Mine detail: French Hill Chrome Mine

Previously called 'TysonJ. & W.'

Location:	Del Norte County, California, United States, North America
Lat / long:	41.80649, -123.98699
dep_id:	10048022
mrds_id:	M700422
Commodity type:	metallic
Major mineral:	Chromium
Trace mineral:	Platinum, Palladium, Iridium, Ruthenium, Rhodium
Operation type:	Unknown
Production size:	Small ammount of material produced
Development status:	Past Producer
ore:	Chromite
gangue:	Aragonite, Magnesite, Magnetite, Talc, Uvarovite
orebody_fm:	PODS, LENSES OF MASSIVE ORE, SOME DISSEMINATED
work_type:	Surface/Underground
model:	15: Podiform chromite (minor)
alteration:	Serpentinized Dunite
conc_proc:	Magmatic Segregation
ore_ctrl:	Magmatic Segregation
Reporter:	Peterson, Jocelyn A., Oster, Karel L. (Albers, John P.)
hrock_type:	Dunite
arock_unit:	Josephine Ophiolite
arock_type:	Peridotite
Structure:	Dunite Is Highly Sheared, Main Fault Strikes N20-70e And Dips 25-70se
tectonic:	Klamath Mountains Accreted Terrane
Year first produced:	1886
yr_lst_prd:	1958
disc_yr:	1886
References:	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