Meyers Ranch

Region West, Rocky Mountains
Mineral systems
Deposit types
Critical minerals
Other minerals

Information leading to the delineation of this focus area

Basis for focus area MRDS producer and past producers.
Identified resources Estimated reserves of beryllium (beryl), feldspar, muscovite, and niobium (columbite). Historical production of beryllium (beryl), feldspar, scrap mica, and niobium-tantalum (columbite-tantalite).
Production Production during the 1930s included 200 tons of feldspar, 150 tons of scrap mica, 25 ton of beryl, and 1 ton columbite-tantalite.
Status Past mining.
Estimated resources Reserves are difficult to estimate as the percentages of muscovite, feldspar, beryl, and columbite varies and character at depth is unknown; an estimated 7,500 tons of rock contains about 1,900 tons muscovite, 38 to 150 tons of beryl, and 15 to 30 tons columbite (Hanley and others, 1950).
Geologic maps Temple and Busacca (2009), scale 1:24,000.
Geophysical data Inadequate Rank 5 aeromagnetic and Rank 3 aeroradiometric coverage.
Favorable rocks and structures The Meyers Ranch pegmatite intrudes fine- to coarse-grained red granite gneiss of Precambrian age.
Deposits Meyers Ranch (MRDS dep_id: 10013023).
Evidence from mineral occurrences MRDS.
Geochemical evidence No data.
Geophysical evidence No data.
Evidence from other sources No data.
Cover thickness and description Exposed at the surface; depth unknown.
Authors David A. Ponce, Nora K. Foley, Michael K. O'Keeffe.
New data needs 1:24,000 scale geologic mapping.
Geologic mapping and modeling needs 1:24,000 scale geologic mapping at the Thirtynine Mile Mountain quadrangle.
Geophysical survey and modeling needs High resolution, Rank 1 aeromagnetic and radiometric surveys.
Digital elevation data needs Lidar adequate.