Mine detail: Chrome Ridge

Previously called 'Sordy Group'

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Location

Lat / long:

42.43402, -123.72286

Resource(M)

Primary:	Chromium
Tertiary:	Palladium, Rhodium, Platinum

Production

Operation type:	Unknown
Deposit type:	MAGMATIC SEGREGATION
Production size:	Small
Development status:	Past Producer

Geology

Structure:	2 MAIN SETS OF FAULTS, ALSO CONSIDERABLE FOLDING
Alteration processes:	SERPENTINIZATION

References

MRDS	M061750
DEP	60001006
Reference	{Deposit:: THAYER, T.P., 1974, U.S. GEOLOGICAL SURVEY, UNPUB. DATA.}{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:: WELLS, F.G., PAGE, L.R., AND JAMES, H.L., 1941, CHROMITE DEPOSITS IN THE SOURDOUGH AREA, CURRY COUNTY, AND THE BRIGGS CREEK AREA, JOSEPHINE COUNTY, OREGON: U.S. GEOLOGICAL SURVEY BULLETIN 922-P, P. 477-496.}