Commodities
PrimaryChromium
TertiaryIridium, Palladium, Ruthenium, Rhodium, Platinum
Commodity typeM
Deposit
Model15: Podiform chromite (minor)
Deposit sizeN
WorkingsSurface
Orebody formIRREGULAR BODIES
Ore controlWhite Magnesite Lenses Used To Trace Chromite Ore
Materials
Ore mineralsChromite
GangueMagnesite, Olivine, Serpentine
Geology
Host rockSerpentinite · Takilma Melange
Associated rockPeridotite · Takilma Melange
StructureVertical Fault Trending N 30 E
Tectonic settingKlamath Mountains Accreted Terrane
AlterationSerpentine-Talc-Magnesite
Economic & production
Development statusPast Producer
Identification
Deposit ID10042731
MRDS IDM060675
Alternate namesEsterly
RegionNA
Data scoreA
Coordinates42.07815, -123.63365
References
SHENON, P.J., 1933, GEOLOGY AND ORE DEPOSITS OF THE TAKILMA-WALDO DISTRICT, OREGON: U.S. GEOLOGICAL SURVEY BULLETIN 846-B, P. 177-178.THAYER, T.P., 1974, U.S. GEOLOGICAL SURVEY, UNPUB. DATARAMP, LEN, 1961, CHROMITE IN SOUTHWESTERN OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 52, P. 150-151.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.OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES, 1952, OREGON METAL MINES HANDBOOK, SOUTHWESTERN OREGON--JOSEPHINE COUNTY (2D ED.): OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 14-C, V. 2, SEC. 1, P. 196-197.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, P. 151