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

Boulder County Tungsten District

Past Producer in Boulder 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. Commodities
  6. Alteration
  7. Nearby scientific data
  8. Geologic structures
  9. Controls for ore emplacement
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 60000019
MRDS ID D001107
Record type District
Current site name Boulder County Tungsten District
Alternate or previous names Boulder District-Colorado

Geographic coordinates

Geographic coordinates: -105.45, 40.00001 (WGS84)

Site location context

Political divisions (FIPS codes)

Boulder(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Gold Hill(quadrangle 1:24,000 scale)

Estes Park(quadrangle 1:100,000 scale)

Greeley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

St. Vrain(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Arapaho and Roosevelt 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 Boulder

Commodities

Commodity Importance
Tungsten Critical Primary

Alteration

  • (Local) SERICITIZATION
  • (Local) CLAY ALTERATION

Nearby scientific data

(1) -105.45, 40.00001
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description PORPHYRY DIKES OF EARLY TERTIARY AGE CUT THE PRECAMBRIAN ROCKS
Type of structure Regional
Structure description INTERSECTIONS OF BRECCIA REEFS (FAULTS OF LARAMIDE AGE WITH LATER LARAMIDE FRACTURES)

Controls for ore emplacement

  • Fault/fracture

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant Yes
Discovery year 1900

Mining district

District name BOULDER DISTRICT

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    LEMMON, D.M., UNPUBLISHED DATA.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.

  • Deposit

    VANDERWILT, J.W., 1947, MINERAL RESOURCES OF COLORADO, STATE OF COLO. MIN. RES. BOARD, P.328-336.

Reporter information

Type Date Name Affiliation Comment
Editor 2013-12-12 Wilson, Anna B U.S. Geological Survey revised slightly. added cross references to deleted records.

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.