DOCSLIB.ORG

GEOLOGY and ORE DEPOSITS of the PIOCHE DISTRICT, NEVADA Plate 5, B

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
GEOLOGY and ORE DEPOSITS of the PIOCHE DISTRICT, NEVADA Plate 5, B UNITED STATES DEPARTMENT OF THE INTERIOR Ray Lyman Wilbur, Secretary GEOLOGICAL SURVEY W. C. Mendenhall, Director Professional Paper 171 G EOLOGY AND ORE DEPOSITS OF THE PIOCHE DISTRICT, NEVADA BY LEWIS G. WESTGATE AND ADOLPH KNOPF UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON: 1932 For salo by the Superintendent of Documents, Washington, D. C. ------------------ Price 85 cents CONTENTS Page Abstract.. __.______...____________________________________.-_._____-__--__-__-------_____-. vn Part 1. General geology, by Lewis G. Westgate________--_________---_-_________-__--_-____--_-_-_____----------- 1 Introduction._ __.__________._____-_____-____________________-_-_---_-_______--__-___-___-______---------- 1 Location ____________________________________________________________________________________________ 1 Acknowledgments..._ ________________________________-_____-_______--____-_-__-_-_--_______--------- 1 Bibliography__ ____________________________-___________-___________-_-___-__-_--____-___-___-------- 1 Physiography._______________________________________________________________________________________ 1 Climate_.___..______________________-__---_________-_____---_-___-_______-_-__--__---_--__-------- 4 Water supply_______-_-______----____--__-_--_-_--__-___-___-_-_-l__---_---_-_-_-_-----__-___-----__- 4 Vegetation._ ______________-______-___--__-________-_________-______.-_--__-_-__----_-_---_-_-----_- 4 History _____________________________________________________________________________________________ 4 Geology...... ____________________ _-__--____._.__-___ ----_____-_____----__-_-------_--------- 6 Sedimentary formations.____-__-_-__________-__..___-----_____---____-__-___-_-__--__-__--_---_-------- 6 Cambrian system._____________________;.__________________________________________________________ 6 Lower Cambrian series.________________________________-_.___________-_-_-_-_-_-.__--_-_----_- 6 Prospect Mountain quartzite____-______-__-_____________-_______________-________-------_ 6 Pioche shale_____________________________________________________________________________ 8 Middle Cambrian series._-___--____-_-________--_____-_______-___-___-_---_-_-______-----_---. 10 Lyndon limestone________________________________________________________________________ 10 Chisholm shale-__________________________________________________________________________ 10 Highland Peak limestone__________________________________________________________________ 11 Upper Cambrian series._____________-_______--_________-__________-__--____-_------___------_- 13 Mendha limestone._______________________________________________________________________ 13 Ordovician system.________________________________________________________________________ _____ 14 Yellow Hill limestone-________________-_____-__-_____---_____--______--_________-__-_--------- 14 Tank Hill limestone_________________________________________________________________________ 14 Eureka quartzite_____________________________________________________________________________ 15 Ely Springs dolomite_____-___------_-_____-_-______-______-________-_-___---__-_-___--_---- 15 Silurian system____________________________ .____________-_____________________-_________-____^_ 16 Devonian system.________________________________________________________________________________ 16 Silverhorn dolomite and West Range limestone_________________________________________________ 16 Carboniferous system.____________________________________________________________________________ 19 Mississippian series._________------_--_-_____---_-____-______________________-_-______-__-_--_ 20 Bristol Pass limestone____________________-_-_____-_-_______-_--__-_-____--_____--__----__- 20 Peers Spring formation.____________________________________________________________________ 20 Scotty Wash quartzite--_____--_-___-____________---_____-__--_-_--__-___--___---_-------- 21 Mississippian and Pennsylvanian series___________________________________________________.______ 21 Bailey Spring limestone_-__-_____-_-_______________-_____-_____-___-_____--________----_-_ 21 Tertiary system._________________________________________________________________________________ 23 Pliocene (?) series_____________-____--_______-_______----____-_______-_-___-_-_-__-___----_--- 23 Panaca formation..._____________________________________________________________________ 23 Quaternary system._______________________________________________________________________________ 26 Valley alluvium______________________________________________________________________________ 26 Igneous rocks._..___.:____._..___________.__.______________.________________.________._______________ 26 Tertiary (?) lavas._________.___________________________._______________.-_-_.__ 26 General features__--___-----__-______---__-____--__-_-______-__-___-_-___-_-________----_--- 26 Condor Canyon section _______________________________________________________________________ 27 Black Canyon section.________________________________________________________________________ 29 Ely Springs and Delmues Well sections_______________________________________________________ 30 Northwestern area..._________________________________________________________________________ 31 Related dikes._________________________________________________________________________________ 32 Intrusive rocks...