Mine detail: Twenty Grand Claim

Previously called ''

<< Back to the map

Location

Lat / long:

38.21084, -105.32918

Resource(M)

Primary:	Thorium, REE
Ore:	Thorite
Gangue:	Barite, Fluorite, Galena, Limonite, Pyrite, Quartz
Discovery year:	1952

Production

Operation type:	Surface-Underground
Production size:	None
Development status:	Prospect

Geology

Host rock:	Alaskitic Granite Gneiss
Host type:	Gneiss
Associated rock:	Andesite
Associated type:	Andesite
Structure:	Wet Mountains, Nw-Trending Shear Zones
Tectonic:	Central Cordillera (Southern Rocky Mountains)

References

MRDS	D008871
DEP	10087731
Reference	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.525-52
Reporter	Collins, Donna B.