Unidentified Occurrence

Past Producer in Fremont county in Colorado, United States with commodities Feldspar, Mica, Quartz, Uranium
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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10087768
MRDS ID D009474
Record type Site
Current site name Unidentified Occurrence
Related records 10239546

Geographic coordinates

Geographic coordinates: -105.2839, 38.40834 (WGS84)
Elevation 1829
Location accuracy 1000(meters)
Relative position 3 MILES S 55 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)

Federal lands

Bureau of Land Management(Bureau of Land Management CO)

Bureau of Land Management CO BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Colorado Fremont

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 019S 071W 12 N2 Colorado

Comments on the location information

  • LOCATED NEAR THE BOTTOM OF GRAPE CREEK GULCH ; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Feldspar Primary
Mica Secondary
Quartz Secondary
Uranium Tertiary

Materials information

Materials Type of material
Microcline Ore
Muscovite Ore
Biotite Gangue
Feldspar Gangue
Quartz Unknown

Alteration

  • (Local) Slight Wallrock Silicification

Analytical data

Result RADIOACTIVITY TO 3 TIMES BACKGROUND

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Pegmatite Dikes
    Rock description Pegmatite Dikes
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Migmatitic Gneiss (Idaho Springs Formation)
    Rock description Migmatitic Gneiss (Idaho Springs Formation)
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -105.2839, 38.40834

Economic information

Geologic structures

Type of structure Regional
Structure description Southern Colorado Front Range, Canon City Embayment, Royal Gorge "Anticline"
Type of structure Local
Structure description Ene-Trending Faults

Controls for ore emplacement

  • Pegmatites

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No

Mining district

District name Grape Creek Area

Land status

Ownership category BLM Administrative Area

Comments on development

  • MINING WAS CONDUCTED, BUT PROBABLY FOR FELDSPAR OR MICA RATHER THAN FOR URANIUM

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit URANIUM IN FRACTURES

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1982 Collins, Donna B. Colorado Geological Survey

Beyond USGS

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

Authoritative Colorado resources

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