California · Mariposa County
Past Producer

Washington Mine

Mariposa County, California, United States
GoldLeadCopperSilver
⌖ Show on mapUSGS source ↗
Commodities
PrimaryGold
SecondaryLead, Copper, Silver
Commodity typeM
Deposit
Deposit typeHydrothermal vein
Model273: Low-sulfide Au-quartz vein
Orebody formTabular
Ore controlOre shoots within quartz veins. Also, gold mineralization associated with sulfides deposited during alteration of wall rock by ascending carbon-dioxide-bearing hydrothermal solutions.
Materials
Ore mineralsGold, Pyrite, Chalcopyrite
GangueQuartz
Geology
Host rockSchist,Hornfels · Mariposa Formation
StructureBear Mountains Fault Zone
AlterationCarbonate; ankerite, mariposite
Economic & production
Development statusPast Producer
Discovery year1850
Identification
Deposit ID10310691
Alternate namesRed Cloud, Jenny Lind, Washington No. 2, Josephine
RegionNA
Data scoreB
Coordinates37.52546, -120.22476
References
Bowen, O.E., Jr. and Gray, C.H., Jr., 1957, Mines and mineral resources of Mariposa County, California: California Journal of Mines and Geology, v. 53, nos. 1-2, p. 35-343.Castello, W.O., 1921, Mariposa County: California State Mining Bureau, 17th Annual Report of the State Mineralogist, p. 86-143.Clark, W. B., 1970, Gold districts of California: California Division of Mines and Geology Bulletin 193, p. 65-66.Clark. W. B., and Lydon, P.A., 1962, Mines and mineral resources of Calaveras County, California: California Division of Mines and Geology County Report No. 2, p. 72-73.Earhart, R.L., 1988, Geologic setting of gold occurrences in the Big Canyon area, El Dorado County, California: U.S. Geological Survey Professional Paper 1576, 13 p.Julihn, C.E., and Horton, F.W., 1940, Mineral industries survey of the United States - Mines of the southern Mother Lode Region, Part II - Tuolumne and Mariposa counties: U.S. Bureau of Mines Bulletin 424, 179 p.Knopf, A., 1929, The Mother Lode system of California: U. S. Geological Survey Professional Paper 157, 88 p.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.Logan, C.A., 1935, Mother Lode gold belt of California: California Division of Mines Bulletin 108, 240 p.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., 1896, Mariposa County: California State Mining Bureau, 13th Annual Report of the State Mineralogist, p. 216-225.Wagner, D.L., Bortugno, E.J., and McJunkin, R.D., 1990, Geologic map of the San Francisco-San Jose Quadrangle, California: California Department of Conservation, Division of Mines and Geology Regional Geologic Map Series, Map No. 5A, scale 1:250,000.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.