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Anna C. Mine

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. 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. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10017193
MRDS ID DC03055
MAS/MILS ID 80130076
Record type Site
Current site name Anna C. Mine
Related records 10117636

Geographic coordinates

Geographic coordinates: -105.53, 39.97306 (WGS84)
Relative position 1 1/3 MI NW OF NEDERLAND

Site location context

Political divisions (FIPS codes)

Boulder(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nederland(quadrangle 1:24,000 scale)

Denver West(quadrangle 1:100,000 scale)

Denver(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

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 01S 73W 11 Colorado

Comments on the location information

  • LATITUDE-LONGITUDE VALUES CALCULATED FROM TOWNSHIP, RANGE, SECTION.

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Ferberite Ore

Mineral occurrence model information

Model code 46
USGS model code 15a
Deposit model name W veins

Host and associated rocks

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

Nearby scientific data

(1) -105.53, 39.97306
ListMap

Economic information

Comments on the geologic information

  • FERBERITE AND HORN QTZ. IN SHEAR ZONE IN BOULDER CR. GRANITE AND IDAHO SPGS SCHIST.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Boulder Tungsten District

Ownership information

  • Type Owner
    Owner O.B. Scott
    Home office Rye, CO
    Year 1960
  • Type Operator
    Owner M.W. MacKenzie
    Year 1960
  • Type Lessee
    Owner James L. McBroom
    Year 1953

Comments on the production information

  • Produced less than 500 units of WO3 (Colo Mining Fund Board, 1960, p. 10). DMEA-3021 is more optimistic at not more than 1,000 units.

Comments on the workings information

  • 155' shaft; levels at 90, 115, and 155 feet. A later shallow shaft was sunk at the east edge of the dump, from which ore was stoped. Most of the production was taken from above the 115' level. (Colo Mining Fund Board, 1960, p. 10)

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 1973-03-01 Conservation Division Files U.S. Geological Survey
Updater 1974-01-01 Unknown U.S. Geological Survey
Reporter 1983-11-17 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines MAS 0080130076 = 10117636
Editor 2007-05-29 Melton, Greg U.S. Geological Survey also MAS 0080130076 = 10117636
Editor 2013-12-13 Wilson, Anna B U.S. Geological Survey merged duplicate record 10017636

Beyond USGS

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

External references

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.