The Eureka Group is a uranium mine located in Larimer county, Colorado at an elevation of 8,159 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: 8,159 Feet (2,487 Meters)
Commodity: Uranium
Lat, Long: 40.57611, -105.42972
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.
Eureka Group MRDS details
Site Name
Primary: Eureka Group
Commodity
Primary: Uranium
Location
State: Colorado
County: Larimer
District: Crystal Mountain (Storm Mountain) Pegmatite District
Land Status
Land ownership: National Forest
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: 1956
Material type: ORE U ACC
Description: Ap_Grade: ^0.12% U308
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1956
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
Not available
Structure
Type: R
Description: Front Range Uplift
Type: L
Description: Thompson Canyon Fault, Mt Olympus Batholith, Ne-Trending Folds
Alterations
Alteration Type: L
Alteration Text: U Mineral Alteration
Rocks
Name: Tonalite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Tonalite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: CHANNEL AND CHIP SAMPLES ASSAYED 0.08 % TO 0.25 % EQUIV U308.
Analytical Data: ORE GRADE 0.12 % U308
Materials
Ore: Torbernite
Ore: Uranophane
Comments
Comment (Location): NORTH OF BUCKHORN CREEK. ELEV AND LAT-LONG GIVEN ARE FOR CENTER N2 SEC. 14. ; INFO FROM LAND.ST :(1980)
Comment (Deposit): PEGMATITE TRENDS GENERALLY N 80 W. ORE FOUND AT CONTACT BETWEEN PEGMATITE AND QUARTZ-BIOTITE SCHIST WALL ROCK.
References
Reference (Deposit): THURSTON, W.R., 1955, PEGMATITES OF THE CRYSTAL MOUNTAIN DISTRICT, LARIMER COUNTY, COLORADO: USGS BULL. 1011, 185 P., 13 PLS.
Reference (Deposit): NELSON-MOORE, J.L., AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 209.
Reference (Production): NELSON-MOORE AND OTHERS, 1978
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
