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Michley

Past Producer in Alaska, United States with commodity Gold
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Geologic information

Identification information

Deposit ID 10002797
MRDS ID A015263
Record type Site
Current site name Michley
Related records 10185791

Geographic coordinates

Geographic coordinates: -148.02906, 64.88077 (WGS84)
Relative position The Michley mine is located in the SE1/4SW1/4 sec. 30, T. 1 N., R. 2 W., Fairbanks Meridian. This mine is at an elevation of about 1,560 feet in the head of Sheep Creek. It is about 0.8 mile east of the top of Ester Dome. This mine is locality 13 of Cobb (1972 [MF 410]).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

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

Nearby scientific data

(1) -148.02906, 64.88077
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Comments on the geologic information

  • Geologic Description = By 1931, a 200-foot crosscut was driven S. 75 E. into the hill through flat-lying quartz-mica schist (Hill, 1933, p. 149). Several narrow quartz veinlets with north-south strikes and steep dips either to the east or west are exposed in the tunnel. The quartz is milky white and does not appear to carry many sulfides. About 155 feet from the mouth of the tunnel, short drifts to both the north and south follow a vein that is oriented N. 4 W., dipping 60 E. near the the crosscut, but is nearly vertical in the face of the south drift. The vein is generally composed of white quartz about 2 inches thick; but in one zone, the white quartz is 12 inches thick with 4 to 6 inches of gouge surrounding it. The ore from a small stope just north of the crosscut is said to have returned approximately $10 of gold per ton (0.48 ounce of gold per ton) (Hill, 1933, p. 149).

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 = Ore from a small stope is said to have returned approximately $10 of gold per ton (0.48 ounce of gold per ton) (Hill, 1933, p. 149).

Comments on the workings information

  • Workings / Exploration = By 1931, a 200-foot crosscut was driven S. 75 E. into the hill (Hill, 1933, p. 149). About 155 feet from the mouth of the tunnel, short drifts to both the north and south follow a vein that is oriented N. 4 W., dipping 60 E. near the the crosscut, but is nearly vertical at the face of the south drift.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015263
USGS Alaska Resource Data File ARDF FB012

Bibliographic references

  • 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., 1972, Metallic mineral resources map of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-410, 1 sheet, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Fairbanks quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-662, 174 p.

Comments on the references

  • Primary Reference = Hill, 1933

General comments

Subject category Comment text
Deposit Model Name = Schist-hosted gold-quartz vein

Reporter information

Type Date Name Affiliation Comment
Reporter 31-JUL-2001 J.R. Guidetti Schaefer Avalon Development Corporation
Reporter 31-JUL-2001 C.J. Freeman Avalon Development Corporation