Cramer Quarry

The Cramer Quarry is a feldspar mine located in Douglas county, Colorado at an elevation of 8,199 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: Cramer Quarry  

State:  Colorado

County:  Douglas

Elevation: 8,199 Feet (2,499 Meters)

Commodity: Feldspar

Lat, Long: 39.28833, -105.05472

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 Cramer Quarry

Cramer Quarry MRDS details

Site Name

Primary: Cramer Quarry
Secondary: Magnuson Quarry


Commodity

Primary: Feldspar
Tertiary: Thorium
Tertiary: Uranium
Tertiary: REE


Location

State: Colorado
County: Douglas
District: Devils Head Pegmatite 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

Type: Surface


Ownership

Owner Name: M And S, Inc.
Home Office: Denver, Co.
Years: 1951 -


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1942
Year Last Production: 1951
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, Pikes Peak Batholith, Rampart Range Uplift

Type: L
Description: Perry Park-Jarre Canyon Fault, Rampart Range Fault, Manitou Park Half Graben


Alterations

Not available


Rocks

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

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


Analytical Data

Not available


Materials

Ore: Microcline
Gangue: Euxenite
Gangue: Fluorite
Gangue: Allanite
Gangue: Biotite


Comments

Comment (Development): FELDSPAR USED FOR MANUFACTURE OF GLASS AND ENAMEL

Comment (Location): ALONG UNNAMED TRIBUTARY OF JACKSON CREEK 3.1 MILES NE OF DEVILS HEAD ; INFO FROM LAND.ST :(1974)

Comment (Deposit): UNZONED PEGMATITE

Comment (Workings): OPEN CUT, 60-FT-HIGH FACE WORKED ON 14-FT BENCHES


References

Reference (Deposit): MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 24-25.

Reference (Deposit): BRYANT, BRUCE, AND OTHERS, 1981, GEOLOGIC MAP OF THE DENVER 1X2 QUADRANGLE, NORTH-CENTRAL COLORADO: USGS MAP I-1163.

Reference (Deposit): HEINRICH, E.W., 1957, PEGMATITE PROVINCES OF COLORADO: COLORADO SCHOOL MINES QUART., V. 52, NO. 4, P. 1-22.

Reference (Deposit): TRIMBLE, D.E., AND MACHETTE, M.N., 1979, GEOLOGIC MAP OF THE COLORADO SPRINGS-CASTLE ROCK AREA, FRONT RANGE URBAN CORRIDOR, COLORADO: USGS MAP I-857-F.

Reference (Production): COLO. DIV. MINES ANN. OPERATOR REPTS.


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.