs 60 0 30 50 150 0 290

3) Laboratory Analyses

Loghry 10 10 25 45 Hei nri chs 5 0 10 15

3) Data Analysis, Final Report

Loghry 200 20 220 Heinrichs 60 5 65

225 110 170 205 320 185 260 25 1500 Hours

- 6 - PC Plutonic Rocks, v.W. Arizona Lognry-heinricns Joint Venture Subcontract No. 79-348-S Project No. 30-79-3307

FIGURE 3

MILESTONES

1979 - 1980 July Aug. Sept. Oct. Nov. Dec. Jan. Feb. ITEM (Month) 1 2 3 4 4 6 7 8 9 10 11 12

Subcontract Award X 7/5/79

Project Planning X x Scheduling (Task 1)

Compilation of Pub- X x-----x lished Information

Field Work (Task 2) x x

Geochemi cal Analyses X (BFEC Lab

Laboratory Work X X (Investigators) (Task 3)

Data Analysis and x X------Final Report (Task 4)

Reporting

First Interim Report x

Second Interim Report X----x

Final Report X------X

Monthly Oral Reports X x x X x x Subcontract Termination X------x

-7- Subcontract No. 79-38-S Project No. 30-79-3307

Field Work

Field work commenced July 20, 1979 with a 6 day

reconnaissance trip in the Hualapai Mountains and a brief

visit to the Aquarius Mountains in the company of Phillip

Anderson. We examined many varieties of Precambrian gran-

itic and metamorphic rocks, as well as Laramide intrusions,

a few pegmatite prospects and the Democrat, Gold King and

American Flag mines, taking over 20 rock chip samples for

geochemical analyses, some slated for petrologic work. We

find the. geology to be markedly different from that shown

on the Geologic Map of Arizona, (Wilson, et al 1969) or the

Mohave County Geologic Map, (Wilson and Moore 1959) and

feel that a large part of our contribution will be the recon-

naissance mapping of the Precambrian and Laramide plutons as well as evaluating their uranium potential. Field work and

research finds uranium associated .with a wide variety of

Precambrian granitic rocks including fine-grained pre 1700

m.y. granites, a 1740 m.y. medium to coarse-grained porphy-

ritic quartz monzonite and coarse-grained quartz monzonite

porphyries about 1400 m.y. old and 1200 m.y. pegmatites,

also certain quartz-sulfide veins in Precambrian granites

and metamorphics presumed to be Laramide (+ 72 m.y.). The Subcontract No. 79-38-S Project No. 30-79-3307

region has a wide variety of Precambrian granitic rocks that are likely source rocks for uranium deposits in the

Shinarump Member of the Triassic Chinle Formation, some

Laramide sulfide veins like the Jim Kane, Detroit, Demo- crat and Hillside mines and Tertiary sedimentary deposits in the Artillery Peak, Chapin Wash, Muddy Creek, Big Sandy and other unnamed formations. Orthomagmati c uranium deposits which may occur in fluorine-bearing Precambrian

granites and pegmatites known for their small', poddy

samarskite and euxinite occurrences are unlikely tc be

economic. Economic deposits of the magmatic-hydrothermal,

contact metasomatic, autometasomatic, authigenic and allo-

genic classes (defined by Matthews, 1978) may occur in the

region. If present, they are masked by deep oxidation and

leaching or post mineral cover.

-9- Subcontract No. 79-38-S Project No. 30-79-3307

Industry Activity

A number of companies continue to explore Date Creek

Basin. Much of the eastern flank of the Hualapai Mountains is staked or leased by Phillips Uranium (+2,000 claims).

They have drilled numerous holes through Quaternary-Tertiary gravels possibly to probe Miocene lake beds. Kerr McGee has leased their 343 King claims in the Wheeler Wash area,

T.20 N., R. 14,15W, covering Precambrian granites and a

Laramide pluton to Minerals Exploration Company. Rocky

Mountain Energy staked their Scott claims near T.16N.,

R.15W. and another group near Cottonwood Canyon in T.20N.,

R.17W. in 1976. They did some drilling in radioactive

1400 m.y. quartz monzonite prophyries, but there has been no recent activity. In Yavapai County, near Bagdad, Cyprus and Kerr McGee are looking for a partner to join them in exploring the uraniferous Hillside vein system.

