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Independence

Past Producer in Alaska, United States with commodities Gold, Lead
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Geologic information

Identification information

Deposit ID 10002901
MRDS ID A015389
Record type Site
Current site name Independence

Geographic coordinates

Geographic coordinates: -147.46795, 65.02856 (WGS84)
Relative position Cobb (1972, MF-413), loc. 32; NW1/4SW1/4 sec. 1, T. 2 N., R. 1 E., of the Fairbanks Meridian. The Independence mine is on the southeast side of Twin Creek almost opposite the mouth of Skoogy Gulch; it is about 7 miles by road northeast of Fox along the Steese Highway.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Lead Secondary

Materials information

Materials Type of material
Arsenopyrite Ore
Galena Ore
Gold Ore
Pyrite Ore

Alteration

  • (Local) Joint surfaces are iron-stained.

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -147.46795, 65.02856
ListMap

Comments on the geologic information

  • Geologic Description = Gold is found in an east-west-striking, vertical fracture zone in coarse porphyritic granite that has been cut by quartz veins. The quartz veins are broken by iron-stained joints whose surfaces are mineralized and carry gold (Brooks, 1916; B 642; Brooks, 1918). The mineralized zone has been traced for 900 feet on the surface (Brooks, 1918). The fracture zone becomes barren where it crosses the contact from granite into the schist (Brooks, 1916; B 642). Pyrite, arsenopyrite, and galena are present (Brooks, 1916; B 642).? This deposit has been developed by two tunnels. In the upper tunnel, quartz veinlets are in a zone 8-10 inches wide in porphyritic granite. This zone is vertical and strikes N 70 E (Hill, 1933). About two-thirds of the gold is in sulfide minerals, and assays show 0.19 to 1.84 ounces of gold per ton (Cobb, 1976; OFR 76-633, p. 103).

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairbanks

Comments on the production information

  • Production Notes = Probably has been minor production (Cobb, 1976; OFR 76-633, p. 103; Chapman and Foster, 1969).

Comments on the workings information

  • Workings / Exploration = Workings were badly caved by July 1931 (Hill, 1933).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015389
USGS Alaska Resource Data File ARDF LG075

Bibliographic references

  • Deposit

    Brooks, A.H., 1916, Antimony deposits of Alaska: U.S. Geological Survey Bulletin 649, 67 p.

  • Deposit

    Brooks, A.H., 1918, Mineral resources of Alaska, 1916: U.S. Geological Survey Bulletin 662, 469 p.

  • Deposit

    Hill, J.M., 1933, Lode deposits of the Fairbanks District, Alaska: U.S. Geological Survey Bulletin 849-B, p. 29-163.

  • Deposit

    Chapman, R.M., and Foster, R.L., 1969, Lode mines and prospects in the Fairbanks district, Alaska: U.S. Geological Survey Professional Paper 625-D, 25 p., 1 plate.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-633, 72 p.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Livengood quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-819, 241 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Livengood quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-413, 2 sheets, scale 1:250,000.

Comments on the references

  • Primary Reference = Brooks, 1916 (B 642)

General comments

Subject category Comment text
Deposit Model Name = Gold-quartz vein.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-MAY-1999 C.J. Freeman Avalon Development Corporation
Reporter 04-MAY-1999 J.R. Guidetti Schaefer Avalon Development Corporation