| Basis for focus area |
Mining district outlines from McLemore (2017). |
| Identified resources |
Historical production of fluorite and tungsten. |
| Production |
Historical production of 4,150 lbs of 1% WO3; fluorite production was 3.230 tons (McLemore and others, 1996). |
| Status |
Past mining. |
| Estimated resources |
None. |
| Geologic maps |
Hedlund (1978c, d, e, f), scale 1:24,000. |
| Geophysical data |
Inadequate aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Fluorspar stringers and veins with gold filling faults and fissures in Proterozoic granite. Scheelite and wolframite occur scattered throughout narrow quartz veins in several deposits. |
| Deposits |
Fluorite: Grandview Fluorspar prospect (MRDS dep_id: 10013502), American Fluorspar deposits (MRDS dep_id: 10009964), Continental Fluorspar prospect (MRDS dep_id: 10010045); Tungsten: Hillside claims (MRDS dep_id: 10010036), Alpha mine (MRDS dep_id: 10010035). |
| Evidence from mineral occurrences |
MRDS. |
| Geochemical evidence |
Chip sample from American Fluorspar Deposit contained 47% fluorite and < 0.1% barite. |
| Geophysical evidence |
Unknown. |
| Evidence from other sources |
Anomalous fluorite in panned stream sediment (Richter and others, 1983). |
| Comments |
Only fluorite and W were produced from the Bound Ranch district. A few of the deposits were worked for Au, but the Au content was too low for continued mining (McLemore and others, 1996). |
| Cover thickness and description |
Variable. |
| Authors |
Virginia T. McLemore. |
| New data needs |
This area needs detailed 1:12,000 scale mapping, chemistry, alteration mapping. |
| Geologic mapping and modeling needs |
Area covered by 1:24,000 scale maps; detailed mapping needed. |
| Geophysical survey and modeling needs |
High resolution, Rank 1 aeromagnetic and aeroradiometric coverage. |
| Digital elevation data needs |
Lidar complete. |
