 | | Journal (article/letter/editorial) | | Mineralization in the Comstock District, Nevada DONALD M. HUDSON† 1540 Van Petten Street, Reno, Nevada 89503 Abstract...metal deposits of the world-renowned Comstock district of western Nevada constitute one of several superimposed...superimposed Miocene hydrothermal systems. In the district, Mesozoic metasedimentary and igneous rocks are...kaolinite alteration exposed at the periphery of the district may be linked to preore alteration near the paleowater...of subore-grade massive quartz veins and quartz-adularia stockworks were deposited in steeply to moderately |  | | Journal (article/letter/editorial) | | of Compartmentalized Fluid Flow, Comstock Lode, Virginia City, Nevada BYRON R. BERGER,† U.S. Geological...V. TINGLEY, Nevada Bureau of Mines and Geology, University of Nevada, Reno, Reno, Nevada 89557 AND LAWRENCE...vein district world class. In the world-class silver- and gold-producing Comstock mining district, Nevada...of evidence lead to the conclusion that the Comstock lode is localized in an extensional stepover between...subeconomic, banded quartz-adularia veins were deposited in the normal fault zone, the Comstock fault, and along |  | Vikre, Peter G., McKee, Edwin H., Silberman, Miles L. (1988) Chronology of Miocene hydrothermal and igneous events in the western Virginia Range, Washoe, Storey, and Lyon counties, Nevada. Economic Geology, 83 (4) 864-874 doi:10.2113/gsecongeo.83.4.864 | Journal (article/letter/editorial) | | WESTERN VIRGINIA RANGE, WASHOE, STOREY, AND LYON COUNTIES, NEVADA PETER G. VIKRE, ASARCOIncorporated...Menlo Park laboratories. forms the Comstock,Silver City, Occidental, and The decayconstants usedfor 4...pervasivelyaltered quartz-aluniterocks zonitein the Utah mine (Comstocklode footwall)is have formed in extrusive...donein the labora- walls and footwalls of the Comstock, Silver City, tories of the U.S. GeologicalSurvey...AGES (10• YRS) QUARTZ-ALUNITE ASSEMBLAGE COMSTOCK/OCCIDENTAL SILVER CITY/FLOWERY ASSEMBLAGE mal• • |  | Yang, K., Huntington, J. F., Boardman, J. W., Mason, P. (1999) Mapping hydrothermal alteration in the Comstock mining district, Nevada, using simulated satellite‐borne hyperspectral data. Australian Journal of Earth Sciences, 46 (6) 915-922 doi:10.1046/j.1440-0952.1999.00754.x | Journal (article/letter/editorial) | | Mapping hydrothermal alteration in the Comstock mining district, Nevada, using simulated satellite-borne hyperspectral...P. MASON1 1 CSIRO Division of Exploration and Mining, PO Box 136, North Ryde, NSW 1670, Australia. Analytical...Geophysics, 4450 Arapahoe Avenue, Boulder, CO 80303, USA. 2 Hydrothermal alteration mapping with spaceborne...hyperspectral data was simulated in the Comstock mining district, Nevada in order to evaluate the mineral mapping...major change in alteration assemblages across the Comstock and Silver City Faults, and a gradual variation |  | | Report (issue) | | Deposits-Part I The Goldfield Gold District, Esmeralda and Nye Counties, Nevada By ROGER P. ASH LEY The Tonopah...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 (chapter) | | volcanism: a review R. H. Sillitoe Department of Mining Geology, Royal School of Mines, Imperial College...type, areassociated with either propylitic (+ adularia) or advanced argillic alteration, and cut mid-...sericitization and silicification, commonly with adularia, bounding the veins. Propylitization is, however...quantities of pyrite, calcite, dolomite, barite, adularia, rhodochrosite, rhodonite and fluorite. production...is broadly coextensive with the Sierra Madre Occidental and the Trans-Mexico volcanic belt, but in the |  | | Report (issue) | | Rocks in Parts of the Virginia City Quadrangle, Nevada GEOLOGICAL SURVEY PROFESSIONAL PAPER 936 ...Rocks in Parts of the Virginia City Quadrangle, Nevada By DONALD H. WHITEBREAD GEOLOGICAL SURVEY PROFESSIONAL...rocks in parts of the Virginia City quadrangle, Nevada. (Geological Survey Professional Paper 936) Bibliography:...Volcanic ash, tuff, etc.