Mine detail: Thornburg Mine

Previously called 'Los Ochos ClaimsLos Ochos Mine, Thornburg No. 1 Mine, T-1 Mine'

<< Back to the map

Location

Lat / long:

38.36944, -106.74701

Resource(M)

Primary:	Uranium
Ore:	Pitchblende, Uranophane, Zippeite
Gangue:	Barite, Chalcedony, Marcasite
Discovery year:	1954

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1954
Last production ended:	1962

Geology

Host rock:	Salt Wash Member of Morrison Formation
Host type:	Schist,Mudstone,Sandstone
Associated rock:	Quartz Monzonite Of Cochetopa Creek
Associated type:	Quartz Monzonite,Pegmatite
Structure:	San Juan Volcanic Field; Gunnison Uplift, Cochetopa Dome; Los Ochos Fault; Razor Creek Dome
Tectonic:	Central Cordillera (Southern Rocky Mtns); Colorado Platform
Alteration processes:	Kaolinitization, Sericitization, Chloritization, Hematite Staining

References

MRDS	D009285
DEP	10013146
Reference	{Deposit:: MALAN, R.C., AND RANSPOT, H.W., 1959, GEOLOGY OF THE URANIUM DEPOSITS IN THE COCHETOPA MINING DISTRICT, SAGUACHE AND GUNNISON COUNTIES, COLORADO: ECON. GEOLOGY, V. 54, NO. 1, P. 1-19.}{Deposit:: NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: COLORADO GEOLOGICAL SURVEY BULL. 40, P. 391-392}{Deposit:: OLSON, J.C., AND STEVEN, T.A., 1976, GEOLOGIC MAP OF THE RAZOR CREEK DOME QUADRANGLE, SAGUACHE COUNTY, COLORADO: USGS MAP MF-748}{Production:: COLO. DIV. MINES ANNUAL OPERATOR REPTS.}
Reporter	Schwochow, Stephen D.