The Big Bear Claim is a uranium mine located in Fremont county, Colorado at an elevation of 6,801 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: 6,801 Feet (2,073 Meters)
Commodity: Uranium
Lat, Long: 38.46861, -105.54444
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.
Big Bear Claim MRDS details
Site Name
Primary: Big Bear Claim
Secondary: Big Hole Claim
Secondary: Cactus Claims
Commodity
Primary: Uranium
Location
State: Colorado
County: Fremont
District: Echo Park Area; Devils Hole Area
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: Occurrence
Operation Type: Unknown
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
Not available
Orebody
Form: TABULAR
Form: TABULAR
Structure
Type: R
Description: Thirtynine Mile Volcanic Field
Type: L
Description: Echo Park Graben, Paleovalleys, Faults
Alterations
Alteration Type: L
Alteration Text: Oxidation, Alteration Of Feldspar To Clay
Rocks
Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Eocene
Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Eocene
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
Analytical Data: RADIOACTIVITY RANGES FROM 20 TO 30 TIMES BACKGROUND
Materials
Not available
Comments
Comment (Deposit): Discovery Year: EARLY 1950'S
Comment (Development): EXPLORATORY DRILLING IN 1954
Comment (Workings): DISCOVERY 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.
Comment (Location): ONE MILE NORTH ALONG ROAD FROM ECHO STATION OF THE D & RGW RQILROAD; IN DEVILS HOLE AREA ; INFO FROM LAND.ST :1976
References
Not available
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
