Mine detail: French Hill Chrome Mine

Previously called 'TysonJ. & W.'

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Location

Lat / long: 41.80649, -123.98699

Resource(M)

Primary: Chromium
Tertiary: Platinum, Palladium, Iridium, Ruthenium, Rhodium
Ore: Chromite
Gangue: Aragonite, Magnesite, Magnetite, Talc, Uvarovite
Orebody form: PODS, LENSES OF MASSIVE ORE, SOME DISSEMINATED
Discovery year: 1886

Production

Operation type: Unknown
Production size: Small
Development status: Past Producer
First production started: 1886
Last production ended: 1958

Geology

Host type:Dunite
Associated rock:Josephine Ophiolite
Associated type:Peridotite
Structure:Dunite Is Highly Sheared, Main Fault Strikes N20-70e And Dips 25-70se
Tectonic:Klamath Mountains Accreted Terrane
Alteration processes:Serpentinized Dunite

References

MRDSM700422
DEP10048022
Reference{Deposit:: 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.}{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:: STINSON, M.C., 1975, CALIFORNIA DIVISION OF MINES AND GEOLOGY MINERAL PROPERTY REPORT, UNPUB.}{Deposit:: 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.}{Deposit:: *RIEN, J.C., 1948, CURRENT AND RECENT MINING ACTIVITIES IN THE REDDING DISTRICT: CALIFORNIA JOURNAL OF MINES AND GEOLOGY V. 44, NO. 4, P. 337.}{Deposit:: *RIEN, 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.}{Deposit:: 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.}{Production:: STINSON, 1975}
ReporterPeterson, Jocelyn A., Oster, Karel L. (Albers, John P.)