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Black Cloud Mine

Producer in Teller county in Colorado, United States with commodities Feldspar, Beryllium, REE, Quartz, Thorium, Niobium (Columbium), Tantalum
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Land status
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10017698
MRDS ID DC04051
Record type Site
Current site name Black Cloud Mine
Alternate or previous names Spillman Prospect
Related records 10240111

Geographic coordinates

Geographic coordinates: -105.21335, 38.93833 (WGS84)
Elevation 2765
Relative position SE 1/4 NE 1/4 NE 1/4 OR 800' N OF U. S. 24. 2.3 MILES W. OF DIVIDE COLO.

Site location context

Political divisions (FIPS codes)

Teller(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Divide(quadrangle 1:24,000 scale)

Pikes Peak(quadrangle 1:100,000 scale)

Pueblo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Platte Headwaters(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Colorado Teller

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 13S 70W 09 Colorado

Commodities

Commodity Importance
Feldspar Primary
Beryllium Critical Tertiary
REE Critical Tertiary
Quartz Tertiary
Thorium Tertiary
Niobium (Columbium) Critical Tertiary
Tantalum Critical Tertiary

Materials information

Materials Type of material
Apatite Ore
Beryl Ore
Columbite Ore
Feldspar Ore
Fluorite Ore
Microlite Ore
Pyrochlore Ore
Quartz Ore
Tantalite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -105.21335, 38.93833
ListMap

Economic information

Ore body information

  • General form LENSOID
    Strike N 40 W
    Dip STEEP TO VERTICAL

Comments on the geologic information

  • 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

Economic information about the deposit and operations

Development status Producer
Commodity type Both
Significant No

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Carl Quist
    Home office Lake George, Co.
  • Type Owner
    Owner Inter. Minerals And Chemicals Corp.
    First year 1959

Comments on the production information

  • 585 TONS/MONTH OF FELDSPAR IN OCT 1941

Reference information

Bibliographic references

  • 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.

  • Deposit

    APPENDIX TO SPECIAL MAP NO. 10, MISSOURI BASIN STUDIES, P. 131, 1946

  • Deposit

    USBM MIN. EXAM. FILE

  • 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

General comments

Subject category Comment text
Deposit QUARRY 200' X 20' X 25' DEEP ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1973 Unknown U.S. Geological Survey
Updater 01-JUN-1980 Foord, Suzann C U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.