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  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Gemini Mine

Past Producer in Jefferson county in Colorado, United States with commodities Quartz, Iron
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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. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10013723
MRDS ID D010174
Record type Site
Current site name Gemini Mine

Geographic coordinates

Geographic coordinates: -105.19225, 39.37833 (WGS84)
Elevation 2161
Relative position 18.8 MILES S 21 E FROM EVERGREEN

Site location context

Political divisions (FIPS codes)

Jefferson(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Platte Canyon(quadrangle 1:24,000 scale)

Bailey(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper South Platte(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Pike and San Isabel National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Jefferson

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 008S 070W 02 SW OF SE Colorado

Comments on the location information

  • SOUTH OF SPRING CREEK BETWEEN HOLLINGSWORTH AND JANET LUCRITIA PEGMATITES ; INFO FROM LAND.ST :(1975)

Commodities

Commodity Importance
Quartz Primary
Iron Tertiary

Materials information

Materials Type of material
Quartz Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Pegmatite;Pikes Peak Granite
    Rock description Pegmatite;Pikes Peak Granite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Pegmatite;Pikes Peak Granite
    Rock description Pegmatite;Pikes Peak Granite

Economic information

Geologic structures

Type of structure Regional
Structure description Front Range Uplift, Pikes Peak Batholith
Type of structure Local
Structure description Kennedy Gulch Fault Zone

Ore body information

  • General form OVAL
    Length 22.86M
    Width 18.29M

Economic information about the deposit and operations

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

Mining district

District name South Platte Pegmatite District

Land status

Ownership category National Forest

Comments on the workings information

  • OPEN CUTS

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit TWO ZONED PEGMATITES CONSIST OF WALL ZONE OF QUARTZ-MICROCLINE-BIOTITE AND CORE OF MICROCLINE-QUARTZ. QUARTZ REPLACED BY LARGE BODY OF SPECULAR HEMATITE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1983 Schwochow, Stephen D. Colorado Geological Survey
Updater 01-MAY-1993 Spanski, Gregory T. U.S. 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.