- 10 - Subcontract No. 79-38-S Project No. 30-79-3307

Conclusions and Recommendations

Since large scale geologic mapping is absent in most of the project area, the investigators will map the Pre- cambrian or Laramide plutons in reconnaissance fashion as they are sampling them. Any recommendations for drilling would be premature. In addition to the geochemical analyses outlined in Table 1 of the BFEC Work Statement of March 29,

1979, we recommend additional analyses for fluorine (specific ion electrode method), molybdenum and tungsten (colon- metric) and lead and tin (atomic absorption).

- 11 - Subcontract No. 79-38-S Project No. 30-79-3307

References

Kessler, E. J., 1976, Rubidium-strontium geochronology and trace element geochemistry of Precambrian rocks in the northern Hualapai Mountains, Mohave County, Arizona: unpub. M.S. thesis, Univ. Ariz., 73p.

Mathews, G. W., 1978, Uranium Occurrences in and related to plutonic igneous rocks, in Mickle, D. G. and Mathews, G. W. eds., 1978, Geologic characteristics of environments favorable for uranium deposits: U.S. Department of Energy, Open-File Rept. GJBX-67 (78) p.121-180.

Vuich, John S. 1974, A geologic reconnaissance and mineral evaluation, Wheeler Wash area, Hualapai Mountains, Mohave County, Arizona 77p. 6 maps.

Wilson, E. D., Moore, R. T., and Cooper, J. R., 1959, Geologic Map of Arizona, scale 1:500,000: Arizona Bureau of Mines and U.S. Geological Survey.

Wilson, E. D., Moore, R. T., 1959, Geologic map of Mohave County, Arizona, scale 1:375,000: Arizona Bureau of Mines, University of Arizona, Tucson, Arizona.

ames D. Loghr Walter E. Heinrichs Jr.

- 12 -

Second Interim Report

Subcontract No. 79-348-S

Project No. 30-79-3307

Geologic Study

Uranium in Precambrian Plutonic Rocks

Northwestern Arizona

Submitted to

Bendix Field Engineering Corporation

P.O. Box 1569

Grand Junction, Colorado 81501

James D. Loghry & W. E. Heinrichs, Jr.

Loghry-Heinrichs Joint Venture

P.O. Box 5964 Tucson, Arizona 85703

Telephone: (602) 623-0578

January 25, 1980 Loghry-Heinrichs Joint Venture P.O. Box 5964 Tucson, AZ 85703 Phone (602) 623-0578

CERTIFIED MAIL, R.R.R.

January 25, 1980

Bendix Field Engineering Corporation Grand Junction Office P.O. Box 1569 Grand Junction, CO 81501 Re: NW Arizona Plutonics Subcontract No.79-348-S BFEC Proj.No.30-79-3307 Attention: Mr. Hal Gardner Project Monitor

Dear Hal:

Transmitted herewith is one copy of our second interim report, together with an extra copy of this letter and a preliminary sample location map print at 1:125000 scale of the project area.

Identical information is also being transmitted to Attention : World Class Division, Dr. Robert G. Young and to Attention: Subcontracts Depart- ment except that Subcontracts won't receive a copy of the map print (mainly because of its size).

Looking forward to your comments and the visit by Fritz Loomis and John Berger. Regret you won't be along.

Regards,

WEH:mt cc: enclosed Two cc: Dr. Young One cc: BFEC Subcontracts Department Arizona Plutonics Second Interim Report Subcontract No. 79-348-S Project No. 30-79-3307

Introduction

Subcontract No. 79-348-S, Project No. 30-79-3307 was awarded by

Bendix Field Engineering Corporation on July 5, 1979. Research commenced immediately and field work commenced with a geologic mapping and sampling reconnaissance of the Hualapai and Aquarius Mountains on July 20. To date we have devoted 1200 hours to the project, 760 of them in the field.

