Colorado · Fremont County
Past Producer

Griffen Property

Fremont County, Colorado, United States
Barium-BariteLeadThoriumStoneCrushed/BrokenUraniumFluorine-FluoriteCopper
⌖ Show on mapUSGS source ↗
Commodities
PrimaryBarium-Barite, Lead, Thorium, Stone, Crushed/Broken
SecondaryUranium, Fluorine-Fluorite, Copper
Commodity typeB
Deposit
Model24: Carbonatite
Deposit sizeS
Ore controlMineralized Veins; 2 Veins 70 Feet Apart
Materials
Ore mineralsThorite
GangueChalcopyrite, Fluorite, Hematite, Limonite, Pyrite, Quartz, Siderite, Barite, Galena
Geology
Host rockGneiss · Hornblende-Plagioclase Gneiss And Alaskitic Granite Gneiss
Associated rockPlutonic Rock,Lamprophyre · Lamprophyre
StructureWet Mountains, Nw-Trending Shear Zones
Tectonic settingCentral Cordillera (Southern Rocky Mountains)
AlterationModerate Wallrock Silicification And Pyritization
Economic & production
Development statusPast Producer
Discovery year1951
Identification
Deposit ID10101768
MRDS IDD008929
Alternate namesA. Griffen Ranch
RegionNA
Data scoreB
Coordinates38.2939, -105.29307
References
CHRISTMAN, R.A., HEYMAN, A.M., DELLWIG, L.F, AND GOTT, G.B., 1953, THORIUM INVESTIGATIONS 1950-52, WET MOUNTAINS, COLORADO: USGS CIRCULAR 290, P. 22, 25.NELSON-MOORE, J.L., COLLINS, D.B. AND HORNBAKER, A.L., 1979, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULLETIN 40, P. 144TAYLOR, R.B., SCOTT, G.R., WOBUS, R.A., EPIS, R.C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE ROYAL GORGE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-869, 1:62,500