The Big Chief 1 Claim is a barium-barite and silver mine located in Custer county, Colorado at an elevation of 8,199 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: 8,199 Feet (2,499 Meters)
Commodity: Barium-Barite, Silver
Lat, Long: 38.24861, -105.26083
Map: View on Google Maps
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Big Chief 1 Claim MRDS details
Site Name
Primary: Big Chief 1 Claim
Secondary: Star Mine
Commodity
Primary: Barium-Barite
Primary: Silver
Secondary: Lead
Tertiary: Uranium
Tertiary: Copper
Tertiary: Thorium
Tertiary: REE
Location
State: Colorado
County: Custer
District: Wet Mountains Area
Land Status
Land ownership: National Forest
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
Type: Surface/Underground
Ownership
Owner Name: Jensen, A. P.
Home Office: Ilse Route, Canon City, Colorado
Years: 1953 -
Owner Name: Cotter Corp.
Years: 1960 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Year First Production: 1932
Year Last Production: 1932
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: Thorium-rare-earth veins
Orebody
Form: TABULAR
Structure
Type: R
Description: Wet Mountains
Type: L
Description: Ilse Fault
Alterations
Not available
Rocks
Name: Gneiss
Role: Host
Age Type: Host Rock Unit
Age Young: Paleoproterozoic
Name: Gneiss
Role: Host
Age Type: Host Rock
Age Young: Paleoproterozoic
Analytical Data
Analytical Data: .009% EQUIV. U, 0.002% U CHANNEL SAMPLE .04% EQUIV TH02
Materials
Ore: Galena
Ore: Thorite
Ore: Barite
Ore: Chalcopyrite
Gangue: Quartz
Gangue: Siderite
Comments
Comment (Workings): THERE ARE EXTENSIVE OLD BARITE WORKINGS THROUGHOUT LENGTH OF VEIN; AT LEAST ONE SHAFT; PITS
Comment (Location): INFO FROM LAND.ST :(1976)
Comment (Development): BACKGROUND RADIATION 1.0 MR/HR, RADIATION ALONG VEIN 3.0 MR/HR
Comment (Production): UNTIL 1958 ALL KNOWN PRODUCTION WAS FOR BARITE
References
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.119
Reference (Deposit): BROCK, M.R. AND SINGEWALD, Q.D., 1968, GEOLOGIC MAP OF THE MOUNT TYNDALL QUADRANGLE, CUSTER COUNTY, COLORADO: USGS MAP GQ-596
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): DEL RIO, S.M., 1960, MINERAL RESOURCES OF COLORADO, FIRST SEQUEL: COLORADO MINERAL RESOURCES BOARD, P. 395.
Reference (Production): DEL RIO, 1960, P. 395
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