Mine detail: Franklin Mine

Location:	Custer County, Colorado, United States, North America
Lat / long:	38.17445, -105.23113
dep_id:	10012578
mrds_id:	D008264
Commodity type:	metallic
Major mineral:	Thorium, REE
Minor mineral:	Lead, Copper
Operation type:	Surface-Underground
Production size:	Small ammount of material produced
Development status:	Past Producer
ore:	Bornite, Galena, Thorite
gangue:	Barite, Calcite, Clay, Hematite, Limonite, Quartz, Siderite
orebody_fm:	TABULAR
work_type:	Surface/Underground
model:	30: Thorium-rare-earth veins
alteration:	Argillization
ore_ctrl:	Mineralized Veins;
Reporter:	Collins, Donna B.
hrock_unit:	Migmatitic Gneiss
hrock_type:	Gneiss
Structure:	Wet Mountains, Northwest-Trending Faults , Ilse Fault
tectonic:	Central Cordillera (Southern Rocky Mountains)
References:	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.