Mine detail: Oregon No. 3 Mine

Previously called 'Quartz Knob'

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Location

Lat / long:

39.39527, -105.22086

Resource(B)

Primary:	Quartz
Secondary:	REE
Tertiary:	Niobium (Columbium), Tantalum, Manganese, Thorium
Ore:	Quartz
Gangue:	Albite, Fergusonite, Fluorite, Pyrolusite, Thorite
Orebody form:	ELLIPTICAL

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Last production ended:	1968

Geology

Host rock:	Pegmatite;Pikes Peak Granite
Host type:	Pegmatite
Associated rock:	Pegmatite;Pikes Peak Granite
Associated type:	Pegmatite,Granite
Structure:	Front Range Uplift, Pikes Peak Batholith, Kennedy Gulch Fault Zone
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D010165
DEP	10013719
Reference	{Deposit:: SIMMONS, W.B., AND HEINRICH, E.W., 1980, RARE-EARTH PEGMATITES OF THE SOUTH PLATTE DISTRICT, COLORADO: CGS RESOURCE SER. 11, 131 P.}{Deposit:: PETERSON, W.L., 1964, GEOLOGY OF THE PLATTE CANYON QUADRANGLE, COLORADO: USGS BULL. 1181-C, 23 P., 1 PL.}{Deposit:: HAYNES, C. V., JR., 1965, GENESIS OF THE WHITE CLOUD AND RELATED PEGMATITES, SOUTH PLATTE AREA, JEFFERSON COUNTY, COLORADO: GSA BULL., V. 76, NO. 4, P. 441-462.}{Production:: COLORADO DIV. MINES ANN. OPERATORS REPTS.}
Reporter	Schwochow, Stephen D., Spanski, Gregory T.