The Wasson Pegmatite is a beryllium, feldspar, and mica mine located in Jefferson county, Colorado at an elevation of 7,520 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: 7,520 Feet (2,292 Meters)
Commodity: Beryllium, Feldspar, Mica
Lat, Long: 39.70333, -105.31417
Map: View on Google Maps
Satelite View
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Wasson Pegmatite MRDS details
Site Name
Primary: Wasson Pegmatite
Secondary: Rainbow Hills Pegmatite
Secondary: Wasson Ranch Pegmatite
Commodity
Primary: Beryllium
Primary: Feldspar
Primary: Mica
Secondary: REE
Secondary: Niobium (Columbium)
Secondary: Tantalum
Tertiary: Thorium
Location
State: Colorado
County: Jefferson
District: Clear Creek Pegmatite Province
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: Past Producer
Operation Type: Unknown
Year First Production: 1944
Year Last Production: 1956
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: Floyd Hill Fault Zone, Unnamed Anticline
Alterations
Not available
Rocks
Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Tantalite
Ore: Muscovite
Ore: Beryl
Ore: Columbite
Ore: Microcline
Ore: Euxenite
Gangue: Garnet
Gangue: Thorite
Gangue: Biotite
Comments
Comment (Location): ON LOW RIDGE IN UPPER COLD SPRING GULCH ; INFO FROM LAND.ST :(1975)
Comment (Production): PRESUMED CUMULATIVE PRODUCTION
Comment (Development): USBM(?) NOTES CUMULATIVE PRODUCTION THROUGH 1956
Comment (Deposit): ZONED PEGMATITE TRENDS NW, DIPS 70 TO 80 SW PINCHING OUT BOTH TO NW AND TO SE. WALL ZONE CONTAINS AMETHYST QUARTZ, MICROCLINE, AND SOME PLAGIOCLASE; CORE IS QUARTZ-MICROCLINE. BE OCCURS IN POCKETS IN MAIN DIKE AND IN SMALL BRANCH DIKE.
Comment (Workings): OPEN CUT
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 OTHERS, 1972, GEOLOGIC MAP OF THE EVERGREEN QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS MAP I-786-A.
Reference (Deposit): MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 29.
Reference (Deposit): USBM MIN. EXAM. FILE, REPT. OF 6/1/59 (FROM ORIGINAL CRIB RECORD)
Reference (Production): ORIGINAL CRIB RECORD (PROBABLY USBM REFERENCE)
Colorado Mining Photos
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