The Cap Rock Mine is a uranium mine located in Fremont county, Colorado at an elevation of 7,749 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: 7,749 Feet (2,362 Meters)
Commodity: Uranium
Lat, Long: 38.53944, -105.47361
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Cap Rock Mine MRDS details
Site Name
Primary: Cap Rock Mine
Secondary: Cap Rock 40
Secondary: Cap Rock Claims
Commodity
Primary: Uranium
Secondary: Vanadium
Location
State: Colorado
County: Fremont
District: Tallahassee Creek
Land Status
Land ownership: BLM Administrative Area
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
Not available
Production
Year: 1962
Description: Ap_Grade: ^0.11% U308, 0.02% V205
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
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: Sandstone U
Orebody
Form: TABULAR
Form: TABULAR
Structure
Type: L
Description: Echo Park Graben, Paleo Valleys
Type: R
Description: Thirty Nine Mile Volcanic Field, Currant Creek Basin
Alterations
Alteration Type: L
Alteration Text: Oxidation; Alteration Of Feldspar To Clay;
Rocks
Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Oligocene
Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene
Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Oligocene
Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Oligocene
Analytical Data
Analytical Data: RADIOACTIVITY RANGES TO 25 TIMES BACKGROUND
Materials
Gangue: Hematite
Gangue: Limonite
Comments
Comment (Development): THERE ARE SEVERAL PROSPECTS AND PITS IN THE AREA, AND DRILLING WKS REPORTED IN THE AREA.
Comment (Location): ON NORTH SIDE OF TALLAHASSEE CREEK NEAR TWELVE MILE HOLE ; INFO FROM LAND.ST :1976
Comment (Workings): PROSPECTS, PITS
Comment (Geology): DEPOSITS LOCALIZED AND PRESERVED BY SLUGGISH GROUNDWATER MOVEMENT IN AREA. THOSE CONDITIONS STILL PRESENT AS EVIDENCED BY ARTESIAN PRESSURE IN WELLS AND SPRINGS ISSUING FROM ECHO PARK FORMATION AND BY A PRESENT URANIUM CONTENT OF GROUNDWATER IN AREA AS HIGH AS 900 PPB.
References
Reference (Deposit): WOBUS, R.A., EPIS, R.C. AND SCOTT, G.R., 1979, GEOLOGIC MAP OF THE COVER MOUNTAIN QUADRANGLE, FREMONT, PARK, AND TELLER COUNTIES. COLORADO: USGS MAP I-1179. 1:62,500.
Reference (Deposit): DICKINSON, K.A., 1981, GEOLOGIC CONTROLS OF URANIUM MINERALIZATION IN THE TALLAHASSEE CREEK URANIUM DISTRICT, FREMONT COUNTY, COLORADO: THEMOUNTAIN GEOLOGIST, V. 18, NO. 4, P. 88-94.
Reference (Deposit): BABCOCK, J.A., 1980, TALLAHASSEE CREEK URANIUM DEPOSITS: DENVER REGIONAL EXPLORATION GEOLOGISTS SOCIETY GUIDEBOOK, P. 15-31.
Reference (Production): NELSON-MOORE AND OTHERS, 1978
Reference (Deposit): NELSON-MOORE, J.L., COLLINS, D.B. AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULLETIN 40,P. 145.
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
