Stone Placer Mine

The Stone Placer Mine is a uranium mine located in Jefferson county, Colorado at an elevation of 6,001 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: Stone Placer Mine
Secondary: Seven Devils Prospect

Commodity

Primary: Uranium

Location

State: Colorado
County: Jefferson
District: Waterton (Kassler) 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

Year: 1960
Time Period: 1958-1960
Material type: ORE U ACC
Description: Cp_Grade: ^0.44% U3o8

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year Last Production: 1960
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: Denver Basin, Front Range Uplift

Type: L
Description: Floyd Hill Fault Zone

Alterations

Not available

Rocks

Name: Diabase
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene

Name: Diabase
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Name: Diabase
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Diabase
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Analytical Data

Not available

Materials

Ore: Pitchblende

Comments

Comment (Location): DIRECTLY WEST OF SOUTH PLATTE RIVER ; INFO FROM LAND.ST :(1976)

References

Reference (Deposit): PETERSON, W.L., 1964, GEOLOGY OF THE PLATTE CANYON QUADRANGLE, COLORADO: USGS BULL. 1181-C

Reference (Production): NELSON-MOORE, ET. AL., 1978

Reference (Deposit): NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: COLORADO GEOLOGICAL SURVEY BULL. 40, P. 195

Colorado Mining Photos

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