________________________________________________________________________________ 32 Quartz monzonite and associated porphyries at Blind Mountain____________________________________ 32 Quartz monzonite-_______________________________________________________________________ 32 7: Associated dike rocks__________--_______________________-________________________________ 35 ^ Granite porphyry dikes.______________________________________________________________________ 35 Minor occurrences of granitic rock____________________._________________________________________ 36 Lamprophyre._______________________________________________________________________________ 36 Diabase of the Ely Range________________________________._____________-__--_-.___ 36 m IV CONTENTS Part 1. General geology, by Lewis G. Westgate Continued. Geology Continued. Contact metamorphism, by Joseph L. Gillson.___________________________________________________________ 36 Blind Mountain area____________________________________________________________________________ 37 Size of area and rocks affected.________________________________________________________________ 37 Limestones ________________^______________________________________^___________.______________ 37 Pioche shale.________________________________________________________________________________ 37 Lavas and tuffs_______________________________________________________________________________ 38 Mixed rocks________________________________________.________________________________________ 40 Manhattan Gap area.____________________________________'______.___________________^______________ 41 Conclusions. ___________________.________________________________________________ _________________ 42 Structure_ _____-_--_-_-----_-_-______________.___________-_-_______-___-____-_____________.__-____- 42 Thrust faulting_______________________________________________________________________________ 42 Earlier normal faulting-___________________________________________________________________________ 43 Later normal faulting._-_-__-______^_________-____________-______-_-______________________________ 44 Brecciation ______________________________________________________________________________________ 44 Part 2. Economic geology, by Adolph Knopf____________________________________________________________________ 45 General features of the ore deposits...._________________________________________________:____________________ 45 Oxidation and water level.________________________________________________________________________________ 46 Mineralogy._____________________________________________________________________________________________ 47 Veins in quartzite.________________________________________________________________________________________ 48 Ore bodies in granite porphyry_-___________________________________________________________________________ 49 Replacement deposits in carbonate rocks-__________-_______________________.________________________________ 49 General features___.________________________________________________________________________________ 49 Fissure veins.________________________________________________________________________________________ 50 Tabular replacement deposits ("bedded ores")----------------------------------------------------------- 50 Silver-bearing jasperoid at Silverhorn.______________________________________________________________________ 51 Genesis of the ore deposits_______________________________________________________________________________ 51 Summary and conclusions.______________________ ________________________________________________________ 53 The mines.______________________________________________________________________________________________ 53 Combined Metals mine______________________________________________________________________________ 53 History.______-.___________;____________________________________-_-______________________________ 54 General geology._________________________________________________________________________________ 54 Ore bodies.________ _ ____________________________________________________________________________
Load more

Recommended publications
  • This Article Appeared in a Journal Published by Elsevier. the Attached Copy Is Furnished to the Author for Internal Non-Commerci
    This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier’s archiving and manuscript policies are encouraged to visit: http://www.elsevier.com/copyright Author's personal copy Palaeogeography, Palaeoclimatology, Palaeoecology 264 (2008) 100–122 Contents lists available at ScienceDirect Palaeogeography, Palaeoclimatology, Palaeoecology journal homepage: www.elsevier.com/locate/palaeo Microstratigraphy, trilobite biostratinomy, and depositional environment of the “Lower Cambrian” Ruin Wash Lagerstätte, Pioche Formation, Nevada Mark Webster a,⁎, Robert R. Gaines b, Nigel C. Hughes c a Department of the Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, IL 60637, United States b Geology Department, Pomona College, 185 E. Sixth Street, Claremont, CA 91711, United States c Department of Earth Sciences, University of California, Riverside, CA 92521, United States ARTICLE INFO ABSTRACT Article history: The uppermost 43 cm of Dyeran strata at the Ruin Wash Lagerstätte (Chief Range, Lincoln County, Nevada) Received 13 November 2007 contain nonmineralized invertebrates and exceptionally preserved, articulated olenelloid trilobites. However, Received in revised form 4 March 2008 the environmental factors responsible for the preservation of olenelloids in this unusual state at Ruin Wash Accepted 3 April 2008 have received little study and are therefore poorly understood.
