| Basis for focus area |
Barton (2000); Foley, Jaskula, Piatak and Schulte (2017). |
| Identified resources |
Minor historical production of gold, lead, silver, and tungsten. |
| Production |
Unknown quantity; minor past production (Barton 2000; MRDS). |
| Status |
Past mining. |
| Estimated resources |
Unknown. |
| Geologic maps |
Nelson (1966), scale 1:62,500; Jennings and others (2010), scale 1:750,000. |
| Geophysical data |
Inadequate Rank 3 aeromagnetic and Rank 5 aeroradiometric coverage. |
| Favorable rocks and structures |
Late Proterozoic and Early Cambrian carbonate and clastic rocks; Birch Creek pluton and associated small W(-Be-F-Zn) skarns and Zn-Pb-Ag-Au veins. |
| Deposits |
Birch Creek area prospects (MRDS dep_id: 10212937). |
| Evidence from mineral occurrences |
MRDS. |
| Geochemical evidence |
Prospect pits that expose scheelite and fluorite veins in skarn around the Birch Creek pluton. |
| Geophysical evidence |
Unknown. |
| Evidence from other sources |
Unknown. |
| Cover thickness and description |
Deposits near surface and could extend at depth. Prospect pits that expose scheelite and fluorite veins in skarn around the Birch Creek pluton. |
| Authors |
David A. Ponce, Erica Key. |
| New data needs |
Updated geologic mapping, lidar, geochemistry, aeromagnetic and aeroradiometric surveys. |
| Geologic mapping and modeling needs |
Updated geologic mapping. |
| Geophysical survey and modeling needs |
High-resolution, Rank 1 aeromagnetic and aeroradiometric surveys. |
| Digital elevation data needs |
Lidar inadequate. |
