Rim Pegmatite

The Rim Pegmatite is a feldspar mine located in Fremont county, Colorado at an elevation of 6,079 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

Name: Rim Pegmatite  

State:  Colorado

County:  Fremont

Elevation: 6,079 Feet (1,853 Meters)

Commodity: Feldspar

Lat, Long: 38.47222, -105.33611

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.


Satelite image of the Rim Pegmatite

Rim Pegmatite MRDS details

Site Name

Primary: Rim Pegmatite
Secondary: Rim Prospect


Commodity

Primary: Feldspar
Secondary: Mica
Secondary: Beryllium


Location

State: Colorado
County: Fremont
District: Eight Mile Park District


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: 1948
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

Model Name: Pegmatites


Orebody

Not available


Structure

Type: R
Description: Southern Front Range, Canon City Embayment, Eightmile Park

Type: L
Description: Ne-Trending Faults


Alterations

Not available


Rocks

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

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

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic


Analytical Data

Not available


Materials

Ore: Microcline
Ore: Muscovite
Ore: Beryl
Gangue: Quartz
Gangue: Magnetite


Comments

Comment (Location): NORTH OF ARKANSAS RIVER ; INFO FROM LAND.ST :(1976)


References

Reference (Deposit): TAYLOR, R. B., SCOTT, G. R., WOBUS, R. A. AND EPIS, R. C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE ROYAL GORGE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-869, 1:250,000

Reference (Deposit): HEINRICH, E. W., 1948, PEGMATITES OF EIGHT MILE PARK, FREMONT COUNTY, COLORADO: THE AMERICAN MINERALOGIST, V. 33, NOS. 7-10, P. 420-448, 550-587


Colorado Mining Photos

Placer mines at Cripple Creek, Colorado ca. 1892

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