The purpose of the project is to determine the uranium potential of

Precambrian and younger plutons in the Hualapai, Peacock, Aquarius and

Cerbat Mountains of Mohave tounty, Arizona. The plutons and the region are being evaluated by geologic mapping, rock chip geochemical sampling, portable spectrometer potassium-uranium-thorium determinations and spectral scintillometer readings at sample sites, and petrologic evaluation of selected samples. The investigators contracted to investigate 25 designated plutons or granitic outcrops. As it turns out, these are crudely located and/or erroneously outlined on the U.S.G.S. Arizona Geologic Maps

(see Figure 1). In addition, we were instructed to sample all major plutonic lithofacies in the project area. We have visited and sampled 16 of these occurrences. So far, 8 of these show radiometric or uranium anomalies, partly confirmed by limited U/FL analyses received from ORGDP to date. At this stage, an anomaly is regarded as +400 cps total count (Mt. Sopris SC-132),

+14 ppm U (GR-310 spectrometer), or +10 ppm U-FL. Mapping and sampling of the Precambrian Valley pluton (No.20, Figure 2) are complete. Mapping and s%

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25 28c 420 22 4 7 23 54 48 46 .4 4 5 6

18 NORTHWEST ARIZONA PLUTONS

Figure 2 sampling of the Precambrian Holy Moses (No.4) and Blazing Star (No.23)

plutons are almost finished. Preliminary examination of the Aquarius

Range and batholith (No.i7), an additional task requested by BFEC, is complete. We have identified, and partly mapped and sampled 20 non-

designated plutons, five of which show anomalous radioactivity, and we

know from the work of Hal Gardner, Al O'Neill and others that at least 7 others are anomalous in uranium or radioactivity. We have identified 54 plutonic occurrences in the region (Figure 2) and find that at least 20 of them are anomalous. Some of the numbered occurrences have proved or will prove to be parts of the same pluton, but others contain several plutons, so that 54 is a minimum and we expect to identify an estimated 70 plutons during the project. This figure does not include numerous Precambrian diabase, aplite and pegmatite dikes and sills or the numerous Laramide porphyry dikes and sills seen so far.

Of 15 known and more significant hardrock radioactive mines and occurrences in and near the project area, we have examined the Democrat Mine,

Uranium Basin, Big Ledge, Mineral X or Hazen-Boulder and Blazing Star prospects. We do not intend to examine any radioactive pegmatite (Rare Metals,

Madril and Leivas, Kingman pegmatite) occurrences unless they happen to be en route. We have found that the large muscovite-rich pegmatites (Merlo,

Mica Giant, etc.) are not anomalous. The only strongly anomalous pegmatites noted are a small pod a short distance up canyon from the Gold King

Mine which was not sampled and the granite pegmatite at Uranium Basin. NW Arizona Plutonics BX-3307 Jan. 25, 1980

Summary of Pluton Examinations

Pluton Samples No. Classification Taken/ A*. Map Symbol Age Proposed Comments 1 ~ .. / 1

1) Ithaca Peak 72 m.y. 0/10 Spectrometer truck survey by Jerry Qmp (Qd,Qp) Larami de Davis, U of A Msc thesis (19 ), no U, Th anomalies LIP qmp No air rad anomalies, no H'SSR

2) Rhyolite dike Larami de 0/10 Air rad; HSSR sed, water anomalies System of TKi Cerbat Mts., Dikes could be associated with U A incl.Bronco' occurrences at De La Fontaine, Jim dike; post Kane, other veins. Ithaca Peak Qmp Li

3) Laramide 0/5 Rhyolite plug or dike (s). NW 1/4 TKi Stockton Hill 7 1/2' Quad. No air rad. Possibly related to HSSR water sample

4) Holy Moses PC 38/6 E and SE flanks are anomalous. W pbQm 1337 outcrop along ATSFRY not anomalous. + 37 m.y. Mineral X (Hazen) claim near Boulder A Spring. RMEC location drill holes. PCHM qm Debbie claims, 10/76. Air rad. anomalies. Ground rad anomalies.

*A - anomalous, +400 cps scintillometer, +14 ppm U spectrometer, or +10 ppm U-FL. Summary of Pluton Examinations NW Arizona Plutonics, BX-3307 January 25, 1980 Page Two

Pluton Samples No. Classification Taken/ A* Map Symbol Age Proposed Comments

5) Hualapai Peak PC 2/6 Anomalies on SE flank probably pbQm; Kessler's 1397 belong to Democrat granite or Hualapai +69m.y. med-grained red granite. "granite" No air rad anomaly; 1 HSSR sed PCHP qm anomaly on W contact. HSSR well water anomalies NE, E of pluton may be assoc. with other rocks.

