Mine detail: South Eureka Mine

Previously called ''

<< Back to the map

Location

Lat / long: 38.38007, -120.79578

Resource(M)

Primary: Gold
Secondary: Silver
Ore: Gold, Pyrite, Arsenopyrite
Gangue: Quartz
Orebody form: Tabular, pinch and swell
Discovery year: 1891

Production

Operation type: Underground
Deposit type: Hydrothermal vein
Development status: Past Producer

Geology

Host rock:Mariposa Formation
Host type:Slate,Greenstone
Structure:Melones Fault zone, Bear Mountains Fault zone, Melones Fault zone
Tectonic:Magmatic arc
Alteration processes:Hydrothermal alteration of greenstone wall rocks resulting in disseminated auriferous pyrite in large enough bodies to constitute low-grade ore.

References

DEP10310684
Reference{Deposit:: Clark, W. B., 1970, Gold districts of California: California Divisions of Mines and Geology Bulletin 193, p. 69-76.}{Deposit:: Carlson, D.W., and Clark, W.B., 1954, Mines and mineral resources of Amador County: California Division of Mines, California Journal of Mines and Geology, v. 50, p. 192-193.}{Deposit:: Duffield, W.A. and Sharp, R.V., 1975, Geology of the Sierra foothills melange and adjacent areas, Amador County, California: U.S. Geological Survey Professional Paper 827, 30 p.}{Deposit:: Logan, C.A., 1927, Amador County, Lincoln Consolidated Mines: California State Mining Bureau, 23nd Report of the State Mineralogist, p. 180-182.}{Deposit:: Logan, C.A., 1934, Mother Lode gold belt of California: California Division of Mines Bulletin 108, p. 112-114.}{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:: Storms, W.H., 1900, The Mother Lode region of California: California Mining Bureau Bulletin 18, p 63-64.}{Deposit:: Tucker, W.B., 1914, Amador County, Oneida Mine: California State Mining Bureau, 14th Annual Report of the State Mineralogist, p. 46.}
ReporterDowney, Cameron (Higgins, Chris, T.), Schruben, Paul G.