Commodities
PrimaryGold
SecondaryPlatinum, Silver
Commodity typeM
Deposit
Deposit typeStream placer
Model119: Placer Au-PGE
Orebody formIrregular
Materials
Ore mineralsGold
GangueQuartz, Magnetite, Ilmenite, Zircon, Garnet
Geology
Host rockGravel
StructureBear Mountains fault zone, Melones fault zone
Tectonic settingMagmatic arc
Economic & production
Development statusPast Producer
Discovery year1849
Identification
Deposit ID10310596
RegionNA
Data scoreB
Coordinates38.21319, -120.93432
References
Clark, W. B., 1955, San Joaquin County, Gold Hill dredges: California Journal of Mines and Geology, Vol. 51, no. 1, p. 37-39.Clark, W. B., 1970, Gold districts of California: California Divisions of Mines and Geology Bulletin 193, p. 33.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. 76-93.Logan, C.A., 1927, Calaveras County, American Dredging Compnay: California State Mining Bureau, 23nd Report of the State Mineralogist, p. 198.Winston, W.B., 1910, Gold Dredging in California, Calaveras County: California Mining Bureau Bulletin 57, p. 205-208.