    [Show full text]
  • Shallow-Crustal Metamorphism During Late Cretaceous Anatexis in the Sevier Hinterland Plateau: Peak Temperature Conditions from the Grant Range, Eastern Nevada, U.S.A
    Shallow-crustal metamorphism during Late Cretaceous anatexis in the Sevier hinterland plateau: Peak temperature conditions from the Grant Range, eastern Nevada, U.S.A. Sean P. Long1*, Emmanuel Soignard2 1SCHOOL OF THE ENVIRONMENT, WASHINGTON STATE UNIVERSITY, PULLMAN, WASHINGTON 99164, USA 2LEROY EYRING CENTER FOR SOLID STATE SCIENCE, ARIZONA STATE UNIVERSITY, TEMPE, ARIZONA 85287, USA ABSTRACT Documenting spatio-temporal relationships between the thermal and deformation histories of orogenic systems can elucidate their evolu- tion. In the Sevier hinterland plateau in eastern Nevada, an episode of Late Cretaceous magmatism and metamorphism affected mid- and upper-crustal levels, concurrent with late-stage shortening in the Sevier thrust belt. Here, we present quantitative peak temperature data from the Grant Range, a site of localized, Late Cretaceous granitic magmatism and greenschist facies metamorphism. Twenty-two samples of Cambrian to Pennsylvanian metasedimentary and sedimentary rocks were analyzed, utilizing Raman spectroscopy on carbonaceous material, vitrinite reflectance, and Rock-Eval pyrolysis thermometry. A published reconstruction of Cenozoic extension indicates that the samples span pre-extensional depths of 2.5–9 km. Peak temperatures systematically increase with depth, from ~100 to 300 °C between 2.5 and 4.5 km, ~400 to 500 °C between 5 and 8 km, and ~550 °C at 9 km. The data define a metamorphic field gradient of ~60 °C/km, and are corroborated by quartz recrystallization microstructure and published conodont alteration indices. Metamorphism in the Grant Range is correlated with contemporary, upper-crustal metamorphism and magmatism documented farther east in Nevada, where metamorphic field gradients as high as ~50 °C/km are estimated.
    [Show full text]
  • UC Berkeley Paleobios
    UC Berkeley PaleoBios Title Bonnima sp. (Trilobita; Corynexochida) from the Chambless Limestone (Lower Cambrian) of the Marble Mountains, California: First Dorypygidae in a cratonic region of the southern Cordillera Permalink https://escholarship.org/uc/item/8fq03184 Journal PaleoBios, 30(2) ISSN 0031-0298 Author Foster, John R. Publication Date 2011-10-19 DOI 10.5070/P9302021790 Peer reviewed eScholarship.org Powered by the California Digital Library University of California PaleoBios 30(2):45–49, October 19, 2011 © 2011 University of California Museum of Paleontology Bonnima sp. (Trilobita; Corynexochida) from the Chambless Limestone (Lower Cambrian) of the Marble Mountains, California: First Dorypygidae in a cratonic region of the southern Cordillera JOHN R. FOSTER Museum of Western Colorado, P.O. Box 20,000, Grand Junction, CO 81502; [email protected] A trilobite pygidium, likely referable to the genus Bonnima, is the first evidence of a member of the Corynexochida reported from the Lower Cambrian (Dyeran Stage) Chambless Limestone of the southern Marble Mountains in the Mojave Desert of California. This specimen represents the first occurrence of the family Dorypygidae in the cratonic facies of the Lower Cambrian in the California-western Nevada region, as all of the few previous reports of the family (mostly Bonnia) have been from much thicker, more distal open-shelf deposits far to the northwest in the White- Inyo—Esmeralda County region of California and Nevada. Although still relatively rare, the occurrence of Dorypygidae across a range of environments biofacies realms in this area is typical of their distribution in other regions. INTRODUCTION from 5 cm to 1 m thick, and these beds generally decrease in The Chambless Limestone is a Lower Cambrian unit ex- thickness upward in the formation.
