Commodities
PrimaryGold
SecondarySilver
TertiaryCopper, Zinc, Lead, Iron
Commodity typeM
Deposit
Deposit typeHydrothermal vein
Model273: Low-sulfide Au-quartz vein
Orebody formTabular, lens
Ore controlErratic ore pockets in oxidized surface zone, dispersed auriferous sulfides within quartz
Materials
Ore mineralsGold, Quartz, Tourmaline, Epidote, Calcite
GangueGranite
Geology
Host rockGranodiorite,Granite · Sierra Nevada Batholith
Tectonic settingMagmatic arc
AlterationIntense alteration by segregation or replacement in granitic - granodioritic country rock. Alteration characterized by bluish quartz, black tourmaline (tourmalinization), epidote, calcite, and other minor gangue minerals
Economic & production
Development statusPast Producer
Discovery year1863
Identification
Deposit ID10310646
RegionNA
Data scoreB
Coordinates39.39569, -120.50682
References
Clark, W.B., 1970, Gold districts of California: California Division of Mines and Geology Bulletin 193, p. 89.Crawford, J.J., 1896, Nevada County, Excelsior Mine: California State Mining Bureau Report 13, p. 243.Irelan, W., Jr., 1888, Nevada County, Meadow Lake district: California State Mining Bureau Report 8, p. 454.Lindgren, W., 1897, Truckee folio, California: U.S. Geological Survey Atlas of the U.S., Folio 39, 8 p.Lindgren, W., 1900, Colfax folio, California: U.S. Geological Survey Atlas of the U.S., Folio 66, 10 p.Logan, C.A., 1924, Nevada County, Meadow Lake district: California State Mining Bureau Report 20, p. 355-362.MacBoyle, E., 1919, Nevada County, Meadow Lake district, Excelsior Mine: California State Mining Bureau Report 16, p. 33-37, 168.Wisker, A. L., 1936, The gold-bearing veins of the Meadow Lake district, Nevada County: California Journal of Geology, v. 32, p. 189-204.Additional information on the Meadow Lake District is contained in File No. 331-9362 (CGS Mineral Resources Files, Sacramento)