| Basis for focus area |
Alkaline/peralkaline igneous rocks; mining district outlines from McLemore (2017). |
| Identified resources |
Identified REE resource; historical production of barite and fluorite. |
| Production |
REE as bastnaesite recovered during processing for fluorite, also minor barite production. Approximately 1,000 tons fluorite produced at Red Cloud. The total fluorite production from the district was 2,400 tons (McAnulty, 1978). |
| Status |
Past mining and exploration (drilling), active claims. |
| Estimated resources |
537,000 short tons of 2.95% total REE (not NI 43-101 compliant; Schreiner, 1993). |
| Geologic maps |
Kelley (1972), scale 1:250,000; Perhac (1970), various scales. |
| Geophysical data |
Inadequate aeromagnetic and radiometric coverage. |
| Favorable rocks and structures |
Veins filling fissures and breccia zones in Permian Yeso Formation and Tertiary trachyte porphyry and syenodiorite. Stratabound sedimentary-copper deposits in Permian Yeso Formation. iron skarn deposits in Permian sedimentary rocks adjacent to Tertiary intrusions. |
| Deposits |
All American Prospect (MRDS dep_id: 10150332), Conqueror mine (MRDS dep_id: 10101830), Red Cloud (MRDS dep_id: 10150086). |
| Evidence from mineral occurrences |
MRDS. |
| Geochemical evidence |
Grab samples from the Conqueror fluorite mine have 18% fluorite, up to 8% total REE, and 6.2% barite (McLemore, 2010c; McLemore and others, 2021). |
| Geophysical evidence |
Aeromagnetic and gravity data needed. |
| Evidence from other sources |
New Mexico Mining and Minerals Division mine permits. |
| Comments |
Current USGS funding for mapping. |
| Cover thickness and description |
Unknown. |
| Authors |
Virginia T. McLemore, Joshua M. Rosera. |
| New data needs |
Mapping completed. |
| Geologic mapping and modeling needs |
Current mapping (McLemore and others, 2021). |
| Geophysical survey and modeling needs |
High resolution geophysical coverage needed (geophysical survey request completed). |
| Digital elevation data needs |
Lidar in progress. |
