Mine detail: Lava Cap-Banner-Central Group

Previously called 'Central ConsolidatedSouth BannerNorth Banner'

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Location

Lat / long: 39.2275, -120.96972

Resource(M)

Primary: Gold, Silver
Ore: Gold, Silver, Pyrite, Galena, Arsenopyrite, Sphalerite, Freibergite, Pyrargyrite
Gangue: Quartz, Pyrite, Pyrrhotite
Orebody form: Tabular
Discovery year: 1860

Production

Operation type: Underground
Deposit type: Hydrothermal vein; hydrothermal stringer zone
Development status: Past Producer

Geology

Host rock:Lake Combie Complex, Yuba Rivers Pluton
Host type:Argillite,Slate,Granodiorite
Associated rock:Yuba Rivers Pluton
Associated type:Granodiorite
Structure:Weimar Fault Zone, Gillis Hill Fault
Tectonic:Magmatic arc
Alteration processes:None specifically reported in documents researched

References

DEP10310707
Reference{Deposit:: Chandler, J.W., 1941, Mining methods and costs of the Lava Cap Gold Mining Corporation, Nevada City, California: California Division of Mines, 37th Annual Report of the State Mineralogist, p. 409-425.}{Deposit:: Clark, W.B., 1970, Gold districts of California: California Division of Mines and Geology Bulletin 193, p. 97-101.}{Deposit:: Crawford, J.J., 1894, Nevada County: Twelfth Annual Report of the State Mineralogist, California State Mining Bureau, p. 194-195.}{Deposit:: Crawford, J.J., 1896, Nevada County: Thirteenth Annual Report of the State Mineralogist, California State Mining Bureau, p. 257.}{Deposit:: Hobson, J.B. and Wiltsee, E.M., 1893, Nevada City Mining District: Eleventh Annual Report of the State Mineralogist, California State Mining Bureau, p. 296.}{Deposit:: Hobson, J.B., 1890, Nevada City Mining District: Tenth Annual Report of the State Mineralogist, California State Mining Bureau, p. 387-389.}{Deposit:: http://yosemite.epa.gov/r9/sfund/r9sfdocw.nsf/2e3c0ceec080b048882573290078b56a/7f29f3b3740158ca88257007005e944f!OpenDocument}{Deposit:: Irelan, W., Jr., 1888, Nevada County: Eighth Annual Report of the State Mineralogist, California State Mining Bureau, p. 420-422.}{Deposit:: Johnston, W.G., Jr., 1938, Vein-filling at Nevada City, California: Geological Society of America Bulletin, v. 49, no. 1, p. 23-34.}{Deposit:: Johnston, W.G., Jr., 1940, The gold-quartz veins of Grass Valley, California: U.S. Geological Survey Professional Paper 194, 101 p.}{Deposit:: Koschmann, A.H., and Bergendahl, M.H., 1968, Principal gold-producing districts of the United States: U.S. Geological Survey Professional Paper 610, 283 p.}{Deposit:: Lindgren, W., 1896a, Geologic atlas of the United States - Nevada City Special Folio: U.S. Geological Survey Folio 29, 7 p..}{Deposit:: Lindgren, W., 1896b, Gold-quartz veins of Nevada City and Grass Valley: Seventeenth Annual Report of the U.S. Geological Survey, Part 2, p. 1-262}{Deposit:: Logan, C.A., 1923, Auburn Field Division: Eighteenth Annual Report of the State Mineralogist, California State Mining Bureau, p. 7.}{Deposit:: Logan, C.A., 1924, Nevada County: Twentieth Annual Report of the State Mineralogist, California State Mining Bureau, p. 9.}{Deposit:: Logan, C.A., 1930, Nevada County: Twenty-sixth Annual Report of the State Mineralogist, California Division of Mines, p. 101-102.}{Deposit:: Logan, C.A., 1935, Nevada County: Thirty-first Annual Report of the State Mineralogist, California Journal of Mines and Geology, p. 13, 16-17.}{Deposit:: MacBoyle, E.M., 1919, Mines and mineral resources of Nevada County: Sixteenth Annual Report of the State Mineralogist, California State Mining Bureau, p. 1-270.}{Deposit:: Metals Economics Group, 1983, The MineSearch annual: California, Oregon, and Washington, vol. VIII, 636 p.}{Deposit:: Saucedo, G.J. and Wagner, D.L., 1992, Geologic map of the Chico Quadrangle, California: California Department of Conservation, Division of Mines and Geology Regional Geologic Map Series, Map No. 7A, scale 1:250,000.}{Deposit:: Schweickert, R.A., Hanson, R.E., and Girty, G.H., 1999, Accretionary tectonics of the Western Sierra Nevada Metamorphic Belt in Wagner, D.L. and Graham, S.A., editors, Geologic field trips in northern California: California Division of Mines and Geology Special Publication 119, p. 33-79.}{Deposit:: Tuminas, A., 1983, Structural and stratigraphic relations in the Grass Valley-Colfax area of the northern Sierra Nevada, California: Ph.D. dissertation, University of California, Davis, 415 p.}
ReporterSchruben, Paul G., Higgins, Chris T,