Mine detail: Estrella Mine

Previously called ''

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Location

Lat / long: 35.37803, -120.70264

Resource(M)

Primary: Chromium
Tertiary: Iridium, Platinum, Palladium, Ruthenium, Rhodium
Ore: Chromite
Gangue: Opal, Tremolite
Orebody form: NARROW HIGH-GRADE STRINGERS

Production

Operation type: Unknown
Production size: Small
Development status: Past Producer

Geology

Host type:Dunite
Associated rock:Coast Ranges Ophiolite
Associated type:Peridotite
Structure:Numerous Small Joints And Fissures
Tectonic:California Coast Ranges
Alteration processes:Dunite And Peridotite Now Mostly Serpentinite

References

MRDSM100460
DEP10043642
Reference{Deposit:: WALKER, G.W., AND GRIGGS, A.B., 1953, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 134, PT. 2, CH. 2, P. 82.}{Deposit:: CARLSON, C.A., AND OTHERS, 1985, ANALYSES FOR PLATINUM-GROUP ELEMENTS IN SAMPLES FROM PODIFORM CHROMITE DEPOSITS, CALIFORNIA AND OREGON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 85-442, 14 P.}{Deposit:: SMITH, C.T., AND GRIGGS, A.B., 1944, CHROMITE DEPOSITS NEAR SAN LUIS OBISPO, SAN LUIS OBISPO COUNTY, CALIFORNIA: U.S. GEOLOGICAL SURVEY BULLETIN 945-B, P. 36.}{Deposit:: ALLEN, J.E., 1941, GEOLOGICAL INVESTIGATION OF THE CHROMITE DEPOSITS OF CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY V. 37, NO. 1, P. 161.}
ReporterOster, Karel L. (Albers, John P.), Peterson, Jocelyn A.