Commodities
PrimaryGold
SecondaryPlatinum
TertiaryMercury
Commodity typeM
Deposit
Deposit typeStream Placer
Model119: Placer Au-PGE
Deposit sizeS
WorkingsSurface/Underground
Orebody formSTREAM SEDIMENT DEPOSITS
Ore controlStream Hydraulics
Materials
Ore mineralsCinnabar, Gold
Geology
Host rockGravel · Franciscan Formation
Tectonic settingCalifornia Coast Ranges
Economic & production
Development statusProducer
Production years1883, 1924
Identification
Deposit ID10038056
MRDS IDM045326
Alternate namesHopland
RegionNA
Data scoreB
Coordinates38.96376, -123.06775
References
O'BRIEN, J.C., 1953, MINES AND MINERAL RESOURCES OF MENDOCINO COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 49, NO. 4, P. 367.LAIZURE, C.MCK., 1924, MENDOCINO COUNTY: CALIFORNIA STATE MINING BUREAU, 20TH REPORT OF THE STATE MINERALOGIST, P. 87.LOGAN, C.A., 1919, PLATINUM AND ALLIED METALS IN CALIFORNIA: CALIFORNIA STATE MINING BUREAU BULLETIN 85, P. 44.