6) Medium-grained PC 1/6 Air rad anomalies. HSSR water (red) granite 1337 anomaly. Sample 153606: 8.4 ppm (Kes sl er, 1976) +38m.y. U-FL. A Scint 475 cps. PC mgr

7) Rock Creek- PC 0/5 Minor air rad anomalies HSSR Whiskey Basin water anomalies (2). Several PC A? Pluton plutons intrude PC meta-seds. QM or Gd PCRC qm

8) Rock Creek- PC 0/8 Nos. 7, 8 believed to be in part, Whiskey Basin the same pluton. Weak, small air A? Pluton, Qm or rad anomalies. 3 HSSR water Gd anomalies. PCRC qm

9) "Larami de Mostly 7/15 Largely PC Blue Tank biotite- Granite" PC muscovite granite (No.37), also PC A (TKgr) some pegmatites, metaseds, other granitic rocks. Laramide porphyry dikes, sheets on east and north. HSSR water anomaly near Gold King mine. Air rad anomalies strongest on south half.

*A - anomalous, +400 cps scintillometer, +14 ppm U spectrometer, or +loppm U-FL. Summary of Pluton Examinations NW Arizona Plutonics, BX-3307 January 25, 1980 Page Three

Pluton Samples No. Classification Taken/ A* Map Symbol Age Proposed Comments 1 / ~ 1

10) Willow Creek PC 0/10 Yucca NE 7 1/2' Quad pluton Air rad anomaly PCWC

11) Cavalliere PC 1/10 May be 2 plutons. No air rad. pluton- Wabayuma Peak pluton

12) Hualapai PC 3/30 Many plutons, incl. Blue Tank Mountains muscovite-biotite granite, Bar West, large IL ranch - Bee Springs and Dutch A "pluton" Flat porphyritic biotite quartz monzonites. Cottonwood Canyon sample, Hal Gardner 2/24/79, 11.6 ppm cU, 75 ppm Th, 6.47 Th/U. Cow Creek sample, Hal Gardner, 4.1 ppm cU, 45ppm Th, 9.18 Th/U. 3 HSSR water anomalies.

13) Bar IL-Bee 0/3 Air rad anomalies. Part of a Springs larger pluton.

A? pbQm (?) PCB qm

14) Granite gneiss PC 1/2 Air rad anomaly may not be porphyritic, of attributable to this outcrop. Neal Hill 425 cps; 5.6 ppm U-F vs A? 14 ppm spectrometer. Weak anomaly. PC N gr gn

15) Dutch Flat PC 4/10 Scint 450-550 cps. 6.9, 6.5, 19.0 ppm U-FL (19 ppm in drill A pluton,pbQm cuttings). Mud Spring water anomaly 78 ppb. U. RMEC loc- PCDF qm ation drill holes - Scott Claims. (9/76). Contains a sizeable area Summary of Pluton Examinations NW Arizona Plutonics, BX-3307 January 25, 1980 Page Four

Pluton Samples No. Classification Taken/ A* Map Symbol Age Proposed Comments

15) Dutch Flat of chlorite-muscovite (quartz, Cont. pluton hematite) alteration. Scint. 450 cps. No ORGDP report. Spec. A pbqm 9.7 ppm U. Dissem. fluorite PCDFqm common at site 153619.

16) Part of Groom PC 2/3 Air rad anomaly. No HSSR Springs pluton(?) 1W anomaly. pbQm

17) Groom Springs PC 3/10 Weak air rad anomalies, one HSSR pluton, pbQm 1W water anomaly might be attributable to this pluton. PCGS qm

18) Artillery PC 4/10 Weak scattered air rad anomalies, pluton pbQm 1 HSSR water anomaly might be attributable to this pluton or a PCA qm Tertiary sedimentary U occurrence. Fracturing and K-feldspar-chlor alteration due to regional cataclastic deformation is common,

19) Greenwood PC 8/15 Air and ground radiometric anoma- Peak pluton 1W lies, 1 HSSR water anomaly. 1 A pbQm sed anomaly, H.Gardner Sec 1,13N, 12W sample: 9.2 cU, 112Th, 12.2 PCGPqm Th/U. Pluton is host to State Min Au Ag (U) possible Tertiary (?) vein cut by U bearing faults.

