Commodities
PrimaryVermiculite
SecondaryNiobium (Columbium)
TertiaryThorium, REE
Commodity typeB
Deposit
Model27: Alkaline complexes
Deposit sizeS
WorkingsSurface
Ore controlCarbonatites, Faults, Fractures, Fenitization
Materials
Ore mineralsColumbite, Monazite, Perovskite, Pyrochlore, Thorianite, Vermiculite
Geology
Host rockGabbro,Pyroxenite
Associated rockGabbro,Pyroxenite,Lamprophyre · Pyroxenite, Gabbro Of The Gem Park Complex;Carbonatites Of The Gem Park Complex
StructureCentral Cordillera (Southern Rocky Mountains), Gem Park Complex
Tectonic settingWet Mountains
AlterationFenitization
Economic & production
Development statusPast Producer
Last production1945
Identification
Deposit ID10013422
MRDS IDD009705
RegionNA
Data scoreB
Coordinates38.26807, -105.54641
References
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.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