 | | Journal (article/letter/editorial) | | geochemistry of jasperoids from the Gold Bar district, Nevada Received: 17 May 2005 / Accepted: 11 June...Carlin-type gold mining districts located in the Battle Mountain–Eureka trend, Nevada. It is composed...faults in slope facies limestones of the Devonian Nevada Group exposed in windows through Ordovician basin...magnetic anomalies are notably absent. The Gold Bar district contains a variety of discordant and stratabound...apparent absence of any Eocene intrusions in the district, Gold Bar may be the product of a nonmagmatic |  | Yigit, O., Nelson, E. P., Hitzman, M. W., Hofstra, A. H. (2003) Structural Controls on Carlin-Type Gold Mineralization in the Gold Bar District, Eureka County, Nevada. Economic Geology, 98 (6) 1173-1188 doi:10.2113/gsecongeo.98.6.1173 | Journal (article/letter/editorial) | | Gold Mineralization in the Gold Bar District, Eureka County, Nevada OZCAN YIGIT, ERIC P. NELSON,† MURRAY...The Gold Bar district in the southern Roberts Mountains, 48 km northwest of Eureka, Nevada, contains one...distribution of Carlin-type ore deposits in the Gold Bar district. In this paper, we present results of detailed...structures and the distribution of gold deposits in the district. The nature and origin of the structures associated...deposit to district scale, with implications for structural exploration models. The Gold Bar mining district |  | | Report (issue) | | of the Arizona Geological society, society for Mining, Metallurgy and Exploration Inc., and the U. s...We also want to thank collectively, all of the mining companies and staff who graciously allowed us to...ALONG THE 1-80 CORRIDOR, RENO TO BATTLE MOUNTAIN, NEVADA R. Cuffney, R. Atkinson and R. Buffa Revised 1990...north-south ranges of central and northeastern Nevada (Fig. I). These belts, or their extensions, contain...vast majority of precious metal deposits found in Nevada to date. Our trip begins in the Walker Lane mineral |  | Hill, R.H., Adrian, B.M., Bagby, W.C., Bailey, E.A., Goldfarb, R.J., Pickthorn, W.J. (1986) Geochemical data for rock samples collected from selected sediment-hosted disseminated precious-metal deposits in Nevada. Open-File Report Vol. 1986 (86-107) US Geological Survey doi:10.3133/ofr86107 | Report (issue) | | SEDIMENT-HOSTED DISSEMINATED PRECIOUS-METAL DEPOSITS IN NEVADA By R. H. Hill, B. M. Adrian, W. C. Bagby, E. A...sediment-hosted precious-metal deposits sampled in Nevada....................... TABLES Table 1. Limits...selected sediment-no sted precious-metal deposits in Nevada, Table 3. Geochemical data for sediment-hosted...sediment-hosted disseminated precious-metal deposits in Nevada....... APPENDIX Appendix 1. Descriptions of analyzed...from sediment-hosted precious-metal deposits in Nevada.................... 22 INTRODUCTION This report |  | Theodore, T. G., Kotlyar, B. B., Singer, D. A., Berger, V. I., Abbott, E. W., Foster, A. L. (2003) Applied Geochemistry, Geology, and Mineralogy of the Northernmost Carlin Trend, Nevada. Economic Geology, 98 (2) 287-316 doi:10.2113/gsecongeo.98.2.287 | Journal (article/letter/editorial) | | and Mineralogy of the Northernmost Carlin Trend, Nevada TED G. THEODORE,† BORIS B. KOTLYAR, DONALD A. SINGER...King Midas Resources, Ltd., 3841 Amador Way, Reno, Nevada 89502 AND ANDREA L. FOSTER U.S. Geological Survey...interpretations of geochemical halos in the Carlin trend. District-scale geochemical patterns of several elements...theodore@usgs.gov 0361-0128/01/3329/287-30 $6.00 Nevada (Fig. 1). The study enhances ongoing efforts to...ET AL. 117° Buckskin 116° Woods Gulch Big Springs Getchell Trend Wright Window Twin Creeks Getchell |  | | Report (issue) | | CONTRIBUTIONS TO THE GOLD METALLOGENY OF NORTHERN NEVADA Richard M. Tosdal editor Open-File Report 98-338-6...Contributions to the gold metallogeny of northern Nevada Preface R.M. Tbsdfl/.............................the crustal structure near the Battle Mountain-Eureka mineral trend from geophysical constraints V.J...Regional crustal structure beneath the Carlin Trend, Nevada, based on deep electrical geophysical measurements...and its relation to gold belts in north-central Nevada: Overview and progress report V.J.S. Grawc/i.. |  | | Report (volume) | | Gold in Jasperoid, Elephant Head Area, Lander County, Nevada U.S. GEOLOGICAL SURVEY BULLETIN 2009 Geochemistry...Gold in Jasperoid, Elephant Head Area, Lander County, Nevada By TED G. THEODORE and GAIL M. JONES U.S....gold in jasperoid, Elephant Head area, Lander County, Nevada I Ted G. Theodore and Gail M. Jones. p. cm...ores-Geology-Nevada-Lander County. 2. JasperoidNevada-Lander County. 