Commodities
PrimaryCopper
SecondarySilver, Gold
Commodity typeM
Deposit
Deposit typeReplacement
Model184: Massive sulfide, kuroko
Deposit sizeS
WorkingsUnderground
Orebody formLENTICULAR
Ore control1. Zone Of Chloritization, 2. Fault
Materials
Ore mineralsChalcopyrite, Pyrite
GangueQuartz
Geology
Host rockSlate,Schist
Associated rockSerpentinite
StructureFault; East Dipping On Eastern Boundary Of Serpentine Body. Appears Continuous With "Footwall Fault" Of North Keystone Mine. Talcose Gouge With Disseminated Magnetite. Displacement Decreases Southward, 100 Ft. Displacement, Quartz Diorite Intrusion Near Stockton Road.
AlterationChloritization
Economic & production
Development statusProducer
Production years1861 - 1946
Identification
Deposit ID10028813
MRDS IDM006028
Alternate namesCalaveras Copper
RegionNA
Data scoreB
Coordinates37.9763, -120.64379
References
HEYL, G.R., 1948 , ORE DEPOSITS OF COPPEROPOLIS, CALAVERAS COUNTY, CALIFORNIA; COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 106 - 108 , P. 96 - 97 .EC. MINERAL MAP NO. 6HEYL, G.R., 1948 , P. 96 - 97 (SEE REF.)