State of Arizona Bureau of Geology and Mineral Technology
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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 prelim- inary 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