| Basis for focus area |
Outline of an area around an aeromagnetic anomaly on the reduced-to-pole aeromagnetic map of Nevada (Kucks and others, 2006), extended on the west to include the point location for the Butte Valley porphyry copper deposit (Singer and others, 2008). |
| Identified resources |
None. |
| Production |
None. |
| Status |
Active exploration. |
| Estimated resources |
Unknown. |
| Geologic maps |
Rowley and others (2017), scale 1:250,000. |
| Geophysical data |
Inadequate aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Alteration and hypogene and supergene copper mineralization is hosted in a buried felsic intrusion, known only from drill core. |
| Deposits |
None. |
| Evidence from mineral occurrences |
Tingley and Bentz (1983). |
| Geochemical evidence |
Alunite, chalcopyrite, goethite, hematite, magnetite, jarosite, kaolinite, molybdenite, and pyrite are reported in Singer and others (2008). |
| Geophysical evidence |
Butte Valley porphyry (under cover) was discovered by drilling a large magnetic anomaly. |
| Evidence from other sources |
Unknown. |
| Comments |
The sulfide system, which covers an area of at least two square miles, is totally blind and is buried below approximately 2,000 feet of gravels and a gravity slide block (Tingley and Bentz, 1983); 17 holes drilled in 1980s. There are multiple potential targets, include skarn. |
| Cover thickness and description |
Buried beneath 2,000 feet gravels and gravity slide block. |
| Authors |
Peter G. Vikre, Jane M. Hammarstrom. |
| 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 |
Buried resources; not needed. |
