The Crescent Deposit is a uranium mine located in Fremont county, Colorado at an elevation of 7,949 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: 7,949 Feet (2,423 Meters)
Commodity: Uranium
Lat, Long: 38.53444, -105.48889
Map: View on Google Maps
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Crescent Deposit MRDS details
Site Name
Primary: Crescent Deposit
Commodity
Primary: Uranium
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
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Surface
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
Structure
Type: R
Description: Thirtynine Mile Volcanic Field, Currant Creek Basin
Type: L
Description: Echo Park Graben, Paleovalleys
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: Host Rock
Age Young: Oligocene
Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Oligocene
Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene
Analytical Data
Not available
Materials
Ore: Uraninite
Gangue: Hematite
Gangue: Limonite
Comments
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.
Comment (Location): ALONG NE SIDE OF TALLAHASSEE CREEK; DIRECTIONS GIVEN LEAVE SELECTION OF INDIVIDUAL MINE IN GENERAL AREA OPEN TO INTERPRETATION; HOWEVER, THE DEPOSIT IS POSSIBLY "DISRUPTED...BY LANDSLIDING" AND THE MINE AT THIS LOCATION LIES AT THE TOE OF A LANDSLIDE ; INFO FROM LAND.ST :1976
Comment (Commodity): AUTUNITE REPLACES FOSSIL WOOD IN PLACES
References
Reference (Deposit): HEINRICH, E.W. AND BEVER, J.E., 1957, RADIOACTIVE MINERAL OCCURRENCES IN THE GUFFEY AREA, PARK AND FREMONT COUNTIES, COLORADO: COLORADO SCHOOL OF MINES QUARTERLY V. 52, NO. 4, P. 33
Reference (Geology): DICKINSON, K.A., 1981, GEOLOGIC CONTROLS OF URANIUM MINERALIZATION IN THE TALLAHASSEE CREEK URANIUM DISTRICT, FREMONT COUNTY, COLORADO: THE MOUNTAIN GEOLOGIST, V. 18, NO. 4, P. 88-94.
Reference (Geology): 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.
Colorado Mining Photos
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