Centennial Cone Prospect

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 Focus area based on inclusion of numerous MRDS past producers and producers.
Identified resources Historical production of beryllium (beryl), feldspar, and mica.
Production Unknown.
Status Past mining.
Estimated resources Unknown.
Geologic maps Bryant and others (1981), scale 1:250,000; Taylor (1975), scale 1:24,000; Sheridan and Marsh (1976), scale 1:24,000; Sheridan and others (1972), scale 1:24,000.
Geophysical data Inadequate Rank 5 aeromagnetic and Rank 3 aeroradiometric coverage. Rank 5 aeromagnetic coverage.
Favorable rocks and structures Pegmatite; Idaho Springs Formation (microcline-quartz-plagioclase-biotite gneiss).
Deposits Centennial Cone Prospect (MRDS dep_id: 10013731), Cressman Gulch, Grover, K.L. Green Ranch Pegmatite, Little Abner Pegmatite, Mt. Judge, Shaffer Hill.
Evidence from mineral occurrences MRDS.
Geochemical evidence Pegmatitic beryl and monazite (Hanley and others, 1950).
Geophysical evidence Unknown.
Evidence from other sources Unknown.
Comments Monazite-bearing pegmatite dikes that are mostly of interest for mineral collectors. Fluorite, Nb, Sc, and Ta inferred from the 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 Rank 1 aeromagnetic and aeroradiometric surveys.
Geologic mapping and modeling needs The entire area has been mapped at 1:24,000 scale (Black Hawk, Ralston Buttes, Golden, Squaw Pass, Evergreen, and Morrison quadrangles).
Geophysical survey and modeling needs High resolution, Rank 1 aeromagnetic and aeroradiometric surveys.
Digital elevation data needs Lidar in progress.