The Combination Prospect is a feldspar and mica mine located in Chaffee county, Colorado at an elevation of 8,599 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: 8,599 Feet (2,621 Meters)
Commodity: Feldspar, Mica
Lat, Long: 38.63306, -105.98222
Map: View on Google Maps
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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.
Combination Prospect MRDS details
Site Name
Primary: Combination Prospect
Secondary: Allard Beryllium Prospect
Commodity
Primary: Feldspar
Primary: Mica
Secondary: Beryllium
Location
State: Colorado
County: Chaffee
District: Turret District
Land Status
Land ownership: National Forest
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
Owner Name: L. J. Doyle And N. J. Brookhart
Years: 1949 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 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
Not available
Structure
Type: R
Description: Southern Mosquito Range, Thirtynine Mile Volcanic Field, Arkansas Valley Graben
Type: L
Description: E-W-Trending Faults
Alterations
Not available
Rocks
Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Feldspar
Ore: Beryl
Ore: Muscovite
Gangue: Biotite
Gangue: Garnet
Gangue: Quartz
Comments
Comment (Deposit): PEGMATITE TAPERS AT BOTH ENDS;
Comment (Location): HALF MILE SOUTH OF ABANDONED TURRET SCHOOLHOUSE AND 200 YARDS SOUTH OF TURRET ROAD; ALLARD PROSPECT NEAR THE COMBINATION PROSPECT--EXACT LOCATION UNKNOWN ; INFO FROM LAND.ST :(1976)
Comment (Workings): SHALLOW SHAFT, 2 SHALLOW CUTS ON WESTERN SLOPE
Comment (Deposit): PROBABLY NOT RICH ENOUGH IN FELDSPAR OR IN BERYL TO BE OF COMMERCIAL IMPORTANCE (HANLEY, 1950) ; INFO.SRC : 1 PUB LIT
Comment (Commodity): BERYL CRYSTALS BRIGHT BLUE, 3 X 6 X 12 INCHES; FELDSPAR RED, WHITE
References
Reference (Deposit): HANLEY, J.B., HEINRICH, E.W., PAGE, L.R., 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-1944: USGS PROFESSIONAL PAPER 227, P. 23-27
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, COLORADO: PH.D. THESIS, UNIVERSITY OF MICHIGAN, 131 P.
Reference (Deposit): SCOTT, G.R., TAYLOR, R.B., EPIS, R.C. AND WOBUS, R.A., 1978, GEOLOGIC MAP OF THE PUEBLO 10 X 20 QUADRANGLE, SOUTH-CENTRAL COLORADO: USGS MAP I-1022, 1:250,000
Reference (Deposit): ARGALL, G.O., JR., 1949, INDUSTRIAL MINERALS OF COLORADO: COLORADO SCHOOL OF MINES QUARTERLY, V. 44. NO. 2, P. 52
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