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Louise

Minor podiform chromite deposit, 1 of 1 in Troup county (in Georgia)

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

Geologic Information

Other names	Turner
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

Economic Information

Discovery date	1870s
Startup date	1929
Mine depth	16.8	m
Ore depth	0	m
Fe %	17.78	percent
Si₂O₂ %	9.66	percent

Reference information

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.
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.

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.

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.

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