 | | Report (issue) | | Metals in Silicified Rocks of the Goldfield Mining District, Nevada GEOLOGICAL SURVEY PROFESSIONAL ...Metals in Silicified Rocks of the Goldfield Mining District, Nevada By R. P. ASHLEY and W. GEOLOGY ...GEOCHEI\1ISTRY OF THE GOLDFIELD MINING GEOLOGICAL SURVEY PROFESSIONAL DISTRICT, PAPER NEVADA 843-B Exploration...Exploration and geochemistry of the Goldfield mining district, Nevada UNITED STATES GOVERNMENT PRINTING...of the Goldfield Mining District, Nevada. (Geology and geochemistry of the gold mining district, Nevada) |  | | Journal (article/letter/editorial) | | KendallGold Mines, Goldfield, Nevada PETER G. VIKRE ASARCO Inc., 510 East Plumb Lane, Reno, Nevada 89502 Abstract...replacementof Miocenerhyolites2 mi (3.2 km) north of Goldfield,EsmeraldaCounty,Nevada.The ledges,which are approximately21...andvolcanicstratigraphyat Sandstorm-Kendall are similarto those of the main district,immediatelynortheastof...of the town of Goldfield,where more than 95 percentof pastgoldproductionoccurred.From1903 to 1947 4.2...whichcontainbeddedbaritedeposits elsewhere in southwestern Nevada,andsulfidesulfurfromTertiaryintrusions.Smallamountsof |  | | Report (issue) | | PAPER 66 THE GEOLOGY AND ORE DEPOSITS OF GOLDFIELD, NEVADA BY FREDERICK LESLIE RANSOME ASSISTED IN THE..._____ . ___________________ . _. Situation of the district.-~ ............... _..... ______ .. ________________________...______ ..... __ ........... _·_..... History of mining ....................... ............ . __ .. _... . . . . . . . . . . . . . . . . . . . . . . Sandstorm rhyolite ....................... _. ____ . ___.......... ............... . Correlation of the Goldfield rocks with those of the surrounding region_ . |  | | Journal (article/letter/editorial) | | 904-924 DirectDatingofMineralization atGoldfield, Nevada,by Potassium-Argon andFission-Track Methods R....K-mica from hydrothermally altered rocksat Goldfield,Nevada,yieldsmineralizationagesof 20 to 21 m.y.,...Summitville district of Colorado. Since 1970 we have obtained .several addi- tional .dateson Goldfield aluniteshav...y. Several premineralizationvolcanicunits at Goldfield cannotbe dated by the K-At methodowing to extensivealteration...K-bearingalterationminerals,alunite and biotite, the principal mineralsused for K-Ar and K-mica, alunite is the more |  | | Report (issue) | | SURVEY GEOCHEMISTRY OF THE ALTERED AREA AT GOLDFIELD, NEVADA, INCLUDING ANOMALOUS AND BACKGROUND VALUES...---- Illustrations Page Figure 1. Map of Goldfield, Nev., and vicinity, showing areas df hydrothermal...113 Geochemistry of the altered area at Goldfield, Nevada, including anomalous and background values...sampling program carried out in the Goldfield mining district, Esmeralda and Nye Counties, Nev. Geochemical...were collected from a 15-square-mile area at Goldfield which is underlain by hydrothermally altered volcanic |  | | Report (issue) | | PHOTOGRAPHY FROM THE GOLDFIELD MINIITG DISTRICT, E3MERALDA AITD NYE COUJITIES, NEVADA T>y Roger P. Ashley...field area Ore producing areas, Gqldfield mining district Color print and overlays, Area 1 Color print...PHOTOGRAPHY FROM THE GOLDFIELD MINING DISTRICT, ESMERALDA AND NYE COUNTIES, NEVADA Site 75 5 Mission ...Geological Survey Introduction General. The Goldfield mining district is in the western part of the Basin and...Altitudes range from about 5500 to 6900 feet. The district is underlain predominantly by volcanic rocks |  | | Journal (article/letter/editorial) | | GEOLOGY AND ORE-DEPOSITS DISTRICT, OF THE GOLDFIELD NEVADA2 F. L. RANSOME. PART II. MINES AND...divisions,which may be cohvenientlydesignatedthe "Goldfield" and "Diamondfield" groups. Of these the first...supplied over 95 per cent. of the output of the district and includessuch well-known mines as the Mohawk...Combination, Florence, Jumbo,January, Red Top