Mine detail: Beardsley Deposit

Location:	Custer County, Colorado, United States, North America
Lat / long:	38.12029, -105.32168
dep_id:	10012913
mrds_id:	D008927
Commodity type:	metallic and nonmetallic
Major mineral:	Thorium, REE
Minor mineral:	Barium-Barite
Operation type:	Surface
Production size:	Small ammount of material produced
Development status:	Past Producer
ore:	Barite, Thorite
gangue:	Fluorite, Galena, Limonite, Microcline, Pyrite, Quartz, Rutile
work_type:	Underground
model:	30: Thorium-rare-earth veins
ore_ctrl:	Mineralized Veins
Reporter:	Collins, Donna B.
hrock_unit:	Hornblende-Plagioclase Gneiss And Alaskitic Granite Gneiss
hrock_type:	Gneiss
arock_unit:	Syenite
arock_type:	Syenite
Structure:	Wet Mountains, Nw-Trending Shear Zones
tectonic:	Central Cordillera (Southern Rocky Mountains)
disc_yr:	1952
References:	Deposit:: STALTZ, M.H. AND OTHERS, 1979, PRINCIPAL, THORIUM RESOURCES IN THE UNITED STATES: USGS CIRCULAR 805, P. 12-13. Deposit:: DEL RIO, S.M., 1960, MINERAL RESOURCES OF COLORADO, FIRST SEQUEL: COLORADO MINERAL RESOURCES BOARD, P. 395 Deposit:: ARMBRUSTMACHER, T.J., 1976, THORIUM DEPOSITS IN THE WET MOUNTAINS AREA, FREMONT AND CUSTER COUNTIES, COLORADO: USGS OPEN-FILE REPORT 76-284, P. 4, 10-14 Deposit:: SCOTT, G.R., TAYLOR, R.B., EPIS, R.C. AND WOBUS, R.A., 1978, GEOLOGIC MAP OF THE PUEBLO 1 DEGREE X 2 DEGREES QUADRANGLE, SOUTH-CENTRAL COLORADO: USGS MAP I-1022, 1:250,000