20) Valley pluton PC 13/0 Air and ground rad anomalies pbQm 1W Hal Gardner 2/23/79 sample: A PCV qm 5.2CU, 39Th, 7.5 Th/U.

*A - anomalous, +400 cps scintillometer, +14 ppm U spectrometer, or +10ppm U-FL. Summary of Pluton Examinations NW Arizona Plutonics, BX-3307 January 25, 1980 Page 5

Pluton Samples No. Classification Taken/ A* Map Symbol Age Proposed Comments 1 ~ .. I

21) Antares PC 5/10 Coarsely porphyritic biotite quar pluton monzonite, 2 phases, north one weakly porphyritic, south one cro pbQm with abundant coarse K-spar phxst No air rad. Weak ground rad.

22) South Peacock PC 0/10 Air rad anomalies, some sharp, 2-3X SD. A? pluton

23) Blazing Star PC 3/8 Red 'porphyritic granite, dissem. 1W fluorite seen at most sample site pluton, pGr A RMEC location drill holes, Hermus PCBS Gr claims (10/76). Local sharp air rad anomalies. PRR - Blazing Sta claims, p.49, Sec 26, 21N, 13W. H. Gardner sample: 3 cU, 95 Th, 31.67 Th/U.

24) Wheeler Wash Lar 1/10 Lt. gy med-gr equigranular qtz mc part of it cut by sulfide veins a Qm +65m.y. fractures, well altered, a Cu-Mo 0/5 W porphyry copper prospect; part he LWQm by Kerr-McGee as a uranium prosper Pluton is radiometrically dead (aerial and ground); 0.9 ppm U-FL 100 cps scint. Target may be py tized E and W fault contacts of pluton w/ PC granites or carbonat K-spar "greisens" in pluton. No air rad anomalies over pluton, bi. they do occur NW and E of it. Or HSSR water anomaly NW of pluton. Springs and pyritic drill hole ci tings are reported to be anomalot in uranium. Likely prospect areE is NW of pluton in radioactive P( med-gr granites, other rocks.

*A - Anomalous, +400 cps scintillometer, +14 ppm U spectrometer, or +10 ppm U-f Summary of Pluton Examinations NW Arizona Plutonics, BX-3307 January 25, 1980 Page Six

Pluton Samples No. Classification Taken/ A* Map Symbol Age Proposed Comments v 25) Rattlesnake PC 0/10 Air rad anomalies, one possible Hill granite 1540 HSSR water anomaly. Sample A? gneiss or MGC-133 (A. O'Neill) "PC soil" (Kessler, 1976) 1620m.y. anomaly, Sec.36, T21N, R15W. or 106.8 ppm CU is adjacent to NE'ly PCRH gr 1312 fault between PC metaseds and +23m.y. gneissic granite believed to be Rattlesnake Hill.

26) Diamond Joe Lar 4/4 No air rad, no HSSR anomalies. One ground rad anomaly - 450 cps over Local stock, Qmp 72m.y. qtz-py-cpy-mo vein; small pod qtz- A K-spar-musc-py-cpu-mo: 89ppm U-FL. 6 Qmp Internally generated Laramide vein (does not extend outside LDJ Qmp stock) indicates that "dead" Lara- mide plutons can produce anomalous uranium. Three stocks samples average 1.4 ppm U-FL.Stock has 1) innermost coarse Qmp 2) outer porphyritic Qm E of NW'ly fault; 2) and 3) outermost med gr. biotite Qm W of fault assoc. with arcuate mineralized zone - Cu-Mo prospect, includes a muscovite-K-spar "greisen".

27) Aquarius PC 4/4 Pluton has at least 4 phases, none batholith are anomalously radioactive even PCA qm near 5 HSSR water anomalies. No bqmp, gray ground anomalies in extensive truck granite, traverses. Known U occurrences. pink Rare metals pegmatite, Catherine and granite Michael Tertiary lake bed, were not examined. Boner Canyon tungsten district shows no anomalies. Pluton does not extend into the area of air rad, HSSR and Al O'Neill geochem anomalies, north of Dripping Springs Canyon. Bio Qm in Deluge Wash 5 miles west is tentatively correlated with the Aquarius batholith. 4 samples avg 220 cps, 1.4 ppm U-FL.