and Sandstorm. The belt of productivemines of the Goldfieldgroup...subdividedinto a group of mineson the north, including the Sandstorm,Kendall and Conqueror,which are in rhyolite; a |  | | Report (issue) | | Deposits-Part I The Goldfield Gold District, Esmeralda and Nye Counties, Nevada By ROGER P. ASH LEY ...Precious-metal District, Esmeralda and Nye Counties, Nevada By ROGER P. ASH LEY The Republic Gold District, Ferry...Ferry County, Washington By MORTIMER H. STMTZ and ROBERT C. PEARSON The Comstock Lode Precious-metal District...District, Washoe and Storey Counties, Nevada By WILLIAM C. BAGBY and ROGER P. ASH LEY U.S. GEOlOGICAl...1857H 1 Gold ores-Nevada 2 Gold ores-Wash1ngton-Ferry County 3 Hydrothermal deposits-Nevada 4 Hydrothermal |  | | Report (volume) | | ACCOUNT OF GOLDFIELD, BULLFROG, AND FREDERICK LESLIE RANSOME NOTES ON THE MANHATTAN DISTRICT G. H. GARREY..................................... Gold field district............................................................................................... Mining development..................................................................................... Mine maps......;........................................ 20 22 22 22 25 25 28 34 37 38 39 Bullfrog district.............. ............................... |  | | Journal (article/letter/editorial) | | ASSOCIATION THE OF GOLDFIELD ALUNITE DISTRICT, WITH GOLD IN NEVADA. • FREDERICK LESLIE RANSOME...RANSOME. INTRODUCTION. Alunite, a hydroussulphateof potassiumand aluminiumwith the formula K20.3Al•Oa...obtainedfrom the aluniteby roastingand lixiviation. Alunite is found also on some of islands of the Grecian...on Calico Peak near Rico,4 in the NationaI Belle Mine near Silverton, 5 and at CrippleCreek,ø all in Colo•...TresCerritos, Ma[iposa County,California. • Mr. W. Lindgren2 found alunite in the Ryerson mine near Morenci, |  | | Report (issue) | | MINERALS OF NEVADA MINERALS OF NEVADA Peer Hen By CASTOR oan eGORY.C.oFER DOCK NEVADA AND BUREAU... UNIVERSITY Reno & Las Vegas OF NEVADA PRESS GEOLOGY Nevada Bureau of Mines and Geology Special...University of Nevada Press, Reno, Nevada 89557 USA Copyright © 2004 by University of Nevada Press Photographs...otherwise noted Map of Mining Districts and significant mineral occurrences of Nevada by Nevada Bureau of Mines...Cataloging-in-Publication Data Castor, Stephen B, Minerals of Nevada / Stephen B. Castor and Gregory C. Ferdock.— Ist |  | | Book | | f. MIMING DISTRICTS and MINERAL RESOURCES of NEVADA by FRANCIS CHURCH LINCOLN i r r i i ; %■... ; 'jxt . 1 — \ MINING DISTRICTS and MINERAL RESOURCES of NEVADA by FRANCIS CHURCH LINCOLN...LINCOLN 0 ll ; RENO NEVADA NEWSLETTER PUBLISHING COMPANY 1923 PREFACE Earlier Works. The object of...infor mation concerning the mining districts and mineral resources of Nevada. No comprehensive work of...peared for a number of years. In the early days of Nevada min ing, from 1866 to 1878, the field was covered |  | | Journal (article/letter/editorial) | | Gas Data from Goldfield and Tonopah Epithermal Au-Ag Deposits, Ancestral Cascades Arc, USA: Evidence for...Gas Data from Goldfield and Tonopah Epithermal Au-Ag Deposits, Ancestral Cascades Arc, USA: Evidence for...Data from Goldfield and Tonopah Epithermal Au-Ag Deposits, 2 Ancestral Cascades Arc, USA: 3 Evidence...Laboratory, P.O. Box 25046, MS 973, Denver, CO 80225, USA *Corresponding Author: amanning@usgs.gov Phone:...high-grade Goldfield and Tonopah 37 epithermal Au-Ag deposits in southwestern Nevada, USA. Ar and Ne |  | | Report (issue) | | geochemistry of acid-sulfate alteration and vein forming alunite by Robert O. Rye 1 Philip M. Bethke2 Michael D...wall-rock alteration, characterized by the assemblage alunite+kaolinite+ quartz±pyrite, results from base-leaching...andesitic volcanic terrains. In addition, coarse vein alunite may form in a magmatic-steam