Gallinas Mountains Mining District

Region West, Southwest
Mineral systems
Deposit types
Critical minerals
Other minerals

Information leading to the delineation of this focus area

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.