The Cora B Claim is a thorium mine located in Custer county, Colorado at an elevation of 9,049 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: 9,049 Feet (2,758 Meters)
Commodity: Thorium
Lat, Long: 38.1875, -105.29194
Map: View on Google Maps
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Cora B Claim MRDS details
Site Name
Primary: Cora B Claim
Secondary: Greenwood Property
Commodity
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
Not available
Ownership
Owner Name: Henry G. Prior And Others
Years: 1953 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Surface-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
Not available
Structure
Type: R
Description: Wet Mountains
Type: L
Description: Nw-Trending Shear Zones; Three Shear Zones
Alterations
Not available
Rocks
Name: Plutonic Rock
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Plutonic Rock
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Analytical Data
Analytical Data: .024 TO .026% EQUIV. U, .001% U, .13 TO .14% EQUIV. TH02
Materials
Ore: Thorite
Gangue: Barite
Gangue: Pyrite
Gangue: Hematite
Gangue: Galena
Gangue: Quartz
Gangue: Fluorite
Gangue: Limonite
Gangue: Siderite
Comments
Comment (Workings): TWO SHAFTS, FOUR PROSPECT PITS
Comment (Geology): STRONGEST RADIOACTIVITY ASSOCIATED WITH HEMATITE; STRONG FETID ODOR IN ROCK, ESPECIALLY IN QUARTZ; DEPOSIT SPACIALLY AND GENETICALLY RELATED TO CAMBRIAN ALKALIC COMPLEX
Comment (Location): ON GREENWOOD PROPERTY, THREE MILES NORTH OF THE HAPUTA RANCH; ABOUT 3/4 MILE NE OF DRY LAKE, EAST OF HWY 143 ; INFO FROM LAND.ST :1976
Comment (Deposit): Discovery Year: EARLY 1950'S
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. 17-19
Reference (Deposit): BROCK, M.R. AND SINGEWALD, Q.D., 1968, GEOLOGIC MAP OF THE MOUNT TYNDALL QUADRANGLE, CUSTER COUNTY, COLORADO: USGS MAP GQ-596, 1:24,000.
Colorado Mining Photos
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