environment from rapid...oxygen in the carapace of a volcanic edifice. Alunite [KAh(SO4)2(OH)fil contains four stable isotope...measurements have been made on nearly 200 samples of alunite and associated minerals from 20 localities and |  | | Report (issue) | | the Summitville mine................... 29 INTRODUCTION The Summitville mining district has received...environmental problems related to mining activities. Summitville Consolidated Mining Company, Inc. (SCMCI), a...open-pit gold mine at Summitville during the period from 1986 to 1992. Although mining ceased in the...environmental impacts resulting from the abandoned mining operations. Of short term concern is the presence...pond. Acidic, metal-rich mine waters emanating from several sources on the mine site are long-term concerns |  | Swayze, G. A., Clark, R. N., Goetz, A. F. H., Livo, K. E., Breit, G. N., Kruse, F. A., Sutley, S. J., Snee, L. W., Lowers, H. A., Post, J. L., Stoffregen, R. E., Ashley, R. P. (2014) Mapping Advanced Argillic Alteration at Cuprite, Nevada, Using Imaging Spectroscopy. Economic Geology, 109 (5) 1179-1221 doi:10.2113/econgeo.109.5.1179 | Journal (article/letter/editorial) | | Mapping Advanced Argillic Alteration at Cuprite, Nevada, Using Imaging Spectroscopy Gregg A. Swayze1, Roger...Monterey, California 93943 4 740 5 AWK 6 Zion St., Nevada City, California 95959 Consulting Engineers, 1225...Miocene advanced argillic alteration at Cuprite, Nevada. Distributions of Fe-bearing minerals, clays, micas...toward altered areas and near intrusive rocks. Alunite composition varies from pure K to intimate mixtures...of huangite, the Ca analogue of alunite. Intimately mixed Na-K alunite marks areas of relatively lower | | | Report (issue) | | MINERALS OF NEVADA MINERALS OF NEVADA STEPHEN B. CASTOR and G R EGOR Y C . F E R D OC K l NEVADA BUREAU...association with the UNIVERSITY OF NEVADA PRESS Reno & Las Vegas Nevada Bureau of Mines and Geology Special...University of Nevada Press, Reno, Nevada 89557 USA Copyright© 2004 by Uni versity of Nevada Press Photographs...Districts and si gnificant minernl occurrences of Nevada by Nevada Bureau of Mines and Geology All rights reserved...-Publ ication Dat,i Castor, Stephen B. Minerals of Nevada/ Stephen B. Castor and Gregory C. Ferdock.- rst |  | | Journal (article/letter/editorial) | | assemblage and include the Comstock Lode, Tonopah, Goldfield, Aurora, Bodie, Paradise Peak, and Rawhide deposits...Famous districts include Comstock Lode, Tonopah, Goldfield, Aurora, and Bodie, and significant production...groups, high-sulfidation (acid-sulfate, quartz-alunite) and low-sulfidation (adularia-sericite) types...showed that lowsulfidation deposits in northern Nevada could be divided into two subtypes based on their...ve Ri Yellowstone Hot Spot Wyoming 0 Ma 40° Nevada S ie GREAT BASIN rra NNR Utah Ne da va California |  | | Journal (article/letter/editorial) | | volcanicdomerockandconsists of vuggysilica(central), quartz-alunite,quartz-kaolinite, argillic,andpropylitic(distal)zones...geologicmappingin the openpit, indicatethat vuggysilica,quartz-alunite,andquartz-kaolinite alteredrockconstitutemostof...the Au ore.Vuggysilicaaveraged2.4 ppmAu, quartz-alunite averaged1.2 ppmAu, andquartz-kaolinite averaged0...concentrations correlatemost consistently with quartz-alunite zones.Thalliumis alsoanomalous at Summitville....surfacewas the primary objectiveof underground mining in the late 1800s, when over 3,000 kg (100,000 |  | | Journal (article/letter/editorial) | | JUNE, •9•o AND ORE-DEPOSITS No. 4 OF THE GOLDFIELD DISTRICT, 'NEVADA2 F. L. RANSOME. PART I--G•.oLoG¾...oLoG¾. SITUATION AND TOPOGRAPHY. The Goldfield district, of which the geographicposition is shownin Fig...considerableexpanseof lava-cappedmesasouthwestof the town of Goldfield. Rough massesof silicified rock, which, owing...of Director of U.S. Geological Survey. The Goldfield district has been fully described in Professional...