*A - Anomalous, +400 cps scintillometer, +14 ppm U spectrometer, or +l0ppm U-FL. Summary of Pluton Examinations NW Arizona Plutonics, BX-3307 January 25, 1980 Page Seven

Pluton Samples No. Classification Taken/ A* Map Symbol Age Proposed Comments

28) Blazing Star PC 0/6 Few minor air rad anomalies. 1 HSSR granite, water anomaly. RMEC location drill A holes. NW outcrop

PCBS gr

29) Valentine PC 3/0 Foliated med. gr. porphyritic qtz monzonite. Not anomalous. One or 1740m.y. two HSSR anomalies could be associated PCV qm with pluton. Air rad anomalies, HSSR water, sed anomalies N of Crozier are believed to be unrelated to this pluton, and were not investigated because they are well out of study area. SW part of pluton is cut by 4 sets of limonitic fractures, with epidote, chlorite, but is not a Laramide granite as advertised on County geologic maps.

30) Peacock Pluton PC 0/6 Air rad anomaly, HSSR water anomaly on S end pluton. A? pQm

PCPqm

31) Shingle Canyon PC 1/2 Medium grained granite gneiss, not anomalous, much Tertiary volcanic PC gr gn cover. Minor air rad anomaly.

32) Democrat PC 1/6 Small body felsic muscovite-biotite granite granite, host to Antelope-Democrat A fault zone (Laramide?) with lenses PCD gr py-Au-Ag ore, significant U 3 08 in one stope in Democrat Mine. H. Gardner, 2/23/79, dump 1200 cps, 7.8 cU, 47Th, 6.03 Th/U. 153641: 350cps; 6.1 ppm U-FL. Three dump samples, vein zone: 650-8000 cps, avg 28 ppm U-FL. *A - Anomalous, +400 cps scintillometer, +14 ppm U spectrometer, or +10ppi U-FL. Summary of Pluton Examinations NW Arizona Plutonics, BX-3307 January 25, 1980 Page Eight

Pluton Samples No. Classification Taken/ A* Map Symbol Age Proposed Comments

33) Odle Ranch PC 1/3 Porphyritic muscovite quartz monzonite doubt it's Hualapai Peak qtz monzonite pQm (Hualapai granite). 153611: 150 cps, 1-6 ppm U-FL. Air rad anomaly, but PCO qm no ground anomaly.

34) NE Fork PC 1/3 Med gr. pink granite, 2 phases; Bar IL Canyon sharp, strong air and ground rad A anomaly. PC IL gr 153614: 600 cps; 19ppm U-FL.

35) Burch Peak PC 2/10 Coarse porphyritic biotite qtz monz batholith 1700m.y.? with coarse distinctive blue gray pQm K-spar phxsts. Large batholith appears to be the backbone of the PCBPqm PC central Hualapai range, could extend south beyond signal. 153613, 615, 235 cps, 4.9 ppm U-FL.

36) Hualapai PC 2/6 Crystalline to gneissic, dk gy bio- Granodiorite 1800 tite granodiorite, the largest, (Kessler's grano- +470m.y. oldest intrusion in the north diorite gneiss) Hualapai Range, cut by PC granites, qtz monz., pegmatites and Laramide PCH gd rocks. Air rad anomalies are attributed to younger PC rocks. 153617: 160 cps, 2.5 ppm U-FL

37) Blue Tank PC 2/10 Med-coarse-gr. muscovite-biotite grani large linear body with prongs extends A SW 1/4 from near Gold King Mine to PCBTgr Antler Mine area, a major structural break, supersedes most of mis-mapped "TKg" pluton No. 9, some of No. 12.

*A - Anomalous, +400 cps scintillometer, +14 ppm U spectrometer, or +10 ppm U-FL. Summary of Pluton Examinations NW Arizona Plutonics, BX-3307 January 25, 1980 Page Nine

Pluton Samples No. Classification Taken/ A* Map Symbol Age Proposed Comments 1 V .. / 1

38) Cottonwood 1/3 Air rad anomalies are attributed Canyon granite to other plutons. Not anomalous gneiss sample only if convenient.

