Mine detail: G.W. and Antrim Claims

Previously called 'Antrim ClaimsG.W. Lode Claims'

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Location

Lat / long:

38.15195, -105.32279

Resource(M)

Primary:	Thorium
Secondary:	Lead
Tertiary:	Niobium (Columbium), Gold, Silver, Uranium
Ore:	Thorite
Gangue:	Barite, Calcite, Chalcopyrite, Galena, Hematite
Orebody form:	fissure vein
Discovery year:	1954

Production

Operation type:	Underground
Production size:	None
Development status:	Past Producer

Geology

Host rock:	Alaskitic Granite Gneiss
Host type:	Gneiss
Associated rock:	Intrusive Rhyolite Porphyry
Associated type:	Rhyolite
Structure:	Wet Mountains, Stock On East-West Valley Which Is Possibly A Shear Zone; A Dike Crosses The Valley, Trending Nw; The Stock Is Probably At The Junction Of Two Faults; The Stock Is 1100 Ft X 400 Ft, Elongated To The Northeast; The Rhyolite Porphyry Dike Lies At The Southeast End Of The Stock, Striking Se, With A Length Of 1600 Ft And Width Of 7 Ft
Tectonic:	Central Cordillera (Southern Rocky Mountains)
Alteration processes:	Alteration At Contact Between Stock And Gneiss

References

MRDS	D008251
DEP	10094480
Reference	{Deposit:: NELSON-MOORE, J.L., COLLINS, D.B. AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: COLORADO GEOLOGICAL SURVEY BULLETIN 40, P. 121}{Deposit:: CHRISTMAN, R.A., BROCK, M.R., PEARSON, R.C.AND SINGEWALD, Q.D., 1959, GEOLOGY AND THORIUM DEPOSITS OF THE WET MOUNTAINS, COLORADO; A PROGRESS REPORT: USGS BULLETIN 1072-H, P. 528}{Deposit:: BROCK, M.R. AND SINGEWALD, Q.D., 1968, GEOLOGIC MAP OF THE MOUNT TYNDALL QUADRANGLE, CUSTER COUNTY, COLORADO: USGS MAP GQ-596, 1: 24, 000}
Reporter	Collins, Donna B.