Pawnee Buttes N.E. Deposit

The Pawnee Buttes N.E. Deposit is a uranium mine located in Weld county, Colorado at an elevation of 4,902 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

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.

Site Name

Primary: Pawnee Buttes N.E. Deposit
Secondary: Pawnee Deposit

Commodity

Primary: Uranium
Secondary: Vanadium

Location

State: Colorado
County: Weld
District: Grover/Keota 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

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1971
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Colorado Piedmont

Mineral Deposit Model

Not available

Orebody

Form: ROLL FRONT

Structure

Type: R
Description: Cheyenne Basin

Alterations

Alteration Type: L
Alteration Text: Alteration Present But Not Detectable In Field By Usual Color Changes

Rocks

Name: Sandstone
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous

Analytical Data

Analytical Data: AVERAGE 0.07% U308, 0.14% EU308: ORE ZONE OUT OF EQUILIBRIUM

Materials

Gangue: Pyrite

Comments

Comment (Location): LATITUDE, LONGITUDE GIVEN ARE FOR CENTER, SECTION 25 ; INFO FROM LAND.ST :1976

Comment (Reserve-Resource): READE, 1978

Comment (Development): DISCOVERED DURING INITIAL, WIDE-SPACED DRILLING PROGRAM.

Comment (Deposit): ORIENTATION SUGGESTS SOUTHWARD GROUNWATER MOVEMENT DURING URANIUM DEPOSITION. THE SOLUTION FRONT IS LINEAR AND ALIGNED IN AN EAST-WEST DIRECTION;

Comment (Workings): DRILLING TO DELINEATE ORE BODY

References

Reference (Deposit): KIRKHAM, R.M., O'LEARY, W. AND WARNER, J.W., 1980, HYDROGEOLOGIC AND STRATIGRAPHIC DATA PERTINENT TO URANIUM MINING, CHEYENNE BASIN, COLORADO: CGS INFORMATION SERIES 12, 31 P.

Reference (Deposit): READE, H.L., 1978, URANIUM DEPOSITS: NORTHERN DENVER-JULESBURG BASIN, COLORADO, IN PRUIT, J.D. AND COFFIN, P.E., EOS., ENERGY RESOURCES OF THE DENVER BASIN: ROCKY MTN. ASSOC. GEOLOGISTS GUIDEBOOK, P. 161-171

Colorado Mining Photos

Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.