PCCgrgn

39) Chloride PC 0/6 Contains Laramide base and precious Granite 1350 metal veins, mines probably examined A? 1378m.y. and found not to be anomalous by PCC gr A.E.C. Two sharp air rad anomalies. Not a designated pluton; will sample if there's time.

40) Diana Granite PC 0/4 No rad or HSSR anomalies. Will 1740m.y. sample if there's time. Not a designated pluton

41) Granite south 0/0 Identified by Hal Gardner NE 1/4 of Mt.Tipton Sec 33, 25N.18W. 3.2 cU, 10 Th, 3.3 Th/U.

42) Faculty Springs PC 0/3 Air rad, HSSR sed anomalies. Tin Mt. granite(?) 7 1/2' Quad, NE SE NW sec.16, 21N, A 12W. A. O'Neill MGC-200: 22.4 ppm cU, 700 cps. Will sample if there's time. Not a designated pluton

43) Butte Tank PC 1/0 Antares 7 1/2'Quad. Not anomalous. of Granodiorite Intrudes PC migmatites, part older terrain intruded by Valley gneiss pluton. Foliated porphyritic granodiorite gneiss. 153661: 2.3 ppm pbGdgn U-FL A. O'Neill MGC-221, 250 cps, 1.6 ppm cU. PCBT gn

*A - Anomalous, +400 cps scintillometer, +14 ppm U spectrometer, or +10 ppm U-FL. Summary of Pluton Examinations NW Arizona Plutonics, BX-3307 January 25, 1980 Page Ten Pluton Samples No. Classification Taken/ A* Map Symbol Age Proposed Comments 1 t/ .! 1

44) D & G Basin PC 0/0 Precambrian dark gray fine-grained Diori te diorite of D & G Basin, Diamond Joe 7 1/2' Quadrangle. Scint. 60 cps PCDGDi Spec: 1.5% K, 1.42 ppm U, -0.31 ppm Th, possibly lowest count we'll en- counter.

45) Copper Canyon PC 1/0 Precambrian coarsely porphyritic biotite quartz monzonite, small body on plug, pbQm contact Laramide Diamond Joe stock, altered, with qtz-py veinlets. PCqm Scint: 250 cps 153631: 3.7 ppm U-FL.

46) Sawmill Canyon PC 0/0 Hualapai Peak 7 1/2' Quad., Sawmill gabbro or Canyon gabbro or pyroxenite, PC pyroxenite meta-volcanics or intrusion? Not anomalous. MGC-124: c 0-1 ppm cU. A. O'Neill. PCgb

47) Bimetal quartz Laramide? 2/0 Pyritic quartz monzonite and breccia monzonite or Mid- pipe with Precambrian metased frag- Tertiary? ments and Cretaceous? hornblende andesite inclusions. Bimetal Mine, Lqm McConnico District, oxidized intrusion - breccia was mined for Au.

48) McConnico PC 1/0 Precambrian dark gray fine-grained diorite biotite diorite. Not anomalous. Scint. 50 cps 153712. Spec: 1.1 %K, PC Md 1.6ppm U, 7.8 ppm Th.

49) Beecher Well PC 1/0 Precambrian med-grained non-porphyrit granite gneiss. Not anomalous gr gn

PC grgn

*A - Anomalous, +400 cps scintillometer, +14 ppm U spectrometer, or +10 ppm U-FL. Summary of Pluton Examinations NW Arizona Plutonics, BX-3307 January 25, 1980 Page Eleven

Pluton Samples No. Classification Taken/ A* Map Symbol Age Proposed Comments r ~ r

50) Wikieup PC 0/4 Precambrian Wikieup Granodiorite (Putnam, 1961), coarse-grained granodiorite sub-porphyritic biotite-hornblende granodiorite to quartz diorite. bh Gd Putnam regards the Wikieup and the Boriana (our Hualapai biotite granodiorite, Kesslers (1976) granodiorite gneiss) as different plutons. Vehicle traverses to date show no rad anomalies.

51) Devil's Canyon Lar 0/4 Laramide pluton; fine-med-grained. pluton No air rad or HSSR anomalies. 65-70m.y. Cu-Mo, porphyry copper prospect.

52) Granite PC 1/1 Large, unique pegmatitic granite Pegmatite pluton south of Antares intruded by PC Antares bio qtz monz pluton and PC PC GP diabase dikes or sheets. No air or ground rad anomalies.

