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  3. Mineral Resource Data System (MRDS)

Bearhole Creek

Occurrence in Alaska, United States with commodity Copper
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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. Alteration
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10307241
Record type Site
Current site name Bearhole Creek

Geographic coordinates

Geographic coordinates: -142.50073, 60.98287 (WGS84)
Relative position This occurrence is on the north side of the valley of 'Bearhole Creek' , which is not named on the D-4 and adjacent D-5 quadrangles (Brabb and Miller, 1962) at an elevation of about 4,500 feet and 1.7 miles west-northwest of peak 6560. It is in the SW 1/4 of section 24, T 10 S, R 16 E of the Copper River Meridian. The location is probably accurate to within a half mile. It is locality 1 of Cobb (1972 [MF 373]; 1979 [OF 79-1246]).

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bering Glacier D-5(quadrangle 1:63,360 scale)

Bering Glacier NW(quadrangle 1:100,000 scale)

Bering Glacier 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)

Federal lands

Wrangell-St. Elias National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Feldspar Gangue
Graphite Gangue
Quartz Gangue

Alteration

  • (Local) Light color may indicate oxidation.

Nearby scientific data

(1) -142.50073, 60.98287
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = A 20-foot-wide mineralized zone in Mesozoic metasedimentary rocks contains as much as 20 percent pyrite and graphite and traces of chalcopyrite (Brabb and Miller, 1962). The zone contains quartz-feldspar-graphite veins; it is light colored and visible from a distance. Brabb and Miller (1962) observed similar mineralization locally on the south side of Bearhole Creek.
  • Age = Tertiary the mineralized zone may trend north-south across Bearhole Creek and crosscut the host metasedimentary rocks. High-grade metamorphism in this area is Early Tertiary in age (Hudson and Plafker, 1982).

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Nizina

Comments on the workings information

  • Workings / Exploration = Reconnaissance surface observations have been completed at this locality (Brabb and Miller, 1962).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Brabb and Miller, 1962

General comments

Subject category Comment text
Deposit Model Name = Shear zone with quartz-feldspar-graphite veins?
Deposit Other Comments = This occurrence is within the Wrangell-St. Elias National Park.

Reporter information

Type Date Name Affiliation Comment
Reporter 12-DEC-01 Travis L. Hudson Applied Geology

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.