--F.L.R. 302 F. L. RANSOME. tral part of the district, and these outcrops are surroundedby wide concentriczonesof |  | | Report (volume) | | Rocks, Snowstorm Mountains and Vicinity, Northern Nevada By Alan R. Wallace and E.H. McKee................Terrill Mountains Area, Holy Cross District, Churchill County, Nevada By Stephen G. Peters, Richard F....of Hydrothermal Fluids and the Origin of Quartz-Alunite-Gold Deposits By George V. Albino................Eocene and middle Miocene volcanism in northern Nevada blanketed larger areas than has been previously...mapping by Peters and others (chapter D) in western Nevada has established a geologic and structural context |  | | Journal (article/letter/editorial) | | sulfatewall-rockalteration,characterized by the assemblage alunite+ kaolinitc + quartz+_pyrite, resultsfrom baseleachingby...entrainedatmospheric oxygenin the carapaceof a volcanicedifice. Alunite[KAla(SO4)•.(OH)6 ] contains four stableisotope...into attendantprocesses. Stableisotopeanalysesof alunite,often in combinationwith thoseon associated sulfides...horizontalzoning,the presenceof coevalpyrite, PO4analogues of alunite,zunyite,andlater gold,pyriteandenargite,andoft...presence carefulconsideration of the of alunite in the assemblage: alunite + kaolinitc ments.In manyinstances |  | Hedenquist, Jeffrey W., Matsuhisa, Yukihiro, Izawa, Eiji, White, Noel C., Giggenbach, Werner F., Aoki, Masahiro (1994) Geology, geochemistry, and origin of high sulfidation Cu-Au mineralization in the Nansatsu District, Japan. Economic Geology, 89 (1) 1-30 doi:10.2113/gsecongeo.89.1.1 | Journal (article/letter/editorial) | | 1-1-3Higashi,Tsuknba 305,Japan EIJI IZAWA, Department of Mining,KyushuUniversity, 6-10-1Hakozaki,Fnkuoka 812,Japan...associated with Cu sulfosalts and sulfides(e.g., Goldfield,Nevada; Lepanto,Philippines;Chinkuashih, Taiwan;E1Indio... the acid fluids responsiblefor alterationat Goldfield. Stevenand Ratte (1960) conducteddetailedstudies...Geologicmapof the Makurazaki(western)areaof the Nansatsu district(modifiedfrom Ministryof International TradeandIndustry...section (inset,a)through thecomplete Nansatsu district, from oldestmagmatism in thewestto thepresent |  | Bethke, Philip M., Rye, Robert O., Stoffregen, Roger E., Vikre, Peter G. (2005) Evolution of the magmatic-hydrothermal acid-sulfate system at Summitville, Colorado: integration of geological, stable-isotope, and fluid-inclusion evidence. Chemical Geology, 215 (1) 281-315 doi:10.1016/j.chemgeo.2004.06.041 | Journal (article/letter/editorial) | | Pennsylvania 15218, U.S.A. d U.S. Geological Survey, Reno, Nevada 89557, U.S.A. b Accepted 1 June 2004 Abstract...quartz monzonite porphyry intrusion underlies the district and is cut and overlain by pyrite–quartz stockwork...enclosed sequentially by alteration zones of quartz–alunite, quartz–kaolinite, and clay. The acidsulfate-altered...sulfur isotopes between coexisting alunite and pyrite. A deep alunite–pyrite pair yielded a sulfur-isotope...0x. The d 34S values of coexisting alteration alunite and pyrite are 18.2x to 24.5x and 8.1x to 2.2x |  | | Journal (article/letter/editorial) | | decreases, smectite ± illite, gypsum, barite, alunite, jarosite, pyrite, native gold, psilomelane, goethite...region and the area surrounding the Kışladağ gold mine. The aim of this study is to examine the mineralogical...Isotope Laboratory at Cornell University, New York, USA. Isotope corrections were performed using a two-point...amp: amphibole; cal: calcite; dol: dolomite; alu: alunite; jrs: jarosite; acc: accessory (abbreviations used...feldspar, and accessory minerals (gypsum, barite, alunite, locally jarosite, calcite, amphibolite and dolomite) |
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