Commodities
PrimaryChromium
TertiaryRhodium, Ruthenium, Iridium, Palladium, Platinum
Commodity typeM
Deposit
Model15: Podiform chromite (minor)
Deposit sizeS
WorkingsSurface/Underground
Orebody formPODS, LENSES OF MASSIVE ORE, SOME DISSEMINATED
Ore controlMagmatic Segregation
Materials
Ore mineralsChromite
GangueAragonite, Magnesite, Magnetite, Talc, Uvarovite
Geology
Host rockDunite
Associated rockPeridotite · Josephine Ophiolite
StructureDunite Is Highly Sheared, Main Fault Strikes N20-70e And Dips 25-70se
Tectonic settingKlamath Mountains Accreted Terrane
AlterationSerpentinized Dunite
Economic & production
Development statusPast Producer
First production1886
Last production1958
Discovery year1886
Identification
Deposit ID10048022
MRDS IDM700422
Alternate namesTyson, J. & W.
RegionNA
Data scoreA
Coordinates41.80649, -123.98699
References
WELLS, F.G., CATER, F.W., JR., AND RYNEARSON, G.A., 1946, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 134, PT. 1, CH. 1, P. 47-52.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.STINSON, M.C., 1975, CALIFORNIA DIVISION OF MINES AND GEOLOGY MINERAL PROPERTY REPORT, UNPUB.SANBORN, W.C., AND RICKER, SPANGLER, 1948, INVESTIGATION OF FRENCH HILL CHROMITE MINE, DEL NORTE COUNTY, CALIF.: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 4365, 9 P.O'BRIEN, J.C., 1948, CURRENT AND RECENT MINING ACTIVITIES IN THE REDDING DISTRICT: CALIFORNIA JOURNAL OF MINES AND GEOLOGY V. 44, NO. 4, P. 337.O'BRIEN, J.C., 1952, MINES AND MINERAL RESOURCES OF DEL NORTE COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY V. 48, NO. 4, P. 271-272.BRADLEY, W.W., HUGUENIN, EMILE, LOGAN, C.A., TUCKER, W.B., AND WARING, C.A., 1918, MANGANESE AND CHROMIUM IN CALIFORNIA: CALIFORNIA STATE MINING BUREAU BULLETIN 76, P. 127-128.STINSON, 1975