| Basis for focus area |
Mining districts and mineral occurrences. |
| Identified resources |
Historical production of gold, silver, and tungsten. |
| Production |
Unknown. |
| Status |
Past mining. |
| Estimated resources |
Unknown. |
| Geologic maps |
Lund and others (1990), scale 1:250,000; Mitchell and Bennett (1979b), scale 1:250,000. |
| Geophysical data |
Inadequate aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Mineralized veins cutting the Idaho batholith and older metamorphic and plutonic rocks. Veins are generally close to the contact between granitic rocks and gneiss and schist. |
| Deposits |
Tungstar mine (MRDS dep_id: 10011568; USMIN Site_ID: CA00021), Little Giant mine (MRDS dep_id: 10071544), Marygold #1-#8 (MRDS dep_id: 10011567), Charity mine (MRDS dep_id: 10105743), Golden Anchor mine (MRDS dep_id: 10105738), Petsite mine (MRDS dep_id: 10071637). |
| Evidence from mineral occurrences |
MRDS; USMIN. |
| Geochemical evidence |
Unknown. |
| Geophysical evidence |
None. |
| Evidence from other sources |
Unknown. |
| Comments |
Mainly a gold district, both lode gold and placer. |
| Cover thickness and description |
Exposed at the surface. |
| Authors |
Virginia S. Gillerman, Reed S. Lewis, Christopher A. Tate. |
| New data needs |
Geologic mapping, geophysics, lidar. |
| Geologic mapping and modeling needs |
Partial mapping of one 1:24,000 scale quadrangle and reconnaissance mapping of 2.5 1:24:000 scale quadrangles to verify previous (intermediate scale) mapping. |
| Geophysical survey and modeling needs |
High resolution aeromagnetic and aeroradiometric survey. Gravity may be helpful, good road access for a state-led field survey. |
| Digital elevation data needs |
Lidar in progress only over southern portion of focus area; incomplete elsewhere. |
