Commodities
PrimaryChromium
TertiaryPlatinum, Rhodium, Palladium, Iridium, Ruthenium
Commodity typeM
Deposit
Model15: Podiform chromite (minor)
Deposit sizeS
WorkingsSurface/Underground
Orebody formPODS OF MASSIVE ORE, IRREGULAR STRINGERS, DISSEMINATED
Ore controlMagmatic Segregation
Materials
Ore mineralsChromite
GangueCalcite, Magnetite
Geology
Host rockDunite · Dutchman Peak Melange;Dutchman Peak Melange
StructureChromite Ore Bodies Are Highly Fractured
Tectonic settingKlamath Mountains Accreted Terrane
AlterationMalachite, Calcite, Chrome Chlorite On Fractures
Economic & production
Development statusProducer
Identification
Deposit ID10109711
MRDS IDM061619
RegionNA
Data scoreB
Coordinates42.0615, -122.83974
References
RAMP, LEN, 1961, CHROMITE IN SOUTHWESTERN OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 52, P. 89-90.THAYER, T.P., 1974, U.S. GEOLOGICAL SURVEY, UNPUB. DATAPAGE, N.J, JOHNSON, M.G., HAFFTY, JOSEPH, AND RAMP, LEN, 1975, OCCURRENCE OF PLATINUM GROUP METALS IN ULTRAMAFIC ROCKS OF THE MEDFORD-COOS BAY 2 DEGREE QUADRANGLE, SOUTHWESTERN OREGON: U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-694, SCALE 1:250,000.FERNS, M.L., 1979, PETROLOGY AND PETROGRAPHY OF THE WRANGLE GAP-RED MOUNTAIN ULTRAMAFIC BODY: EUGENE, UNIVERSITY OF OREGON, MS THESIS, 125 P.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.