Mine detail: Pine Ridge Pegmatite

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Location: Fremont County, Colorado, United States, North America
Lat / long: 38.48751, -105.6728
dep_id: 10013538
mrds_id: D009892
Commodity type: metallic and nonmetallic
Major mineral: Feldspar
Minor mineral: REE
Operation type: Unknown
Production size: No production occurred
Development status: Occurrence
ore: Fluorite, Gadolinite, Microcline
gangue: Biotite, Plagioclase, Quartz, Sericite
model: 32: Pegmatites
ore_ctrl: Pegmatite
Reporter: Collins, Donna B., Keller, John W.
hrock_unit: Migmatitic Gneiss
hrock_type: Diorite,Gneiss
arock_unit: Granodiorite
arock_type: Diorite
Structure: Northern Wet Mountains, Thirtynine Mile Volcanic Field, Cotopaxi And Texas Creek Faults
tectonic: Central Cordillera (Southern Rocky Mountains)
disc_yr: 1941
discr: Frank Ogden, Vallie, Co
References:
  • Deposit:: HEINRICH, E. W., 1948, FLUORITE-RARE EARTH MINERAL PEGMATITES OF CHAFFEE AND FREMONT COUNTIES, COLORADO: AMERICAN MINERALOGIST, V. 33, NOS. 1-2, P. 72
  • Deposit:: TAYLOR, R. B., SCOTT, G. R., WOBUS, R. A., EPIS, R. C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE COTOPAXI 15-MINUTE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-900, 1:62,500
  • Deposit:: Hanley, J.B., Heinrich, E.W., and Page, L.R., 1950, Pegmatite investigations in Colorado, Wyoming, and Utah 1942-1944, U.S.G.S. Professional Paper 227, 125 p.
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