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Minor podiform chromite deposit, 1 of 1 in Troup county (in Georgia)
Sections of this page: [Geologic] - [Economic] - [Reference]
Other names | Turner |
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Country | United States |
State or province | Georgia |
Geographic location: | 33°4'41"N,
84°54'53"W (-84.914722, 33.078056) |
Geographic context: | (click for info) |
Deposit type | minor podiform chromite |
Model type | Minor Podiform |
Deposit form | lenses |
Deposit texture | massive, disseminated, banded |
Ore type | Unknown |
Age of deposit | Ordovician |
Age (m.y.) | 460million years |
Area of deposit | 2787.7sq m |
Ore body length | 91.4m |
Ore body width | 30.5m |
Geophysical anomaly | magnetic |
Mineralogy | chromite olivine garnierite magnetite chlorite talc quartz |
Host rock type | dunite |
Host rock length | 152 |
Host rock width | 61 |
Paleotectonic setting | suprasubduction |
Ophiolite zone | tectonite |
Deposits < 10km | podiform chromite, placer chromite |
Rocks within 5km | dunite peridotite biotite gneiss pegmatites |
Geologic map unit | -84.9147222222222, 33.0780555555556 |
Nearby scientific data | Find additional scientific data near this location |
Discovery date | 1870s | |
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Startup date | 1929 | |
Mine depth | 16.8 | m |
Ore depth | 0 | m |
Fe % | 17.78 | percent |
Si2O2 % | 9.66 | percent |
Comments | Produced in 1929: 18 t of float ore of 33.76% Cr2O3, 9.66% SiO2, 17.78% FeO (Ballard, 1948). This ore was rejected as metallurgical ore because of the low grade and high iron content. Two lenses in place. Larger one is 24.4 m long, 10.7 m wide, 0.61 m thick. Smaller lens is 9 m east and 13.7 m below the surface, 0.3 m thick. No dimensions given on the smaller body. Based on the larger deposit dimensions, 560 t of chromite is estimated. Sample analyses found up to 51% Cr2O3, 15.3% Fe, 0.4% Ni; no Pt detected. Considerable lateritic and placer chromite deposits nearby. Troup County. |
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References | Ballard, T.J., 1948, Investigation of Louise chromite deposits, Troup County, GA: U.S. Bureau of Mines Report of Investigations R.I. 4311, 24 p. Vincent, H.R., McConnell, K.I., and Perley, P.C., 1990, Geology of selected mafic and ultramafic rocks of Georgia--A review: Georgia Geological Survey Information Circular 82, 59 p. |