-Nevada-Storey Co. 2. Volcanic ash, tuff, etc.-Nevada-Lyon Co. 3. Geology, StratigraphicMiocene...Metamorphism (Geology) 5. Geochemistry-Nevada-Storey Co. 6. Geochemistry-Nevada-Lyon Co. I. Title. II. Series: |  | | Report (issue) | | THE TRIASSIC TO JURASSIC MAGMATIC ARC OF WESTERN NEVADA AND EASTERN CALIFORNIA by Jeff L. Doebrich 1 ,...Open-File Report 96-9 Prepared in cooperation with the Nevada Bureau of Mines and Geology This report is preliminary...School of Mines, University of Nevada, Reno, Nevada 89557-0047 'Nevada Bureau of Mines and Geology, MS...MS 178, University of Nevada, Reno, Nevada 89557-0088 'U.S. Geological Survey, Retired, 8920 West 2nd................................................ Adularia-Sericite Epithermal Gold-Silver Veins ....... |  | | Journal (article/letter/editorial) | | Deposition in theTonopah,Comstock Lode, andGoldfieldMiningDistricts,Nevada* Hos• P. TAYLOR,J'R. Abstract...the time of mineralization. ßTuscarora NEVADA 'COMSTOCK %A• ODE rata ß Round Mtn. This shouldsimplifythe...kaolinization, or as at Goldfield,to alunitization. Adularia may also be presentin the veins. In all three...Forester, 1971; Forester and FIG. 1. Index map of Nevada showing locations of the ore Taylor, 1972) that...(•$400 million), and Goldfield (•$100 million) mining districts are among the richest epithermal gold-silverdepositsin |  | | Report (issue) | | MINERAL DEPOSITS OF THE RENO 1° x 2° QUADRANGLE, NEVADA, with a comprehensive bibliography by Gary R...Figure 1. Location map of mining districts in the Reno 1° x 2° quadrangle, Nevada..........................Known production from mining districts in the Reno 1° x 2° quadrangle, Nevada..........................of mineral deposits in mining districts of the Reno 1° x 2° quadrangle, Nevada..........................prospects, and claims in the Reno 1° x 2° quadrangle, Nevada.......................................... 19 21 |  | | Report (issue) | | in Progress for the Reno 1° x 2° CUSMAP Project, Nevada, with additional bibliography by Gary B. Sidder...GEOPHYSICS ADDITIONAL STUDIES ADDITIONAL INFORMATION FOR MINING DISTRICTS Shady Run (Fondaway Canyon) Broken Hills...information to Sidder (1986) on deposit types and mining districts in the Reno quadrangle and additional...Water Resources Division (WRD) in Carson City, Nevada, is conducting a major study of the Carson River...gold (Bagby and Berger, 1985; Tooker, 1985) and Comstock-type volcanic-hosted gold (Mosier, Singer, and |  | | Journal (article/letter/editorial) | | south. The Cordillera has a long and colorful gold-mining history dating back to the 16th century, since...reduced felsic equigranular intrusion 10 Orogenic lode Au Granitoid Shear zone FIG. 1. Schematic geologic...dacitic volcanic rocks Intermediate argillic ± adularia Mixed magmaticmeteoric Simmons et al. (2005)...basaltic volcanic rocks Intermediate argillic ± adularia Mixed magmaticmeteoric Simmons et al. (2005)...Alkaline volcanic rocks Intermediate argillic ± adularia Magmatic Simmons et al. (2005) Mo Quartz diorite |  | | Report (chapter) | | Survey, Federal Center MS 964, Denver, CO 80225, USA (e-mail: bberger@usgs.gov) Abstract: High-temperature...sets. The Virginia City and Goldfield mining districts, Nevada, were localized in zones of strike-slip...western margin of North America. The Camp Douglas mining area occurs within the same belt, but is localized...from two economically important precious-metal mining districts (Virginia City, Goldfield) and one economically...Lower to Middle Miocene volcanic centres in western