Commodities
PrimaryCopper
Commodity typeM
Deposit
Deposit typeReplacement
Deposit sizeS
WorkingsSurface/Underground
Orebody formLENTICULAR
Ore controlZone Of Chloritization Along Calaveras Fault
Materials
Ore mineralsChalcopyrite, Cuprite, Malachite, Pyrite
GangueCalcite, Feldspar, Quartz
Geology
Host rockMetavolcanic Rock
Associated rockDiorite,Gabbro,Hornblendite
Structure"Calaveras Fault"; High Angle East-Dipping Fault, Traced Along Strike Over 2,000 Ft., Zone Of Chloritization Has Followed The Fault. The Fault Is Located On Eastern Boundary Of A Elongate Serpentine Body, 150 Ft. Sw. Of Empire Shaft Collar.
AlterationChloritization
Economic & production
Development statusPast Producer
Production years1861 - 1866 , 1867
Identification
Deposit ID10028777
MRDS IDM005967
RegionNA
Data scoreB
Coordinates37.97741, -120.63573
References
CLARK, W.B., AND LYDON, P.A., 1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIFORNIA; COUNTY REPT. 2 ; CALIF. DIV. MINES AND GEOLOGY, P. 25HEYL, G.R., 1948 , ORE DEPOSITS OF COPPEROPOLIS, CALAVERAS COUNTY, CALIFORNIA; COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 108 - 109 .HEYL, G.R., 1948 , P. 96 (SEE REF)