The Griffen Property is a barium-barite, lead, thorium, and stone, crushed/broken mine located in Fremont county, Colorado at an elevation of 7,999 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 7,999 Feet (2,438 Meters)
Commodity: Barium-Barite, Lead, Thorium, Stone, Crushed/Broken
Lat, Long: 38.29389, -105.29250
Map: View on Google Maps
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Griffen Property MRDS details
Site Name
Primary: Griffen Property
Secondary: A. Griffen Ranch
Commodity
Primary: Barium-Barite
Primary: Lead
Primary: Thorium
Primary: Stone, Crushed/Broken
Secondary: Copper
Secondary: Uranium
Secondary: Fluorine-Fluorite
Location
State: Colorado
County: Fremont
District: Wet Mountains Area
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Albert Griffen
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Surface
Discovery Year: 1951
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Model Name: Carbonatite
Orebody
Not available
Structure
Type: R
Description: Wet Mountains
Type: L
Description: Nw-Trending Shear Zones
Alterations
Alteration Type: L
Alteration: Silicification
Alteration Text: Moderate Wallrock Silicification And Pyritization
Alteration Type: L
Alteration: pyritization
Rocks
Name: Plutonic Rock
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Plutonic Rock
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: .005 TO .089% EQUIV. U, .001 TO .058% U, .02 TO .17% EQUIV. TH02,
Materials
Ore: Thorite
Gangue: Limonite
Gangue: Pyrite
Gangue: Siderite
Gangue: Hematite
Gangue: Chalcopyrite
Gangue: Fluorite
Gangue: Quartz
Gangue: Galena
Gangue: Barite
Comments
Comment (Workings): THREE SHALLOW PROSPECT PITS
Comment (Location): 1.1 MILES NORTH OF THE JUNCTION OF STATE ROUTES 143 AND 277 ; INFO FROM LAND.ST :1976
Comment (Geology): DEPOSITS SPATIALLY AND GENETICALLY RELATED TO CAMBRIAN ALKALIC COMPLEXES
References
Reference (Deposit): 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.
Reference (Deposit): NELSON-MOORE, J.L., COLLINS, D.B. AND HORNBAKER, A.L., 1979, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULLETIN 40, P. 144
Reference (Deposit): TAYLOR, 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
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
