Mine detail: Lucky Girl Mine

Previously called ''

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Location

Lat / long:

37.40214, -121.42046

Resource(M)

Primary:	Chromium
Tertiary:	Platinum, Palladium, Iridium, Ruthenium, Rhodium
Ore:	Chromite
Gangue:	Olivine, Serpentine
Orebody form:	LENSES, PODS OF GRANULAR AND MASSIVE CHROMITE TO 2 FT THICK

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1918

Geology

Host rock:	Franciscan Formation
Host type:	Dunite
Associated rock:	Coast Range (Del Puerto) Ophiolite
Associated type:	Gabbro,Peridotite
Structure:	Shear Zone Trending N80e
Tectonic:	California Coast Ranges
Alteration processes:	Ultramafic Rocks Serpentinized

References

MRDS	M100179
DEP	10043424
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. 74, 76, 88.}{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.}
Reporter	Oster, Karel L. (Albers, John P.), Peterson, Jocelyn A.