Commodities
PrimaryGold
SecondaryPlatinum, Silver
Commodity typeM
Deposit
Deposit typeStream placer
Model119: Placer Au-PGE
Orebody formIrregular
Ore controlMechanical accumulation on irregular bedrock riffles and within river- and stream-channel lag gravels, bars, and point bar deposits
Materials
Ore mineralsGold, Magnetite, Ilmenite, Zircon, Pyrite, Amphibole, Epidote, Chlorite, Siderite
GangueQuartz
Geology
Host rockSand and Gravel
StructureWolf Creek Fault Zone, Ramshorn-Foresthill Fault, Melones Fault Zone
Tectonic settingMagmatic arc
Economic & production
Development statusPast Producer
Discovery year1850
Identification
Deposit ID10310674
RegionNA
Data scoreA
Coordinates39.28079, -120.91443
References
Clark, L. D., 1960, Foothills fault system, western Sierra Nevada, California: Geological Society of America Bulletin, v. 71, p. 483-496.Clark, W.B., 1970, Gold districts of California: California Division of Mines and Geology Bulletin 193, p. 114-115.Jarman, A, 1927, Hunts Hill, Quaker Hill, and Buckeye Hill: California State Mining Bureau report 23, p. 100-101.Lindgren, W., 1900, Colfax Folio: U.S. Geological Survey Atlas of the U.S., Folio 66, 10 p.Lindgren, W., 1911, Tertiary gravels of the Sierra Nevada: U.S. Geological Survey Professional Paper 73, p. 143-144.Saucedo, G. J. and Wagner, D. L., 1992, Geologic map of the Chico Quadrangle: California Division of Mines and Geology Regional Map Series Map No. 7A, scale 1:250,000.Yeend, W.E., 1974, Gold-bearing gravel of the ancestral Yuba River, Sierra Nevada, California: U.S. Geological Survey Professional Paper 772, 44 p.