    [Show full text]
  • A Specific Gravity Index for Minerats
    A SPECIFICGRAVITY INDEX FOR MINERATS c. A. MURSKyI ern R. M. THOMPSON, Un'fuersityof Bri.ti,sh Col,umb,in,Voncouver, Canad,a This work was undertaken in order to provide a practical, and as far as possible,a complete list of specific gravities of minerals. An accurate speciflc cravity determination can usually be made quickly and this information when combined with other physical properties commonly leads to rapid mineral identification. Early complete but now outdated specific gravity lists are those of Miers given in his mineralogy textbook (1902),and Spencer(M,i,n. Mag.,2!, pp. 382-865,I}ZZ). A more recent list by Hurlbut (Dana's Manuatr of M,i,neral,ogy,LgE2) is incomplete and others are limited to rock forming minerals,Trdger (Tabel,l,enntr-optischen Best'i,mmungd,er geste,i,nsb.ildend,en M,ineral,e, 1952) and Morey (Encycto- ped,iaof Cherni,cal,Technol,ogy, Vol. 12, 19b4). In his mineral identification tables, smith (rd,entifi,cati,onand. qual,itatioe cherai,cal,anal,ys'i,s of mineral,s,second edition, New york, 19bB) groups minerals on the basis of specificgravity but in each of the twelve groups the minerals are listed in order of decreasinghardness. The present work should not be regarded as an index of all known minerals as the specificgravities of many minerals are unknown or known only approximately and are omitted from the current list. The list, in order of increasing specific gravity, includes all minerals without regard to other physical properties or to chemical composition. The designation I or II after the name indicates that the mineral falls in the classesof minerals describedin Dana Systemof M'ineralogyEdition 7, volume I (Native elements, sulphides, oxides, etc.) or II (Halides, carbonates, etc.) (L944 and 1951).
    [Show full text]
  • The Stratigraphic Section in the Vicinity of Eureka, Nevada
    The Stratigraphic Section in the Vicinity of Eureka, Nevada GEOLOGICAL SURVEY PROFESSIONAL PAPER 276 The Stratigraphic Section in the Vicinity of Eureka, Nevada By T. B. NOLAN, C. W. MERRIAM, and J. S. WILLIAMS GEOLOGICAL SURVEY PROFESSIONAL PAPER 276 Revision of the pre- Tertiary stratigraphy of east-central Nevada UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1956 UNITED STATES DEPARTMENT OF THE INTERIOR Douglas McKay, Secretary GEOLOGICAL SURVEY W. E. Wrather, Director For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C. - Price $1.00 (paper cover) CONTENTS Page Page Abstract_ _____________________ 1 Silurian system.___________________________ 36 Introduction. _--___-______--___- 2 Roberts Mountains formation.__________ 36 Acknowledgments- --.-_---___-_-. 3 Lone Mountain dolomite__________... 37 Structural setting._______________ 3 Devonian system.__________-_-_-__--_____. 40 Economic significance. _-__._. 5 Nevada formation_________--______--. 40 Cambrian system.________________ 5 Beacon Peak dolomite member. 42 Prospect Mountain quartzite.. 6 Oxyoke Canyon sandstone member... 43 Pioche shale_______--_-_-_.__. 7 Sentinel Mountain dolomite member. 43 Eldorado dolomite___________ 9 Woodpecker limestone member. 44 Geddes limestone.___________ 11 Bay State dolomite member.--...--. 45 Secret Canyon shale._________ 12 Devils Gate limestone._________________ 48 Lower shale member. .... 13 Meister member.__________________ 49 Hayes Canyon member.____________ 49 Clarks Spring member.._ 14 Devonian and Mississippian systems. ________ 52 Hamburg dolomite.___-_.____ 16 Pilot shale________-__-_-___--__---_-_. 52 Dunderberg shale.___________ 18 Carboniferous systems_.____-__-______-__- 54 Windfall formation.__________ 19 Mississippian system._________--,___-_- 54 Catlin member._________ 20 Joana limestone,___________________ 54 Bullwhacker member.
