The Black Cloud Mine is a feldspar mine located in Teller county, Colorado at an elevation of 9,072 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: 9,072 Feet (2,765 Meters)
Commodity: Feldspar
Lat, Long: 38.93833, -105.21278
Map: View on Google Maps
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Black Cloud Mine MRDS details
Site Name
Primary: Black Cloud Mine
Secondary: Spillman Prospect
Commodity
Primary: Feldspar
Tertiary: Thorium
Tertiary: Niobium (Columbium)
Tertiary: Tantalum
Tertiary: Beryllium
Tertiary: REE
Tertiary: Quartz
Location
State: Colorado
County: Teller
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
Owner Name: Inter. Minerals And Chemicals Corp.
Years: 1959 -
Owner Name: Carl Quist
Home Office: Lake George, Co.
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Form: LENSOID
Structure
Not available
Alterations
Not available
Rocks
Name: Granite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Feldspar
Ore: Fluorite
Ore: Columbite
Ore: Pyrochlore
Ore: Quartz
Ore: Beryl
Ore: Apatite
Ore: Tantalite
Ore: Microlite
Comments
Comment (Geology): ZONES OF PEGMATITE 1) WALL ZONE-QUARTZ, OLIGOCLASE, MICROCLINE, FINE-GRAINED, UP TO 25 FT THICK 2) INTERMEDIATE ZONE PINK MICROCLINE, WHITE TO GRAY QUARTZ PODS, SMALL BERYL CRYSTALS, 50-75 FT THICK 3) CORE ZONE-MILKY QUARTZ WITH PRIMARY VUGS OF CLEAR, MILKY OR SMOKY QUARTZ CRYSTALS UP TO 50 FT THICK 4) REPLACEMENT LENSES AND PODS OF FLUORITIC AND ALBITIC MATERIAL IN INTERMEDIATE ZONE ALONG CONTACTS BETWEEN QUARTZ AND MICROCLINE 5) FRACTURE-CONTROLLED CONCENTRATIONS OF BIOTITE BOOKS ; GEOL.DESC: ZONE PEGMATITE
Comment (Deposit): QUARRY 200' X 20' X 25' DEEP ; INFO.SRC : 1 PUB LIT
Comment (Production): 585 TONS/MONTH OF FELDSPAR IN OCT 1941
References
Reference (Deposit): HEINRICH, E.W. AND GROSS, E.B., 1960, FLUORCITE AND ASSOCIATED MINERALS FROM THE BLACK CLOUD PEGMATITE, TELLER COUNTY, COLORADO: AM. MIN., VOL. 45, NO. 3 AND 4, PG. 455-459.
Reference (Deposit): APPENDIX TO SPECIAL MAP NO. 10, MISSOURI BASIN STUDIES, P. 131, 1946
Reference (Deposit): USBM MIN. EXAM. FILE
Reference (Deposit): MEEVES, H.C., HARRER, C.M., SALSBURY, M.H., KONSELMAN, A.S. AND SHANNON, S.S., 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITES IN SIX WESTERN STATES, USDI BM INFO CIRC 8298
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