Nevada (Fig. 1). These districts provide insights into |  | Ashley, Roger P., Goetz, A.F.H., Rowan, L.C., Abrams, M.J. (1979) Detection and mapping of hydrothermally altered rocks in the vicinity of the Comstock Lode, Virginia Range, Nevada, using enhanced Landsat images. Open-File Report Vol. 1979 (79-960) US Geological Survey doi:10.3133/ofr79960 | Report (issue) | | ALTERED ROCKS IN THE VICINITY OF THE COMSTOCK LODE, VIRGINIA RANGE, NEVADA, USING ENHANCED LANDSAT IMAGES ...ALTERED ROCKS IN THE VICINITY OF THE COMSTOCK LODE, VIRGINIA RANGE, NEVADA, USING ENHANCED LANDSAT IMAGES By...areas. The most important deposit is the Cornstock Lode, which produced 192 million troy ounces of silver...Scanner (MSS) images for a test area in south-central Nevada. Rowan and others (1974) made gray-tone film positives...vegetation and slope conditions. In south-central Nevada Rowan and others (1974) readily separated bleached |  | | Journal (article/letter/editorial) | | :quartz-rhodonite/johannsenite-albite, quartz-adularia,and quartz-calcite;(8) white to amethystincvuggy...bonanza-type preciousmetal vein deposits.The Tayoltita mine has produced107kg Ag and 2 X 105kg Au and thusr...little-known,exampleof such deposits.Unlike the Comstock(Becker, 1882; Bastin,1928),Tonopah(Spurt, 1905;Burgess...Durango,Mexico. Productionfrom the San Dimas district spansa 1976)districtswhereaccess to the underground...reopened The townof Tayoltita(Fig. 1), for whichthe mine many of the old Spanishworkingsduring the 1880s |  | Camprubi, A., Ferrari, L., Cosca, M. A., Cardellach, E., Canals, A. (2003) AGES OF EPITHERMAL DEPOSITS IN MEXICO: REGIONAL SIGNIFICANCE AND LINKS WITH THE EVOLUTION OF TERTIARY VOLCANISM. Economic Geology, 98 (5) 1029-1037 doi:10.2113/gsecongeo.98.5.1029 | Journal (article/letter/editorial) | | Guitarra deposit, Temascaltepec district. From the latter, adularia from a barren stage of mineralization...by the 40Ar/39Ar method. The ages obtained from adularia samples are 32.9 ± 0.1 Ma and 33.3 ± 0.1 Ma, corresponding...the main volcanic pulses of the Sierra Madre Occidental. The distribution of epithermal deposits can...Sierra Madre Occidental, and are related to the Laramide magmatism of the Sierra Madre Occidental. Many of...episode of ignimbrite flare-up of the Sierra Madre Occidental. The third group includes the Bolaños, San Martín |  | | Report (volume) | | Mineral Resources of the Reno 1 o by 2° Quadrangle, Nevada and California U.S. GEOLOGICAL SURVEY BULLETIN...Mineral Resources of the Reno 1 o by 2° Quadrangle, Nevada and California By DAVID A. JOHN, JOHN H. STEWART...mineral resources of the Reno 1o by 2° quadrangle, Nevada and California I by David A. John ... [et al.]...resources-Nevada-Reno Region. 2. Mines and mineral resources-California. 3. Geology-Nevada-Reno Region...Volcanic-hosted epithermal gold-silver deposits 40 Adularia-sericite (Comstock) gold-silver veins 41 Quartz-alunite |  | | 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 | | | 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 |  | Montoya-Lopera, Paula, Levresse, Gilles, Ferrari, Luca, Orozco-Esquivel, Teresa, Hernández-Quevedo, Gabriela, Abdullin, Fanis, Mata, Luis (2020) New geological, geochronological and geochemical characterization of the San Dimas mineral system: Evidence for a telescoped Eocene-Oligocene Ag/Au deposit in the Sierra Madre Occidental, Mexico. Ore Geology Reviews, 118. 103195 doi:10.1016/j.oregeorev.2019.103195 | Journal (article/letter/editorial) | | Eocene-Oligocene Ag/Au deposit in the Sierra Madre Occidental, Mexico Paula Montoya-Lopera, Gilles Levresse...Eocene-Oligocene Ag/Au deposit in the Sierra Madre Occidental, Mexico, Ore Geology Reviews (2019), doi: https://doi...Eocene-Oligocene Ag/Au deposit in 3 the Sierra Madre Occidental, Mexico. 