    [Show full text]
  • Cambrian and Precambrian Rocks of the Groom District Nevada, Southern Great Basin
    Cambrian and Precambrian Rocks of the Groom District Nevada, Southern Great Basin GEOLOGICAL SURVEY BULLETIN 1244-G Prepared on behalf of the U. S. Atomic Energy Commission Cambrian and Precambrian Rocks of the Groom District Nevada, Southern Great Basin By HARLEY BARNES and ROBERT L. CHRISTIANSEN CONTRIBUTIONS TO STRATIGRAPHY GEOLOGICAL SURVEY BULLETIN 1244-G Prepared on behalf of the U. S. Atomic Energy Commission UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1967 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 - Price 20 cents (paper cover) CONTENTS Page Abstract_______________________________________________ G 1 Introduction. _____________________________________________________ 1 Stratigraphy. _____________________________________________________ 4 Johnnie Formation____________________________________________ 4 Stirling Quartzite._____________________________________________ 4 Wood Canyon Formation_____________________________________ 5 Zabriskie Quartzite-___________________________________________ 10 Carrara Formation____________________________________________ 10 Bonanza King Formation_____________________________________ 12 Nopah Formation.____________________________________________ 13 Correlation.______________________________________________________ 20 References cited.__________________________________________________ 32 ILLUSTRATIONS Page FIGURE 1.
    [Show full text]
  • Bulletin 65, the Minerals of Franklin and Sterling Hill, New Jersey, 1962
    THEMINERALSOF FRANKLINAND STERLINGHILL NEWJERSEY BULLETIN 65 NEW JERSEYGEOLOGICALSURVEY DEPARTMENTOF CONSERVATIONAND ECONOMICDEVELOPMENT NEW JERSEY GEOLOGICAL SURVEY BULLETIN 65 THE MINERALS OF FRANKLIN AND STERLING HILL, NEW JERSEY bY ALBERT S. WILKERSON Professor of Geology Rutgers, The State University of New Jersey STATE OF NEw JERSEY Department of Conservation and Economic Development H. MAT ADAMS, Commissioner Division of Resource Development KE_rr_ H. CR_V_LINCDirector, Bureau of Geology and Topography KEMBLEWIDX_, State Geologist TRENTON, NEW JERSEY --1962-- NEW JERSEY GEOLOGICAL SURVEY NEW JERSEY GEOLOGICAL SURVEY CONTENTS PAGE Introduction ......................................... 5 History of Area ................................... 7 General Geology ................................... 9 Origin of the Ore Deposits .......................... 10 The Rowe Collection ................................ 11 List of 42 Mineral Species and Varieties First Found at Franklin or Sterling Hill .......................... 13 Other Mineral Species and Varieties at Franklin or Sterling Hill ............................................ 14 Tabular Summary of Mineral Discoveries ................. 17 The Luminescent Minerals ............................ 22 Corrections to Franklln-Sterling Hill Mineral List of Dis- credited Species, Incorrect Names, Usages, Spelling and Identification .................................... 23 Description of Minerals: Bementite ......................................... 25 Cahnite ..........................................
