Mine detail: Madonna No. 3 Mine

Previously called 'Madonna Western Mine'

<< Back to the map

Location

Lat / long:

39.3775, -105.19641

Resource(B)

Primary:	Feldspar, Quartz
Tertiary:	REE
Ore:	Allanite, Gadolinite, Quartz
Gangue:	Doverite, Fluorite, Monazite
Orebody form:	OVAL

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Last production ended:	1965

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)
Alteration processes:	Replacement Of Fluorite By Yttrofluorite And Graphic Granite By Fluorite

References

MRDS	D010167
DEP	10013720
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:: COLORADO DIV. MINES ANNUAL OPERATORS REPTS.}
Reporter	Schwochow, Stephen D., Spanski, Gregory T.