Commodities
PrimaryGold
SecondaryPlatinum, Silver
Commodity typeM
Deposit
Deposit typeStream placer
Model119: Placer Au-PGE
Orebody formIrregular
Ore controlMechanical accumulation on irregular bedrock and in stream channel lag gravels, and bars
Materials
Ore mineralsGold
GangueQuartz, Magnetite, Ilmenite, Zircon, Pyrite, Amphibole, Epidote, Chlorite, Siderite
Geology
Host rockSand and Gravel
StructureBear Mountain Fault Zone
Tectonic settingMagmatic arc
Economic & production
Development statusPast Producer
Identification
Deposit ID10310638
RegionNA
Data scoreB
Coordinates38.90429, -121.26184
References
Clark, W.B., 1970, Gold districts of California: California Division of Mines and Geology Bulletin 193, p. 87.Lindgren, W., 1894, Sacramento folio, California: U.S. Geological Survey Atlas of the U.S., Folio 5, 3 p.Logan, C.A., 1936, Gold mines of Placer County: California Journal of Mines and Geology, v. 32, p. 80-83.