The Shirley Group is a beryllium, niobium (columbium), tantalum, and ree mine located in Chaffee county, Colorado at an elevation of 8,839 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: 8,839 Feet (2,694 Meters)
Commodity: Beryllium, Niobium (Columbium), Tantalum, REE
Lat, Long: 38.60806, -105.99306
Map: View on Google Maps
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Shirley Group MRDS details
Site Name
Primary: Shirley Group
Commodity
Primary: Beryllium
Primary: Niobium (Columbium)
Primary: Tantalum
Primary: REE
Secondary: Feldspar
Secondary: Mica
Location
State: Colorado
County: Chaffee
District: Turret Area
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 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: Southern Mosquito Range, Arkansas Valley Graben
Alterations
Not available
Rocks
Name: Gneiss
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Gneiss
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Beryl
Ore: Microcline
Ore: Albite
Ore: Muscovite
Gangue: Garnet
Gangue: Quartz
Gangue: Orthoclase
Comments
Comment (Deposit): UNZONED
Comment (Location): 19 CLAIMS ON RIDGE SOUTH OF LONGS GULCH, 11 MILES NORTH OF SALIDA VIA COUNTY ROAD 180, THE LONGS GULCH ROAD AND A MINE ACCESS ROAD. ; INFO FROM LAND.ST :(1976)
Comment (Workings): 1 TRENCH, SEVERAL SMALL PITS
References
Reference (Deposit): MEEVES, H.C., HARRER, C.M., SALSBURY, M.H., KONSELMAN, A.S., SHANNON, S.S., JR., 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: ARIZONA, COLORADO, NEW MEXICO, SOUTH DAKOTA, UTAH, AND WYOMING: USBM INFORMATION CIRCULAR 8298, P. 24
Reference (Deposit): VAN ALSTINE, R.E., 1974, GEOLOGY AND MINERAL DEPOSITS OF THE PONCHA SPRINGS SE QUADRANGLE, CHAFFEE COUNTY, COLORADO: USGS PROFESSIONAL PAPER 829, 19 P.
Reference (Deposit): BOARDMAN, S.J., 1976, GEOLOGY OF THE PRECAMBRIAN METAMORPHIC ROCKS OF THE SALIDA AREA, CHAFFEE COUNTY, COLORADO: THE MOUNTAIN GEOLOGIST, V. 13, NO. 3, P. 89-100.
Reference (Deposit): BOARDMAN, S.J., 1971, PRECAMBRIAN GEOLOGY AND MINERAL DEPOSITS OF THE SALIDA AREA, CHAFFEE COUNTY, COLORDADO: PH. D. THESIS, UNIVERSITY OF MICHIGAN, 131 P.
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