Mine detail: Friday Mine

Previously called ''

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Location

Lat / long: 33.03923, -116.56501

Resource(M)

Primary: Copper, Nickel, Cobalt
Tertiary: Palladium, Platinum, Iridium
Ore: Chalcopyrite, Magnetite, Pentlandite, Pyrite, Pyrrhotite
Orebody form: MASSIVE BODIES AND DISSEMINATED
Discovery year: 1885

Production

Operation type: Unknown
Production size: None
Development status: Occurrence

Geology

Host rock:San Marcos Gabbro (Cuyamaca Gabbro);
Host type:Schist
Associated rock:Stonewall Quartz Diorite
Associated type:Diorite
Tectonic:Basin And Range

References

MRDSW000377
DEP10067592
Reference{Deposit:: CREASEY, S.C., 1946, GEOLOGY AND NICKEL MINERALIZATION OF THE JULIAN-CUYAMACA AREA, SAN DIEGO COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 42, NO. 1, P. 15-29.}{Deposit:: CORNWALL, H.R., 1966, NICKEL DEPOSITS OF NORTH AMERICA: U.S. GEOLOGICAL SURVEY BULLETIN 1223, P. 40, MAP P. 10-11}{Deposit:: BILBREY, J.H., JR., 1962, COBALT, A MATERIALS SURVEY: U.S. BUREAU OF MINES INFORMATION CIRCULAR 8103, P. 28.}{Deposit:: MERRIAM, RICHARD, 1946, IGNEOUS AND METAMORPHIC ROCKS OF THE SOUTHWESTERN PART OF THE RAMONA QUADRANGLE, SAN DIEGO COUNTY, CALIFORNIA: GEOLOGICAL SOCIETY OF AMERICA BULLETIN, V. 57, P. 223-260.}{Deposit:: WEBER, F.H., JR., 1963, GEOLOGY AND MINERAL RESOURCES OF SAN DIEGO COUNTY, CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY COUNTY REPORT 3, P. 198-199.}{Deposit:: ERIC, J.H., 1948, TABULATION OF COPPER DEPOSITS OF CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY BULLETIN 144, P. 320.}{Deposit:: CHESTERMAN, C.W., 1976, WRITTEN COMMUNICATION}{Deposit:: PGE DATA FROM RETRIEVAL OF U.S. GEOLOGICAL SURVEY GEOCHEMICAL FILES}
ReporterCoury, Anny B., Killman, K. (Albers, J.), Peterson, Jocelyn A.