53) Garnet Mtn. - PC 0/0 Precambrian foliated porphyritic Music Mtns quartz monzonite; mapped in NW A batholi-th Valentine 7 1/2' Quad. A. O'Neill MGC-182, 230 cps, 10.2 pQm ppm cU.

PCGM qm

54) Cottonwood PC 0/0 Air rad and HSSR sed anomalies Cliffs pluton No. 42 Faculty Springs occurrence A? could be associated with this pluton.

*A - Anomalous, +400 cps scintillometer, +14 ppm U spectrometer, or +10 ppm U-FL. Petrographic Examination

We have collected enough rock chip samples to select a suite that is a useful cross section of project area rocks and have submitted 57 samples for petrographic examination to Dr. Sidney Williams for thin section prep- aration and petrographic analysis.

Age Dating

If possible, we are advised to try to determine absolute ages of uranium-rich plutonic bodies. We find that we have few truly fresh unoxidized and/or unaltered specimens suitable for Sr/Rb dating in this region of deep weathering, Laramide intrusion-alteration and Tertiary cataclastic deformation. A proper sampling program for age-dating samples will require dynamite, even core drilling, rather than simple hand methods alone.

Toward the close of the project with mapping and sampling largely completed, with a large number of U-FL, U-NT and Th analyses in hand we will be better able to specifically identify the best locations for obtaining specimens for age determinations. However, we estimate there will ultimately be 20 or more plutons that could logically be dated and recommend that this poten- tially large task be approached as a separate, follow-up project. Some possible candidates for age dating are the Democrat granite (32), Dutch Flat pluton (15), Groom Peak pluton (19), NW Fork Bar IL granite (34), Burch Peak batholith (35),Blazing Star granite (23, 28), Aquarius batholith (27) and

Valley pluton (20). Aerial Radiometrics

Radiometric anomalism revealed in DOE/NURE contracted aerial surveys has been ground checked by continuous carborne scintillation observation en route and spot checked further whenever anomalous response was encountered.

Geochemical Sampling

We have submitted 144 rock chip samples and 13 water samples to ORGDP, a total of 157 samples, of which 68 are in transit. On December 24, 1979 we received U-FL results for 53 rock chip samples and 34 element results for 4 water samples. These represent a sample shipment of October 11, 1979 and part of an October 23, 1979 shipment. Results for 1 rock chip and one water sample were omitted from the data. No results for lead in water were provided and we see no provision for it in the rock chip computer printout.

We understand that lead is to be included in any analyses and are concerned that it may not be included because of its importance as an essential element in any hardrock uranium search. We wish to be reassured that lead will be included.

Oak Ridge, being unable to analyze for fluorine, another essential uranium pathfinder, project monitors have arranged for BFEC Grand Junction laboratories to analyze some of our rock samples for tin, tungsten and fluorine. To date we have requested ORGDP to submit to BFEC pulps of 80 samples for these analyses. We understand that some of these pulps arrived

December 7, 1979. We recommend that some or all of these samples be analyzed for uranium chemically or by neutron-activation as a check on the ORGDP analyses. We have been asked to choose 6 pathfinder elements in addition to

U, Th for ORGDP to treat statistically. We prefer to delay this decision

until we receive more analyses. Tentatively, we like Pb, Mo, Cu, Zn, and

K but will not make a final decision until we observe significant amounts

of and significant variations in these elements in a large number of samples.

Scheduling

In our First Interim Report of 4 August 1979, wd indicated need for a

project stretchout to June 1, 1980 to allow for lengthy sample turnaround and the flexibility to support the Central Arizona Arch Project and other clients. It appears now that this estimate was too conservative and that an additional month or more time will be needed. NW Arizona Plutonics Subcontract No. 79-348-S BFEC Proj.No.30-79-3307

Second Interim Report

Signature Page

ames D. Loghry Walter E. Heinrichs,J.

Box 5964 Tucson,Az 85703 25 January 1980

Phone (602) 623-0578

Distribution: Mr. Hal Gardner: 1 copy and 2 of transmittal letter

World Class, Dr. Young: 1 copy and 2 of transmittal letter

Subcontracts: 1 copy and one copy of transmittal letter