| 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. |
