| Basis for focus area |
The focus area is the mineralized contact between Cretaceous intrusive rock and Precambrian to Devonian metasedimentary rocks, and encompasses multiple U showings along this contact (Jensen and Herrmann, 2012). The Apex and Rundberg mines along this contact produced a small amount of Ag and U, and was extensively explored by Exxon and Uranerz. |
| Identified resources |
Historical production of uranium. |
| Production |
North Toiyabe Range AEC ore production area was about 114,000 lbs U3O8 from 1954 to 1964 (Pool, 2017). |
| Status |
Past mining. |
| Estimated resources |
Unknown. |
| Geologic maps |
Stewart and Carlson (1978), scale 1:500,000; Stewart and McKee (1968), scale 1:65,500. |
| Geophysical data |
Inadequate aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Contact between Cretaceous intrusive rock (Austin pluton) and metasedimentary rocks (Veatch quartzite). |
| Deposits |
Rundberg (Apex) mine (MRDS dep_id: 10104008), Lowboy mine (MRDS dep_id: 10246840), Lowary mine (MRDS dep_id: 10043816), Red Bluff (Austin) (MRDS dep_id: 10043820), Diamond, Klarunde Lease, Tick Canyon Group (MRDS dep_id: 10103925). |
| Evidence from mineral occurrences |
MRDS; International Atomic Energy Agency (2020b); U.S. Environmental Protection Agency (2006). |
| Geochemical evidence |
No data. |
| Geophysical evidence |
Unknown. |
| Evidence from other sources |
Historical exploration by Exxon and Uranerz, more recent exploration (circa 2009) by Monaro Mining NL. |
| Cover thickness and description |
Known mineralization between 20 and 75 m below the surface. |
| Authors |
Susan Hall. |
| New data needs |
Geologic mapping, geophysics, geochemistry. |
| 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. |
