| Basis for focus area |
Polygon around MRDS mining district records. Most of the deposits are within 20 miles of the junction of DeKalb, Smith, and Wilson counties, but others are in Rutherford, Cannon, Williamson, Trousdale, and Putnam counties. |
| Identified resources |
Historical production of barite. |
| Production |
Unknown. |
| Status |
Past mining. |
| Estimated resources |
Unknown. |
| Geologic maps |
Horton and others (2017), scale 1:500,000. |
| Geophysical data |
Inadequate Rank 4 aeromagnetic and Rank 5 aeroradiometric coverage. |
| Favorable rocks and structures |
Residuum of Cambrian or Ordovician carbonate rocks. Most of the veins are in the Carters Limestone, but some veins also are in overlying and underlying limy rocks. Limestones are locally sandy, shaly, or dolomitic. Ore deposits of the district are associated with rocks of Early Cambrian age, including the Weisner, Shady, and Home Formations, listed in ascending order. |
| Deposits |
Cyprus Thompson Weinman mine (Cartersville Operation) (MRDS dep_id: 10168121). |
| Evidence from mineral occurrences |
MRDS. |
| Geochemical evidence |
Barium in soils. |
| Geophysical evidence |
Unknown. |
| Evidence from other sources |
Geologic mapping. |
| Comments |
Known producer but limited spatial extent. Benefit of geophysical surveys not known. |
| Cover thickness and description |
Unknown. |
| Authors |
Nora K. Foley, Bernard E. Hubbard. |
| New data needs |
Geophysical data, geologic mapping, and geochemical analyses. |
| Geologic mapping and modeling needs |
1:24:000 scale geologic mapping. |
| Geophysical survey and modeling needs |
High resolution aeromagnetic and radiometric coverage. |
| Digital elevation data needs |
Lidar in progress. |
