Mine detail: Iowa Hill District

Previously called ''

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Location

Lat / long: 39.10809, -120.86033

Resource(M)

Primary: Gold
Secondary: Platinum, Silver
Ore: Gold
Gangue: Quartz, Magnetite, Ilmenite, Zircon, Pyrite, Amphibole, Epidote, Chlorite, Siderite
Orebody form: Irregular
Discovery year: 1853

Production

Operation type: Surface-Underground
Deposit type: Stream placer
Development status: Past Producer

Geology

Host type:Sand and Gravel
Structure:Forest Hill Fault, Melones Fault Zone, Gills Hill Fault, Forest Hill Fault, Melones Fault Zone
Tectonic:Magmatic arc

References

DEP10310631
Reference{Deposit:: Chandra, D.K., 1961, Geology and mineral deposits of the Colfax and Foresthill quadrangles: California Division of Mines Special Report 67, 50 p.}{Deposit:: Clark, W.B., 1970, Gold districts of California: California Division of Mines and Geology Bulletin 193, p. 67-69.}{Deposit:: Hobson, J.B., 1890, Iowa Hill mining district: California State Mining Bureau report 10, p. 419-425.}{Deposit:: Jarman, A., 1927, Iowa Hill: California State Mining Bureau Report 23, p. 86-87.}{Deposit:: Irelan, W., Jr., 1888, Placer County: California State Mining Bureau Report 8.}{Deposit:: Lindgren, W., 1900, Colfax Folio: U.S. Geological Survey Atlas of the U.S., Folio 66, 10 p.}{Deposit:: Lindgren, W., 1911, Tertiary gravels of the Sierra Nevada: U.S. Geological Survey Professional Paper 73, p. 148-149.}{Deposit:: Logan, C.A., 1936, Gold mines of Placer County: Big Dipper, Morning Star and Succor Flat Channel mines: California Division of Mines Report 32, p. 52-54, 65-66, and 79.}{Deposit:: 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.}{Deposit:: Waring, C.A., 1919, Placer County: Iowa Hill District: California State Mining Bureau Report 16, p. 38.}
ReporterDowney, Cameron (Higgins, Chris, T.), Schruben, Paul G.