Commodities
PrimaryCopper
SecondarySulfur
Commodity typeB
Deposit
Deposit sizeY
WorkingsUnderground
Orebody formLENTICULAR
Ore controlFractures
Materials
Ore mineralsBornite, Chalcocite, Chalcopyrite, Pyrite, Sphalerite
Geology
Host rockRhyolite
StructureHayward Fault: Two Parallel Smaller Faults With Horizontal Displacement.
Economic & production
Development statusPast Producer
Identification
Deposit ID10036253
MRDS IDM024332
RegionNA
Data scoreB
Coordinates37.80379, -122.17215
References
DAVIS, F.F., 1950: MINES AND MINERAL RESOURCES OF ALAMEDA COUNTY; CALIF. JOUR. MINES AND GEOLOGY, 001 46, NO.2 DIV OF MINES, P. 290.ERIC, J.H., 1948: COPPER IN CALIFORNIA BULL. 144: DIV. OF MINES, P-212LAIZURE, C.V., 1929: SAN FRANCISCO FIELD DIV.; 25TH REPT. STATE MIN.; CALIF DIV. OF MINES P. 440.