    [Show full text]
  • The Geology of the Central Part of the Favant Range, Utah
    THE GEOLOGY OF THE CENTRAL PART OF THE FAVANT RANGE, UTAH DISSERTATION sented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State Univers ity By HERMAN KENNETH LAUTENSCHLAGER, B • A. The Ohio State University 1952 Approved by: Adviser / 4 44 TABES OP CONTENTS Page INTRODUCTION .......................... 1 LOCATION AND ACCESSIBILITY ..................... 2 FIELD WORK AND MAPPING ......................... 4 PREVIOUS WORK .................................... 5 PHYSICAL FEATURES ............................... 7 ACKNOWLEDGMENTS ................................. 9 STRATIGRAPHY ......................................... 11 SEDIMENTARY R O C K S ........ 11 General Features <>............. 11 Cambrian System ..... 14 Tintic Quartzite 14 D e f i n i t i o n .............. 14 Distribution and 1ithology ....... 14 Stratigraphic relationships ..... 18 Age and correlation ............... 18 Ophir Formation ..... 20 D e f i n i t i o n ......................... 20 Distribution and 1ithology ..... 20 Stratigraphic relationships •••••• 20 Age and c o r r e l a t i o n ........ 21 Teutonic Limestone 21 Definition • . 21 Distribution and 1 ithology ...... 21 Stratigraphic relationships ...... 22 Age and correlation ........ 22 Dagmar Limestone ............ 23 Definition .................... 23 Distribution and 1ithology.*...... 23 Strat igraphie relat ionships ...... 24 Age and correlation ..... 24 i £ 0 9 4 2 8 Page Herkimer Limestone ...... 24 Definition ....................... 24 Distribution
    [Show full text]
  • 3.2 Geological, Paleontological, and Mineral Resources the Proposed
    TransWest Express EIS Section 3.2 – Geological, Paleontological, and Mineral Resources 3.2-1 3.2 Geological, Paleontological, and Mineral Resources The proposed project covers several physiographic provinces including the Wyoming Basins, Colorado Plateau, Middle Rocky Mountains, and Basin and Range provinces. The proposed routes cross a variety of bedrock and surficial deposits that also include geologic hazards. Mineral resources in the areas crossed by the proposed Project include oil and natural gas, coal, aggregate and industrial minerals. 3.2.1 Regulatory Background 3.2.1.1 Geological Resources Regulations pertaining to geological resources are concerned with the preservation of unique geological features. The National Registry of Natural Landmarks (16 USC 461-467) set up the National Natural Landmarks (NNL) program in 1962 and is administered under the Historic Sites Act of 1935. Implementing regulations were first published in 1980 under 36 CFR 1212 and the program was re-designated as 36 CFR 62 in 1981. A National Natural Landmark is defined as: • An area designated by the Secretary of the Interior as being of national significance to the United States because it is an outstanding example(s) of major biological and geological features found within the boundaries of the United States or its Territories or on the Outer Continental Shelf (36 CFR 62.2). • An area designated as one of the best examples of a biological community or geological feature within a natural region of the United States, including terrestrial communities, landforms, geological features and processes, habitats of native plant and animal species, or fossil evidence of the development of life (36 CFR 62.2).
    [Show full text]
  • U. S. Department of the Interior U. S. Geological Survey Geologic Map Of
    U. S. Department of the Interior U. S. Geological Survey Geologic Map of Kious Spring and Garrison 7.5' Quadrangles, White Pine County, Nevada and Millard County, Utah By Alien J. McGrew1 and Elizabeth L. Miller Department of Geological and Environmental Sciences, Stanford University. Stanford, CA 94305-2115 Compiled by Janet L. Brown, U.S. Geological Survey, Denver, CO 80225-0046 Open-File Report 95-10 Prepared in cooperation with the U.S. National Park Service This report was prepared under an interagency agreement between the U.S. Geological Survey and the U. S. National Park Service. This report is preliminary and has not been reviewed for conformity with the U.S. Geological Survey editorial standards (or with the North American Stratigraphic Code). Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. *Now at: Geologisches Institut ETH-Zentrum CH-8092 Zurich, Switzerland 1995 INTRODUCTION The Snake Range is located in White Pine County, east-central Nevada, in the northern Basin and Range Province. Sacramento Pass separates the range into two main parts, the northern and the southern Snake Range (fig. 1). The Kious Spring quadrangle, Nevada, and the adjacent Garrison quadrangle, Utah-Nevada, cover part of the eastern flank of the southern Snake Range. The Kious Spring quadrangle is one of six 7.5' quadrangles covering the Great Basin National Park (fig. 1). The Great Basin National Park was established to help preserve the unique geology, human history, and plant and animal communities that characterize this part of the Great Basin region.
