Mine detail: Iron Hill Carbonatite

Previously called 'Powderhorn Carbonatite'

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Location

Lat / long:

38.25333, -107.07451

Resource(B)

Primary:	Platinum, Titanium, Metal, Niobium (Columbium), Thorium, Copper, Iron, Vermiculite, REE
Ore:	Apatite, Columbite, Magnetite, Perovskite, Pyrochlore, Sphene, Thorite, Vermiculite
Gangue:	Biotite, Garnet, Ilmenite, Monazite, Pyrite, Rutile, Siderite
Orebody form:	FUNNEL SHAPED, PEAR SHAPED IN PLAN VIEW, ORE DISSEMINATED IN PIPE

Production

Operation type:	Unknown
Production size:	Unknown
Development status:	Occurrence

Geology

Host type:	Nepheline Syenite,Pyroxenite,Intrusive Carbonatite
Associated rock:	Iron Hill Carbonatite
Associated type:	Granite
Structure:	Complex Near Southern Margin Of A North-Norhtwest Elongated Area 6 By 20 Mi Containing The Deposits, Concentric Structures Formed By Arcuate Shapes Of Different Rock Types, Cone Sheets Of Carbonatite; Radial Carbonate Dikes; Later Faults And Dikes.
Tectonic:	Rocky Mountains
Alteration processes:	Fenitization Of Country Rock

References

MRDS	M045346
DEP	10038072
Reference	{Deposit:: PAGE, N.J, 1972, U.S. GEOLOGICAL SURVEY, UNPUB. DATA}{Deposit:: NASH, W.P., 1972, MINERALOGY AND PETROLOGY OF THE IRON HILL CARBONATITE COMPLEXE, COLORADO: GEOLOGICAL SOCIETY OF AMERICA BULLETIN, V. 83, P. 1361-1382.}{Deposit:: TEMPLE, A.K., AND GROGAN, R.M., 1965, CARBONATITE AND RELATED ALKALIC ROCKS AT POWDERHORN, COLORADO: ECONOMIC GEOLOGY, V. 60, NO. 4, P. 672-692.}{Deposit:: LARSEN, E.S., 1942, ALKALIC ROCKS OF IRON HILL, GUNNISON COUNTY, COLORADO: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 197-A, P. 1-64.}
Reporter	Blair, Will N., Peterson, Jocelyn A.