Description
John E. Hamlin
Commodities
PrimaryChromium
TertiaryPalladium, Rhodium, Platinum, Iridium, Ruthenium
Commodity typeM
Deposit
Model15: Podiform chromite (minor)
Deposit sizeN
Orebody formLENS, PODS
Ore controlMagmatic Segregation
Materials
Ore mineralsChromite
GangueSerpentine
Geology
Host rockSerpentinite · Pearsoll Peak Ophiolite
Associated rockPlutonic Rock
StructureNortheast-Trending Shear Zone
Tectonic settingKlamath Mountains Accreted Terrane
AlterationSerpentinization
Economic & production
Development statusOccurrence
Identification
Deposit ID10042774
MRDS IDM060792
RegionNA
Data scoreC
Coordinates42.47093, -123.56422
References
RAMP, LEN, 1961, CHROMITE IN SOUTHWESTERN OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 52, P. 132.THAYER, T.P., 1974, U.S. GEOLOGICAL SURVEY, UNPUB. DATA.PAGE, 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.RAMP, LEN, AND PETERSON, N.V., 1979, GEOLOGY AND MINERAL RESOURCES OF JOSEPHINE COUNTY, OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 100, TABLE 1.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.RAMP, 1961, ESTIMATE OF 80 TONS; THAYER FILES INCOMPLETE