Mine detail: Yard Mine

Previously called 'Yard Pegmatite'

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Location

Lat / long:

38.8875, -106.08671

Resource(B)

Primary:	Feldspar
Secondary:	REE, Bismuth
Tertiary:	Copper
Ore:	Bismutite, Euxenite, Fluorite, Gadolinite, Malachite, Microcline, Monazite
Gangue:	Apatite, Biotite, Chlorite, Magnetite, Muscovite, Plagioclase, Quartz

Production

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

Geology

Host type:	Granite
Associated rock:	Granitic Rocks;Pegmatite
Associated type:	Pegmatite,Granite
Structure:	Mosquito Range, Arkansas Valley Graben, Fractures (Strike N 50 W); Nw-Trending Faults
Tectonic:	Central Cordillera (Southern Rocky Mountains)

References

MRDS	D010231
DEP	10013765
Reference	{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)}
Reporter	Collins, Donna B.