Climax Mica Lode, Lower South Mine, Rose Dawn Mine, Star Girl Mine, Upper South Mine

Region West, Rocky Mountains
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

Basis for focus area MRDS producer and past producers.
Identified resources Identified feldspar and mica resources. Historical production of feldspar and mica.
Production Many tons of crude mica and a few tons of potash feldspar were recovered from the Rose Dawn mine.
Status Past mining.
Estimated resources Estimated to be only a few 100 tons each of scrap mica and microcline as reserves at the Star Girl mine.
Geologic maps Wobus and others (1979), scale 1:62,500.
Geophysical data Inadequate Rank 2 aeromagnetic coverage over 50% of focus area and Rank 5 over remainder; Rank 3 aeroradiometric coverage.
Favorable rocks and structures Pegmatite.
Deposits Climax Mica Lode, Lower South mine (MRDS dep_id: 10013523), Rose Dawn mine (MRDS dep_id: 10013527), Star Girl mine, Upper South mine.
Evidence from mineral occurrences MRDS.
Geochemical evidence Beryl is reported as a secondary or tertiary mineral in some of the feldspar-mica mines.
Geophysical evidence No data.
Evidence from other sources No data.
Comments Pegmatites were mined mostly for feldspar and mica, with minor beryl. Niobium, Sc, and Ta inferred from mineral system/deposit type table (Hofstra and Kreiner, 2020).
Cover thickness and description No cover.
Authors David A. Ponce, Nora K. Foley, Michael K. O'Keeffe, Joshua M. Rosera.
New data needs 1:24,000 scale geologic mapping.
Geologic mapping and modeling needs 1:24,000 scale geologic mapping at Thirtyone Mile Mountain and the Cover Mountain quadrangles.
Geophysical survey and modeling needs High resolution, Rank 1 aeromagnetic and aeroradiometric surveys, although this may not work well with this deposit type.
Digital elevation data needs Lidar adequate.