Commodities
PrimaryChromium
TertiaryRhodium, Ruthenium, Palladium, Platinum, Iridium
Commodity typeM
Deposit
Model15: Podiform chromite (minor)
Deposit sizeS
WorkingsSurface/Underground
Orebody formLENSES
Ore controlMagmatic Segregation
Materials
Ore mineralsChromite
GangueOlivine
Geology
Host rockDunite
Associated rockPeridotite · Coast Range Ophiolite
StructureVertical Shear Striking Northeast Can Be Traced For 1,500 Ft
Tectonic settingCalifornia Coast Ranges
Economic & production
Development statusPast Producer
Identification
Deposit ID10031629
MRDS IDM010725
Alternate namesMarshall and Vanderbilt Claims
RegionNA
Data scoreB
Coordinates38.79738, -122.34495
References
DOW, D.H., AND THAYER, T.P., 1946, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 134, PT. 2, CH. 1, P. 21-22.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.