The Sewell Ranch is a ree and thorium mine located in Custer county, Colorado at an elevation of 8,921 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: 8,921 Feet (2,719 Meters)
Commodity: REE, Thorium
Lat, Long: 38.16806, -105.21472
Map: View on Google Maps
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Sewell Ranch MRDS details
Site Name
Primary: Sewell Ranch
Commodity
Primary: REE
Primary: Thorium
Location
State: Colorado
County: Custer
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
Type: Surface/Underground
Ownership
Owner Name: George F. And Claude A. Sewell
Years: 1952 -
Owner Name: Lewis C. Mundy, 501 So. Locust St., Pueblo, Co.; Eugene Acheson, 702 Wilson Ave., Pueblo, Co.
Years: 1952 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Underground
Discovery Year: 1952
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
Alterations
Alteration Type: L
Alteration Text: Some Alteration
Rocks
Name: Syenite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Syenite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: .007 TO .11% EQUIV. U308, : 001 TO .002% U308, .03 TO .60% EQUIV. TH02,
Materials
Ore: Thorite
Gangue: Galena
Gangue: Limonite
Gangue: Barite
Gangue: Quartz
Gangue: Calcite
Comments
Comment (Location): ALONG COLORADO 96 SW OF HARDSCRABBLE MTN ; INFO FROM LAND.ST :(1976)
Comment (Workings): TWO-40-FT ADITS, ON E 40-FT SHAFT, SEVERAL PROSPECT PITS
References
Reference (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 MAP I-1022
Reference (Deposit): CHRISTMAN, R.A., HEYMAN, A.M., DELLWIG, L.F., GOTT, G.B., 1953, THORIUM INVESTIGATIONS 1950-52, WET MOUNTAINS, COLORADO: USGS CIRCULAR 290, P. 26.
Reference (Deposit): NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L. 1978, RADIOACTIVE MINERAL OCCURRRNCES OF COLORADO AND BIBLIOGRAPHY: COLORADO GEOLOGICAL SURVEY BULLETIN 40, P. 123
Colorado Mining Photos
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