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Wait Property

Minor podiform chromite deposit, 4 of 5 in Amador county (in California)

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

Geologic Information
CountryUnited States
State or provinceCalifornia
Geographic location:38°26'1"N, 120°54'29"W
(-120.908056, 38.433611)
Geographic context: (click for info)
Deposit typeminor podiform chromite
Model typeMinor Podiform
Deposit formsmall pods, lenses
Ore typeUnknown
Age of depositPennsylvanian (311±3 m.y. 206Pb/238U)
Age (m.y.)311million years
Mineralogychromite
Host rock typeserpentine
Host rock length52000
Host rock width2000
Ophiolite zonetectonite
Deposits < 10kmpodiform chromite
Rocks within 5kmserpentine
basalt flow
basalt tuff
slate
graywacke
conglomerate
mudstone
quartzite
chert
gabbro
greenstone
andesite flow
andesite tuff
andesite breccia
rhyolite flow
rhyolite tuff
Geologic map unit-120.908055555556, 38.4336111111111
Nearby scientific dataFind additional scientific data near this location
Economic Information
Discovery date1916
Startup date1916
Tonnage7.1e-05million metric tons
Mine depth6m
Ore depth0m
Cr2O3 grade38percent
Reference information
CommentsLocation uncertain. Bear Mountain ophiolitic melange. Amador County.
References
Wagner, D.L., Jennings, C.W., Bedrossian, T.L., and Bortugno, E.J., 1981, Geologic map of the Sacramento quadrangle: California Division of Mines and Geology Regional Geologic Map Series Map no. 1A, scale 1:250,000.
Cater, F.W., Jr., 1948, Chromite deposits of Calaveras and Amador counties, California, in Geological investigations of chromite in California, Part 3--Sierra Nevada: California Division of Mines Bulletin 134, pt. 3, ch. 2, 60 p.
Saleeby, J.B., 1982, Polygenetic ophiolite belt of the California Sierra Nevada--Geochronological and tectonostratigraphic development: Journal of Geophysical Research, v. 87, no. B3, p. 1803-1824.
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