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
Elevation: 8,199 Feet (2,499 Meters)
Commodity: Feldspar
Lat, Long: 39.28833, -105.05472
Map: View on Google Maps
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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.
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