| Basis for focus area |
Cluster of MRDS records spatially associated with the Star Tungsten mine, a skarn deposit related to the Tertiary Harrison Pass pluton (I-type, reduced). |
| Identified resources |
Identified resources and historical production of tungsten. |
| Production |
Star Tungsten mine (1941, 1952-56, 1972); 11,659 units of WO3; 10,580 metric tons of ore at 1.0% WO3 (John and Bliss, 1994). |
| Status |
Past mining. |
| Estimated resources |
As of 1943, reserves at the Star Tungsten mine and adjacent Campbell property estimated at 8,000 tons containing 9,000 units of WO3 with potential to treat old tailings (Klepper and others, 1944). |
| Geologic maps |
Stewart and Carlson (1978), scale 1:500,000; Hope and Coats (1976), scale 1:100,000. |
| Geophysical data |
Inadequate Rank 5 aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Scheelite occurs in small bodies of tactite in a northerly trending contact zone between a quartz monzonite stock and beds of limestone metamorphosed to marble and hornfels. |
| Deposits |
Star Tungsten mine (MRDS dep_id: 10111431), Campbell 6 (MRDS dep_id: 10045671), Climax (MRDS dep_id: 10045672). |
| Evidence from mineral occurrences |
MRDS. |
| Geochemical evidence |
Unknown. |
| Geophysical evidence |
Unknown. |
| Evidence from other sources |
Unknown. |
| Comments |
Largest W producer in the Harrison Pass Mining District; associated with Eocene Harrison Pass Granite pluton at south end of the Ruby Mountains. Beryl occurs in the tactite bodies, in the granitic rocks immediately adjacent to them, and in pegmatites in and near the stock (Smith, 1976). |
| Cover thickness and description |
Exposed. |
| Authors |
David A. Ponce. |
| New data needs |
Geologic mapping, geophysics. |
| 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. |