4 5 Paula Montoya-Lopera1, Gilles...unam.mx 15 16 Abstract 17 18 The San Dimas district is a historical world class Ag/Au epithermal deposit...deposit 19 located in the Sierra Madre Occidental (SMO) of western Mexico. San Dimas has been 20 |  | Hodges, C.A., Cox, D.P., Singer, D.A., Case, J.E., Berger, B.R., Albers, J.P. (1984) U.S. Geological Survey-INGEOMINAS mineral resource assessment of Colombia. Open-File Report Vol. 1984 (84-345) US Geological Survey doi:10.3133/ofr84345 | Report (issue) | | lead-zinc deposits (4.8) 28 Epithermal gold, quartz-adularia type (5.4) 30 Hot springs gold-silver deposits...lead-zinc deposits 27 13. Epithermal gold, quartz-adularia type 29 14. Hot springs gold-silver deposits...the Cordillera Central and southern Cordillera Occidental may well be rewarding. 4) Detailed study of...complex mineralogy (such as the California-Vetas district) would be useful, not only for exploration in...in such areas may be appropriate. 12° SIERRA NEVADA DE SANTA MARTA Figure 1. Geologic provinces of |  | | Report (issue) | | Low sulfide quartz Au 5.4 Epithermal Au, quartz adularia type 5.5 Epithermal Au, quartz alunite type 5...Norte Cty, CA Santa Helena, Antioquia, Colombia Goto Mine, Luzan, P.I. References Wells, F. G. et al 1946...upward from Mo+Cu to Cu, Au to Zn, Buckingham, Nevada USSR deposits References Blake and others, 1979...(Cyprus), York Harbor, (Canada) Turner-Albright, (USA) References 3.1 (continued) Petersen and Zantop...Regional Mn halos Examples References Sullivan mine, Canada Hamilton and others (1981) Sediment hosted |  | | Journal (article/letter/editorial) | | Formation of Silver-GoldVeins in the Tayoltita Mine, SanDimas District, Mexico MIKE CLARKE* AND SPENCER R. TITLEY...someaspectsof the hydrothermalevolutionof the mas mining district, west-centralMexico (Fig. 1). systemduringore...opportunityto studya significantexampleof the adularia-sericitetype of volcanic-hosted epithermal depositof...al. (1987). A number of earlier The San Dimas district is located in the Sierra mineralization,andw...presentstudyalsodocuments mineralogical the Tayoltita mine range from 43.1 ___1.0 to 42.8 0.5 m.y. comparedwith |  | Montoya-Lopera, Paula, Levresse, Gilles, Ferrari, Luca, Luca Rizzo, Andrea, Urquiza, Santiago, Mata, Luis (2020) Genesis of the telescoped Eocene silver and Oligocene gold San Dimas deposits, Sierra Madre Occidental, Mexico: Constraints from fluid inclusions, oxygen - deuterium and noble gases isotopes. Ore Geology Reviews, 120. 103427 doi:10.1016/j.oregeorev.2020.103427 | Journal (article/letter/editorial) | | Oligocene gold San Dimas de‐ posits, Sierra Madre Occidental, Mexico: constraints from fluid inclusions, oxygen...Oligocene gold San Dimas deposits, Sierra Madre Occidental, Mexico: constraints from fluid inclusions, oxygen...Oligocene gold San Dimas deposits, Sierra Madre Occidental, Mexico: constraints from fluid inclusions, oxygen...Tayoltita, Dgo., Mexico Abstract The San Dimas district is a world-class Ag/Au deposit, developed as a...Ag/Au mineralization located in the Sierra Madre Occidental (SMO) of western Mexico. San Dimas exhibits multiple |  | | Journal (article/letter/editorial) | | at: No. 19, Beitucheng Western Road, Chaoyang District, 100029 Beijing, P.R. China. E-mail address:...deposition of bladed calcite, colloform quartz, and adularia, as well as the generation of steam-heated waters...et al. (1999) classified LS deposits of northern Nevada as type 1 LS (associated with a western andesite...as primary gangue minerals, illite / smectite – adularia as key proximal alteration minerals. IS deposits:...ore minerals, quartz - manganiferous carbonate ± adularia ± manganiferous silicate ± barite as gangue minerals |
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