3. Geochemistry-Nevada-Lander County. I....Geologic map of the Elephant Head area, Lander County, Nevada In pocket FIGURES 1. 2. 3. 4. 5. 6. 7. 8 |  | Bagby, W.C., Haxel, G.B., Smith, D.B., Koch, R.D., Grubensky, M.J., Sherrod, D.R., Pickthorn, L.G. (1987) Mineral resource assessment of the Kofa National Wildlife Refuge, Arizona. Open-File Report Vol. 1987 (87-609) US Geological Survey doi:10.3133/ofr87609 | Report (issue) | | fault related(?) gold systems High temperature hot-spring systems Sedimentary-rock-hosted, disseminated precious-metal...Castle Dome anomaly (7) Geophysical data Review of mining and exploration activity Past production Recent...Cornstock epithermal veins, hotspring Au and hot-spring Hg deposits, and epithermal Mn deposits Domain...limonite pseudomorph of pyrite from the Livingston mine. The energy dispersive X-ray pattern shows the identifying...Sumner (1973). 8. Map showing the locations of mining districts in the KNWR area. 9. Gold grade versus |  | Doebrich, Jeff L., Albino, G.V., Barker, C.E., Duffield, W.A., Dunn, V.C., Hanna, W.F., McFarlan, J.P., McGuire, D.J., Miller, M.S., Peters, S.G., Plouff, Donald, Raines, G.L., Sawatasky, D.L., Spanski, G.T. (1994) Resource assessment of the Bureau of Land Management's Winnemucca District and Surprise Resource Area, Northwest Nevada and Northeast California. Open-File Report Vol. 1994 (94-712) US Geological Survey doi:10.3133/ofr94712 | Report (issue) | | MANAGEMENT'S WINNEMUCCA DISTRICT AND SURPRISE RESOURCE AREA, NORTHWEST NEVADA AND NORTHEAST CALIFORNIA...Field Office, Mackay School of Mines, University of Nevada, Reno, NV 89557-0047 2U.S. Geological Survey, Unit...Winnemucca District and Surprise Resource Area, an area covering 13.5 million acres in northwest Nevada and...Rock National Conservation Area), and the impact of mine dewatering on drainage basin groundwater resources...part of their Resource Management Plan for the District/Resource Area or for other planning units such |  | | Book | | Bagby US Geological Survey, Menlo Park, California, USA William Bagby received a Ph.D. in Earth Science from...rocks in the Sierra Madre Occidental, Mexico. His mining industry experience includes porphyry copper exploration...hot spring gold deposits. Research done at the USGS has been focused on gold deposits in Nevada and a...Berger US Geological Survey, Spokane, Washington, USA Byron Berger has been involved in exploration for...experience focused on Carlin- type deposits in northern Nevada, and during his tenure with the USGS he has conducted |  | Hofstra, A. H., Snee, L. W., Rye, R. O., Folger, H. W., Phinisey, J. D., Loranger, R. J., Dahl, A. R., Naeser, C. W., Stein, H. J., Lewchuk, M. T. (1999) Age constraints on Jerritt Canyon and other carlin-type gold deposits in the Western United States; relationship to mid-Tertiary extension and magmatism. Economic Geology, 94 (6) 769-802 doi:10.2113/gsecongeo.94.6.769 | Journal (article/letter/editorial) | | the ageof the golddeposits in the Jerritt Canyon district. Datedigneous rocks withwell-documented crosscutting...deposit in the Carlintrendand TheJerrittCanyon district(Fig.1)hasaccounted forabout consider many Carlin-type...Creta10percentof thegoldproduction in theregion.The district ceousin age.Ilchik(1995)prefersa lessthan39 Ma... (1996)favor golddeposits in theJerrittCanyon district havebeenthesub- the Post-Betze an age of ~95 Ma...80 to 90 Ma agefor goldmineralization Getcheil,Nevada,andconclude thatgoldmineralization was spatially |  | | Report (volume) | | mafic extrusive rocks 25a Descriptive model of hot-spring Au-Ag, by Byron R. Berger 25b Descriptive model...model of hot-spring Hg, by James J. Rytuba 178 Grade and tonnage model of hot-spring Hg by James J...rock types 133 Cross section through the Kalavos district Cyprus showing relationship of massive sulfide...Mn deposits 141 Cartoon cross-section of a hot-spring Au-Ag deposit 144 Cartoon cross section of a typical...deposits 177 Tonnages of hot-spring Bg deposits 179 Mercury grades of hot-spring llg deposits 179 Tonnages |  | | Report (volume) | | Donald A. Singer 20 Grade and tonnage model of hot-spring Au-Ag, by Byron R. Berger and Donald A. Singer...deposits 22 8. Tonnages of hot-spring Au-Ag deposits 24 9. Gold grades of hot-spring Au-Ag deposits 24 10. Silver...Silver grades of hot-spring Au-Ag deposits 25 11. Tonnages of sediment-hosted Au deposits 27 12. Gold...Arizona, southeastern California, and southernmost Nevada 53 Schematic diagram showing structural position...disseminated Ag-Au deposits 20 Grades and tonnages of hot-spring Au-Ag deposits 23 Grades and tonnages of sediment-hosted |
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