Mine detail: Niles Mine

Previously called ''

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Location

Lat / long:

38.26001, -105.55475

Resource(B)

Primary:	Vermiculite
Tertiary:	REE
Ore:	Vermiculite
Orebody form:	PIPE

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Last production ended:	1945

Geology

Host type:	Gabbro
Associated rock:	Gabbro Of The Gem Park Complex;Dolomite-Barite-Monazite Carbonatite Dike Of The Gem Park Complex
Associated type:	Gabbro,Dolomite
Structure:	Central Cordillera (Southern Rocky Mountains), Gem Park Complex
Tectonic:	Wet Mountains

References

MRDS	D009706
DEP	10013423
Reference	{Deposit:: PARKER, R. L. AND SHARP, W. N., 1970, MAFIC-ULTRAMAFIC IGNEOUS ROCKS AND ASSOCIATED CARBONATITES OF THE GEM PARK COMPLEX, CUSTER AND FREMONT COUNTIES, COLORADO: USGS PROFESSIONAL PAPER 649, 24 P.}{Deposit:: TAYLOR, R. B., SCOTT, G. R., WOBUS, R. A. AND 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}
Reporter	Collins, Donna B.