Mine detail: Yard Mine

Location:	Chaffee County, Colorado, United States, North America
Lat / long:	38.8875, -106.08671
dep_id:	10013765
mrds_id:	D010231
Commodity type:	metallic and nonmetallic
Major mineral:	Feldspar
Minor mineral:	REE, Bismuth
Trace mineral:	Copper
Operation type:	Unknown
Production size:	Small ammount of material produced
Development status:	Past Producer
ore:	Bismutite, Euxenite, Fluorite, Gadolinite, Malachite, Microcline, Monazite
gangue:	Apatite, Biotite, Chlorite, Magnetite, Muscovite, Plagioclase, Quartz
work_type:	Surface
Reporter:	Collins, Donna B.
hrock_type:	Granite
arock_unit:	Granitic Rocks;Pegmatite
arock_type:	Pegmatite,Granite
Structure:	Mosquito Range, Arkansas Valley Graben, Fractures (Strike N 50 W); Nw-Trending Faults
tectonic:	Central Cordillera (Southern Rocky Mountains)
References:	Deposit:: HANLEY, J.B., HEINRICH, E.W., PAGE, L.R., 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-1944: USGS PROFESSIONAL PAPER 227, P. 21-22 Deposit:: HEINRICH, E.W., 1948, FLUORITE-RARE EARTH MINERAL PEGMATITES OF CHAFFEE AND FREMONT COUNTIES, COLORADO: AMERICAN MINERALOGIST, V. 33, NOS. 1-2, P. 64-69. Deposit:: ARGALL, G.O., JR., 1949, INDUSTRIAL MINERALS OF COLORADO: COLORADO SCHOOL OF MINES QUARTERLY, V. 44, NO. 2, P. 161 Deposit:: BRADY, B.T., 1975, MAP SHOWING FLUORSPAR DEPOSITS IN COLORADO: USGS MAP MR-70, 1:500,000, TEXT Production:: HANLEY, J.B. (1950)