Mine detail: Esterley Chrome Mine

Previously called 'Esterly'

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Location

Lat / long: 42.07815, -123.63365

Resource(M)

Primary: Chromium
Tertiary: Iridium, Palladium, Ruthenium, Rhodium, Platinum
Ore: Chromite
Gangue: Magnesite, Olivine, Serpentine
Orebody form: IRREGULAR BODIES

Production

Operation type: Unknown
Production size: None
Development status: Past Producer

Geology

Host rock:Takilma Melange
Host type:Serpentinite
Associated rock:Takilma Melange
Associated type:Peridotite
Structure:Vertical Fault Trending N 30 E
Tectonic:Klamath Mountains Accreted Terrane
Alteration processes:Serpentine-Talc-Magnesite

References

MRDSM060675
DEP10042731
Reference{Deposit:: SHENON, P.J., 1933, GEOLOGY AND ORE DEPOSITS OF THE TAKILMA-WALDO DISTRICT, OREGON: U.S. GEOLOGICAL SURVEY BULLETIN 846-B, P. 177-178.}{Deposit:: THAYER, T.P., 1974, U.S. GEOLOGICAL SURVEY, UNPUB. DATA}{Deposit:: RAMP, LEN, 1961, CHROMITE IN SOUTHWESTERN OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 52, P. 150-151.}{Deposit:: 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.}{Deposit:: 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.}{Deposit:: 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.}{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.}{Reserve-Resource:: RAMP, 1961, P. 151}
ReporterJohnson, Maureen G., Ferns, Mark L. (Brooks, Howard C.), Peterson, Jocelyn A.