Commodities
PrimaryCopper
SecondaryGold
TertiaryZinc
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formLENTICULAR
Ore controlFractures
Materials
Ore mineralsBornite, Chalcanthite, Chalcocite, Chalcopyrite, Copper, Epsomite, Hematite, Limonite, Pyrite, Sphalerite
Geology
Host rockRhyolite · Leona Rhyolite
StructureHayward Fault: Two Parallel Smaller Faults With Horizontal Displacement.
Economic & production
Development statusPast Producer
Production years1925 - 1929
Discovery year1891
Identification
Deposit ID10102589
MRDS IDM004762
Alternate namesLeona
RegionNA
Data scoreB
Coordinates37.79129, -122.17521
References
CLARK, C.W., 1917 : GEOLOGY AND ORE DEPOSITS OF LEONA RHYOLITE: UNIV. CALIF. PUB., BULL. OF DEPT. GEOLOGY, VOL. 10 , NO. 20 , PP 361 - 382DAVIS, F.F., 1950 ; MINES AND MINERAL RESOURCES ALAMEDA COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 46 , NO. 2 ; DIV. OF MINES, P. 305 - 307LAIZURE, C.V., 1929 ; SAN FRANCISCO FIELD DIV.; 25TH REPT. STATE MIN.; CALIF. DIV. OF MINES, P. 440 - 441ERIC, J.H., 1948