The Mt. Judge Beryl Pegmatite is a beryllium mine located in Clear Creek county, Colorado at an elevation of 9,600 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: 9,600 Feet (2,926 Meters)
Commodity: Beryllium
Lat, Long: 39.6675, -105.44944
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.
Mt. Judge Beryl Pegmatite MRDS details
Site Name
Primary: Mt. Judge Beryl Pegmatite
Commodity
Primary: Beryllium
Tertiary: Feldspar
Location
State: Colorado
County: Clear Creek
District: Clear Creek Pegmatite Province
Land Status
Land ownership: Federal
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: Past Producer
Operation Type: Unknown
Year First Production: 1942
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
Form: TABULAR
Structure
Type: R
Description: Front Range Uplift, Denver Basin
Type: L
Description: Kennedy Gulch Fault Zone
Alterations
Not available
Rocks
Name: Pegmatite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
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: Beryl
Ore: Microcline
Gangue: Plagioclase
Gangue: Biotite
Comments
Comment (Location): ON NE SIDE OF MT. JUDGE ; INFO FROM LAND.ST :(1975)
Comment (Development): BERYL ORE COBBED OUT IN 1942
Comment (Deposit): NE-TRENDING SWARM OF PEGMATITES CUTS ACROSS FOLIATION OF HORNBLENDE AND CALC-SILICATE GNEISS. PINK MICROCLINE AND ALBITE WITH QUARTZ IN BORDER ZONE; GRAPHIC PEGMATITE BORDERING CORE; 2-FT CORE OF BLACK QUARTZ AND BERYL.
References
Reference (Deposit): BOOS, M.F., 1954, GENESIS OF PRECAMBRIAN PEGMATITES IN THE DENVER MOUNTAIN PARKS AREA, COLORADO: GSA BULL., V. 65, P. 115-142
Reference (Deposit): SHERIDAN, D.M., AND MARSH, S.P., 1976, GEOLOGIC MAP OF THE SQUAW PASS QUADRANGLE, CLEAR CREEK, JEFFERSON, AND GILPIN COUNTIES, COLORADO: USGS MAP GQ-1337
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
