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Big Creek

Prospect in Alaska, United States with commodities Lead, Zinc
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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. Host and associated rocks
  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 10001752
MRDS ID A012537
Record type Site
Current site name Big Creek

Geographic coordinates

Geographic coordinates: -141.0726, 63.52975 (WGS84)
Relative position Big Creek prospect is located within section 7, T. 20 N., R. 22 E., of the Copper River Meridian, at about 3000 feet elevation on a northwest facing hillside above Big Creek. It is location 12 of Singer and others (1976), and location 3 of Eberlein and others (1977). The location is accurate to within a mile.

Site location context

Political divisions (FIPS codes)

Southeast Fairbanks(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Tanacross C-1(quadrangle 1:63,360 scale)

Tanacross NE(quadrangle 1:100,000 scale)

Tanacross(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Lead Primary
Zinc Critical Primary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Sphalerite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Mica Schist

Nearby scientific data

(1) -141.0726, 63.52975
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Big Creek prospect is in an area of possible stratiform sulfide deposits. It consists of galena, sphalerite and iron sulfides disseminated in quartz-mica schist of Paleozoic and/or Precambrian age (Eberlein and others, 1977, p. 101). The regional geology around the prospect consists of amphibolite-grade quartz-mica schist that is Precambrian to Paleozoic in age (Foster, 1970). High copper anomalies were found in soil samples collected during the early 1970's, although no primary mineralization was found on the surface (David Hedderly-Smith, oral communication, 1998).

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Active?

Mining district

District name Fortymile

Comments on the workings information

  • Workings / Exploration = Surface exploration and soil sampling conducted in the 1970's. There probably has been more recent exploration in the area.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Eberlein and others, 1977

General comments

Subject category Comment text
Deposit Model Name = Stratiform Pb-Zn volcanogenic deposit?
Deposit Other Comments = See also Ladue prospect (TC012).

Reporter information

Type Date Name Affiliation Comment
Reporter 13-APR-99 Cameron, C.E. Alaska Division of Geological and Geophysical Surveys

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.