Mine detail: Franklin Mine

Previously called 'Frankland MineFrancklyn Mine'

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Location

Lat / long: 38.17445, -105.23113

Resource(M)

Primary: Thorium, REE
Secondary: Lead, Copper
Ore: Bornite, Galena, Thorite
Gangue: Barite, Calcite, Clay, Hematite, Limonite, Quartz, Siderite
Orebody form: TABULAR

Production

Operation type: Surface-Underground
Production size: Small
Development status: Past Producer

Geology

Host rock:Migmatitic Gneiss
Host type:Gneiss
Structure:Wet Mountains, Northwest-Trending Faults , Ilse Fault
Tectonic:Central Cordillera (Southern Rocky Mountains)
Alteration processes:Argillization

References

MRDSD008264
DEP10012578
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 BULL. 1072-H, P.531}{Deposit:: SCOTT, G.R., TAYLOR, R.B., EPIS, R.C. AND WOBUS, R.A., 1978, GEOLOGIC MAP OF THE PUEBLO 10X20 QUADRANGLE, SOUTH-CENTRAL COLORADO: USGS MAPI-1022, SCALE 1: 250, 000}{Deposit:: HUNTER, J.F., 1915, SOME CERUSSITE DEPOSITS IN CUSTER COUNTY, COLORADO, IN CONTRIBUTIONS TO ECONOMIC GEOLOGY: USGS BULLETIN 580, P. 25-37.}
ReporterCollins, Donna B.