Black Cloud Mine

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

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.

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.