Mine detail: Letha Lee Prospect

Previously called ''

<< Back to the map

Location

Lat / long:

38.26862, -105.54891

Resource(B)

Primary:	Niobium (Columbium), REE
Secondary:	Vermiculite
Ore:	Ancylite, Monazite
Gangue:	Barite, Calcite, Strontianite

Production

Operation type:	Surface
Production size:	None
Development status:	Occurrence

Geology

Host type:	Pyroxenite
Associated rock:	Pyroxenite Of The Gem Park Complex;Carbonatite Of The Gem Park Complex
Associated type:	Pyroxenite
Structure:	Central Cordillera (Southern Rocky Mountains), Gem Park Complex
Tectonic:	Wet Mountains
Alteration processes:	Fenitization

References

MRDS	D009704
DEP	10094586
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 PROF. 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.