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  3. Mineral Resource Data System (MRDS)

Lake Fork Gulch Foster Ranch

Occurrence in Gilpin county in Colorado, United States with commodity Tungsten
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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. Economic information about the deposit and operations
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10008722
MRDS ID D001072
Record type Site
Current site name Lake Fork Gulch Foster Ranch

Geographic coordinates

Geographic coordinates: -105.41726, 39.78332 (WGS84)

Site location context

Political divisions (FIPS codes)

Gilpin(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Black Hawk(quadrangle 1:24,000 scale)

Denver West(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Clear(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Colorado Gilpin

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 003S 072W 22 Colorado

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Scheelite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -105.41726, 39.78332
ListMap

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    LEMMON, D.M., UNPUBLISHED DATA.

  • Deposit

    LEMMON, D.M., AND TWETO, O.L., 1962, TUNGSTEN IN THE U.S., USGS MAP, MR-25.

General comments

Subject category Comment text
Deposit THE FOSTER RANCH IS 4 MILES SE OF BLACKHAWK. THE LIME-SILICATE ROCK IS INTERBANDED WITH FOLDED HORNBLENDE GNEISS AND QUARTZ MONZONITE GNEISS, AND CUT BY NUMEROUS DIKES OF PEGMATITE AND GNEISSIC APLITE. BANDS ARE A FEW INCHES TO A FEW FEET THICK AND A FEW EXPOSURES CONTAIN SEVERAL PERCENT OF WO3 (REF. NO. 1)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1973 Elliott, James E. 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.