California · Amador County
Past Producer

Oneida Mine

Amador County, California, United States
GoldSilver
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold
SecondarySilver
Commodity typeM
Deposit
Deposit typeHydrothermal vein
Model273: Low-sulfide Au-quartz vein
Orebody formTabular, pinch and swell
Ore controlOre shoots within mesothermal gold bearing quartz veins.\n
Materials
Ore mineralsGold, Pyrite, Arsenopyrite
GangueQuartz, Slate
Geology
Host rockSlate,Greenstone · Mariposa Formation
StructureMelones Fault zone, Bear Mountains Fault zone, Melones Fault zone
Tectonic settingMagmatic arc
Economic & production
Development statusPast Producer
Discovery year1860
Identification
Deposit ID10310659
RegionNA
Data scoreB
Coordinates38.37349, -120.78812
References
Clark, W. B., 1970, Gold districts of California: California Divisions of Mines and Geology Bulletin 193, p. 69-76.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. 188.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.Irelan, W., Jr., 1888, El Dorado County, Church Mine: California State Mining Bureau, 8th Annual Report of the State Mineralogist, p. 79.Logan, C.A., 1934, Mother Lode gold belt of California: California Division of Mines Bulletin 108, p. 111-112.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.Storms, W.H., 1900, The Mother Lode region of California: California Mining Bureau Bulletin 18, p 60-63.Tucker, W.B., 1914, Amador County, Oneida Mine: California State Mining Bureau, 14th Annual Report of the State Mineralogist, p. 39.Additional information on the Oneida Mine is available in file no. 332-5917 (CGS Mineral Resources Files, Sacramento).Zimmerman, J.E., 1983, The Geology and structural evolution of a portion of the Mother Lode Belt, Amador County, California: unpublished M.S. thesis, University of Arizona, 138 p.