Mine detail: Beardsley Deposit

Previously called 'Zabel-Beardsley Lease'

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Location

Lat / long:

38.12029, -105.32168

Resource(B)

Primary:	Thorium, REE
Secondary:	Barium-Barite
Ore:	Barite, Thorite
Gangue:	Fluorite, Galena, Limonite, Microcline, Pyrite, Quartz, Rutile
Discovery year:	1952

Production

Operation type:	Surface
Production size:	Small
Development status:	Past Producer

Geology

Host rock:	Hornblende-Plagioclase Gneiss And Alaskitic Granite Gneiss
Host type:	Gneiss
Associated rock:	Syenite
Associated type:	Syenite
Structure:	Wet Mountains, Nw-Trending Shear Zones
Tectonic:	Central Cordillera (Southern Rocky Mountains)

References

MRDS	D008927
DEP	10012913
Reference	{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}
Reporter	Collins, Donna B.