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  3. Mineral Resource Data System (MRDS)

Westover

Past Producer in Alaska, United States with commodities Copper, Silver
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10001033
MRDS ID A011709
Record type Site
Current site name Westover
Related records 10185810

Geographic coordinates

Geographic coordinates: -142.49941, 61.39662 (WGS84)
Relative position Near head of Boulder Creek, a tributary of Dan Creek. Best location: MacKevett and Smith, 1972. Accurate within radius of 100 feet.

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

McCarthy B-4(quadrangle 1:63,360 scale)

McCarthy SE(quadrangle 1:100,000 scale)

McCarthy C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Chitina River(hydrologic unit)

Copper River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Silver Secondary

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Chalcopyrite Ore
Malachite Ore

Mineral occurrence model information

Model code 87
USGS model code 23
Deposit model name Basaltic Cu (BC name is Volcanic redbed Cu)
Mark3 model number 118

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Chitistone Limestone
    Rock description Chitistone Limestone
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic

Nearby scientific data

(1) -142.49941, 61.39662
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Bornite and minor chalcocite, malachite and chalcopyrite in wedge-shaped pods, lenses, veins, and disseminations in lower 20 ft of the Upper Triassic Chitistone Limestone which overlies the Nikolai Greenstone. Largest pod 10 m long and 3 m wide. Limestone locally silicified near ore. Similar to Kennicott deposit (MC003).
  • Age = Cretaceous

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Nizina

Comments on the production information

  • Production Notes = Minor production 1911-1920.

Comments on the workings information

  • Workings / Exploration = More than 400 m of underground workings on 4 unconnected levels driven between 1911 and 1930. Channel samples across lode contain 50 ppm Ag, 2,000 ppm As, >2 percent Cu (MacKevett and Smith, 1968).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Miller, 1946

General comments

Subject category Comment text
Deposit Model Name = Basaltic Cu

Reporter information

Type Date Name Affiliation Comment
Reporter 07-MAR-94 Leonard, K.R. U.S. Geological Survey
Reporter 07-MAR-94 Elliott, R.L. U.S. Geological Survey
Reporter 07-MAR-94 Nokleberg, W.J. U.S. Geological Survey
Reporter 07-MAR-94 Richter, D.H. 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 Alaska resources

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