    [Show full text]
  • First Annual Mineralogy Exhibit of the Franklin Kiwanis Club
    FIRST ANNUAL MINERALCGY EXHIBIT CF THE FRANKLIN KIWANIS CLUB - October 26th & 27th, 1957 This exhibit makes available for public view for the first time many of the principal private collections of the unique minerals of the Franklin-Sterling Area. These unusual ore bodies, comprising more minerals than are found anywhere else on earth, have intrigued mineralogists and collectors ever since their discovery. Dutch mining experts first explored the area in 1640. The ore bodies, whose principal metals are zinc, manganese and iron, continued to puzzle experts for the next two centuries. Mining operations were first successfully developed by The New Jersey Zinc Company, which succeeded in building a great industry from its beginnings at Franklin. The deposits at Franklin are now exhausted and its specimens have become collectors items. The 178 minerals found at Franklin-Sterling and the 29 minerals which have never been found elsewhere are listed below. MINERALS OF THE FRANKLIN-STERLING AREA Agurite Calcium, Lar- Halloysite Nasonite Albite senite Hancockite Ne oto c it e Allactite Celestite Hardystonite Niccolite Allanite Cerusite Hedyphane. Norbergite Amphibole Chalcocite Hematite Oligocase Actinolite Chalcophanite Hetacrolite Pararammels- Crocidolite Chalcopyrite Heulandite. ' bergite Cummingtonite Chleanthite Hodgkinsonite Pectolite Edenite Chlorite Holdenite Phlogopite Hastingsite Chlorophoenicite Hortonolite Prehnite Hornblende Magnesium Chl. Hyalophane Psilomelane Pargasite Chondrocite Hydrohans- Pyrite Tremolite Clinohedrite mannite
    [Show full text]
  • GEOLOGIC MAP of the LITTLEFIELD 30' X 60' QUADRANGLE, MOHAVE COUNTY, NORTHWESTERN ARIZONA by George H
    U.S. DEPARTMENT OF THE INTERIOR TO ACCOMPANY MAP I-2628 U.S. GEOLOGICAL SURVEY Version 1.0 GEOLOGIC MAP OF THE LITTLEFIELD 30' x 60' QUADRANGLE, MOHAVE COUNTY, NORTHWESTERN ARIZONA By George H. Billingsley and Jeremiah B. Workman INTRODUCTION 10 km north of the north-central part of the map and are the largest settlements near the map area. This map is one result of the U.S. Geological Survey's Interstate Highway 15 and U.S. Highway 91 provide intent to provide geologic map coverage and a better under­ access to the northwest corner of the map area, and Arizona standing of the transition in regional geology between the State Highway 389 provides access to the northeast corner. Basin and Range and Colorado Plateaus in southeastern Ne­ Access to the rest of the map area is by dirt roads maintained vada, southwestern Utah, and northwestern Arizona. Infor­ by the U.S. Bureau of Land Management, Arizona Strip Dis­ mation gained from this regional study provides a better trict, St. George, Utah. The area is largely managed by the understanding of the tectonic and magmatic evolution of an U.S. Bureau of Land Management, the Arizona Strip Dis­ area of extreme contrasts in late Mesozoic-early Tertiary trict, which includes sections of land controlled by the State compression, Cenozoic magmatism, and Cenozoic extension. of Arizona. There are several isolated sections of privately This map is a synthesis of 32 new geologic maps encom­ owned lands, mainly near the communities of Littlefield, passing the Littlefield 30' x 60' quadrangle, Arizona.
    [Show full text]