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Minor podiform chromite deposit, 1 of 69 in Josephine county (in Oregon)

Sections of this page: [Geologic] - [Economic] - [Reference]

Geologic Information
Other namesHot Dog Claim, Jack Shade, Black Princes
CountryUnited States
State or provinceOregon
Geographic location:42°20'1"N, 123°45'37"W
(-123.760278, 42.333611)
Geographic context: (click for info)
Deposit typeminor podiform chromite
Model typeMinor Podiform
Deposit formirregular patches, bands, seams, stringers
Deposit texturemassive
Ore typeMetallurgical
Age of depositMiddle Jurassic (164-162 Ma)
Age (m.y.)163million years
Area of deposit304.85sq m
Ore body length33.5m
Ore body width9.1m
Host rock typeserpentinized dunite
Host rock length18000
Host rock width6300
Paleotectonic settingsuprasubduction
Ophiolite zonetectonite
Deposits < 10kmpodiform chromite, low-sulfide gold veins, volcanogenic Hg, placer gold, silica-carbonate Hg, mafic volcanogenic massive sulfide, magmatic Ni-Co-Cu
Rocks within 5kmdunite
hornblende diorite
metavolcanic rocks
amphibole gneiss
Geologic map unit-123.760277777778, 42.3336111111111
Nearby scientific dataFind additional scientific data near this location
Economic Information
Tonnage0.000356million metric tons
Mine depth7.6m
Ore depth0m
Cr2O3 grade47.5percent
Fe %11.05percent
Cr:Fe ratio2.94
Reference information
CommentsProduction to 1958. Josephine County.
Ramp, Len, 1961, Chromite in southwestern Oregon: Oregon Department of Geology and Mineral Industries Bulletin 52, 169 p.
Ramp, Len, and Peterson, N.V., 1979, Geology and mineral resources of Josephine County, Oregon: Oregon Department of Geology and Mineral Industries Bulletin 100, 45 p. and geologic map, scale 1:500,000.
Evans, J.G., 1984, Structure of part of the Josephine Peridotite, northwestern California and southwestern Oregon: U.S. Geological Survey Bulletin 1546-A, p. 7-37.
Harper, G.D., Saleeby, J.B., and Heizler, M., 1994, Formation and emplacement of the Josephine ophiolite and the Nevadan orogeny in the Klamath Mountains, California-Oregon--U/Pb zircon and 40Ar/39Ar geochronology: Journal of Geophysical Research, v. 99, B3, p. 4293-4321.
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