Mine detail: Shirley Group

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Location: Chaffee County, Colorado, United States, North America
Lat / long: 38.60806, -105.99365
dep_id: 10013770
mrds_id: D010240
Commodity type: metallic and nonmetallic
Major mineral: Beryllium, Niobium (Columbium), Tantalum, REE
Minor mineral: Feldspar, Mica
Operation type: Unknown
Production size: No production occurred
Development status: Occurrence
ore: Albite, Beryl, Microcline, Muscovite
gangue: Garnet, Orthoclase, Quartz
ore_ctrl: Pegmatite
Reporter: Collins, Donna B.
hrock_unit: Migmatitic Gneiss
hrock_type: Gneiss
Structure: Southern Mosquito Range, Arkansas Valley Graben
tectonic: Central Cordillera (Southern Rocky Mountains
References:
  • Deposit:: MEEVES, H.C., HARRER, C.M., SALSBURY, M.H., KONSELMAN, A.S., SHANNON, S.S., JR., 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: ARIZONA, COLORADO, NEW MEXICO, SOUTH DAKOTA, UTAH, AND WYOMING: USBM INFORMATION CIRCULAR 8298, P. 24
  • Deposit:: VAN ALSTINE, R.E., 1974, GEOLOGY AND MINERAL DEPOSITS OF THE PONCHA SPRINGS SE QUADRANGLE, CHAFFEE COUNTY, COLORADO: USGS PROFESSIONAL PAPER 829, 19 P.
  • Deposit:: BOARDMAN, S.J., 1976, GEOLOGY OF THE PRECAMBRIAN METAMORPHIC ROCKS OF THE SALIDA AREA, CHAFFEE COUNTY, COLORADO: THE MOUNTAIN GEOLOGIST, V. 13, NO. 3, P. 89-100.
  • Deposit:: BOARDMAN, S.J., 1971, PRECAMBRIAN GEOLOGY AND MINERAL DEPOSITS OF THE SALIDA AREA, CHAFFEE COUNTY, COLORDADO: PH. D. THESIS, UNIVERSITY OF MICHIGAN, 131 P.
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