South Central Kentucky and North Central Tennessee Mineral District

Region Central, South Central
Mineral systems
Deposit types
Critical minerals
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Polygon for Kentucky determined by known occurrences shown on Kentucky Geological Survey Minerals Map. Polygon around mining district in Tennessee defined as the Central Tennessee Zinc District (MRDS dep_id: 10307223).
Identified resources Identified resources of germanium and zinc. Historical production of zinc, with cadmium and germanium as byproducts.
Production 10 Mst zinc ore produced from 1975 to 1985; additional proprietary data.
Status Past mining in Kentucky; past and current mining in Tennessee.
Estimated resources In 1985 the Central Tennessee district was expected to produce over 500 Mst of ore containing about 3% Zn. (Briskey and others, 1986). Estimated reserves at the Gordonsville-Elmwood mine (Tennessee) in 1966 was 20.9 Mst or ore with grades of 3.2% Zn and 0.0002% Ge.
Geologic maps Clark and others (1993), scale 1:500,000; Hardeman and others (1966), scale 1:250,000. All of the 7.5 minute (scale 1:24,000) geologic quadrangles maps in Kentucky and Tennessee have been completed for this area.
Geophysical data Inadequate aeromagnetic and aeroradiometric coverage.
Favorable rocks and structures Ordovician Mascot Dolomite (Knox Group).
Deposits Burkesville district (Kentucky): Fountain Run (MRDS dep_id: 10218493); Central Tennessee Zinc district; (MRDS dep_id: 10307223), Gordonsville-Elmwood (MRDS dep_id: 10251007), Clinch Valley (MRDS dep_id: 10232548), Cumberland mine (Carthage) (MRDS dep_id: 10300051), Gainsville, Roaring River.
Evidence from mineral occurrences MRDS.
Geochemical evidence Documented mineralization (sphalerite, galena, barite, fluorite); barium in sols in Rutherford and Wilson counties (Tennessee).
Geophysical evidence None or proprietary.
Evidence from other sources Geologic mapping and exploration drilling.
Comments Mining at Burkesville was abandoned due to hydrogen sulfide gas and low ore grades.
Cover thickness and description Deposits are about 2000 feet in depth. Surface mineralization is associated with vein deposits.
Authors Georgina Lukoczki, Peter J. Lemiszki, William M. Andrews, Nora K. Foley, Bernard Hubbard.
New data needs Geophysical data, geochemical analyses, geologic mapping.
Geologic mapping and modeling needs Geologic mapping adequate, could be improved with high resolution geophysical coverage.
Geophysical survey and modeling needs High resolution geophysical coverage.
Digital elevation data needs Lidar adequate.