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Colfelco Pegmatite

Producer in Fremont county in Colorado, United States with commodities Feldspar, Mica, Beryllium
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10107986
MRDS ID D009889
Record type Site
Current site name Colfelco Pegmatite

Geographic coordinates

Geographic coordinates: -105.3564, 38.46251 (WGS84)
Elevation 1853
Relative position 7.2 MILES N 85 W OF CANON CITY

Site location context

Political divisions (FIPS codes)

Fremont(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Royal Gorge(quadrangle 1:24,000 scale)

Canon City(quadrangle 1:100,000 scale)

Pueblo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Arkansas Headwaters(hydrologic unit)

Upper Arkansas(hydrologic accounting unit)

Upper Arkansas(hydrologic subregion)

Arkansas-White-Red(hydrologic region)

Geographic areas

Country State County
United States Colorado Fremont

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 018S 071W 19,20 CENTER OF E2 (19); CENTER OF W2 (20); S2 OF N2 (20) Colorado

Commodities

Commodity Importance
Feldspar Primary
Mica Secondary
Beryllium Critical Tertiary

Materials information

Materials Type of material
Beryl Ore
Microcline Ore
Garnet Gangue
Magnetite Gangue
Quartz Gangue
Muscovite Unknown

Mineral occurrence model information

Model code 32
USGS model code 13
Deposit model name Pegmatites

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Quartz Diorite;Granodiorite
    Rock description Quartz Diorite;Granodiorite (Pikes Peak Granite)
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Pegmatite

Nearby scientific data

(1) Colorado Group
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Southern Front Range, Canon City Embayment, Eightmile Park
Type of structure Local
Structure description Ne-Trending Faults

Ore body information

  • General form SHEET-LIKE
    Strike N 65 E
    Dip SE
    Thickness 60.96M
    Length 1609.34M
    Width 396.24M
    Depth to top 0M
    Depth to bottom 60.96M

Controls for ore emplacement

  • Pegmatites, Host Rock Foliation

Economic information about the deposit and operations

Development status Producer
Commodity type Both
Deposit size Small
Significant No
Discovery year 1945
Discoverer Colorado Feldspar Co.
Year of first production 1947

Mining district

District name Eight Mile Park District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner-Operator
    Owner Colorado Feldspar Co.
    Home office Canon City, Co.
    First year 1948

Reference information

Bibliographic references

  • Deposit

    HEINRICH, E. W., 1948, PEGMATITES OF EIGHT MILE PARK, FREMONT COUNTY, COLORADO: THE AMERICAN MINERALOGIST, V. 33, NOS. 7-10, P. 420-448, 550-587

  • Deposit

    TAYLOR, R. B., SCOTT, G. R., WOBUS, R. A. AND EPIS, R. C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE ROYAL GORGE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-869, 1:250,000

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1983 Collins, Donna B. Colorado Geological Survey

Beyond USGS

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

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.