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Mother Lode

Prospect in Alaska, United States with commodity Copper
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Geologic information

Identification information

Deposit ID 10002919
MRDS ID A015410
Record type Site
Current site name Mother Lode
Alternate or previous names Dome Creek
Related records 10160468

Geographic coordinates

Geographic coordinates: -147.61407, 65.03856 (WGS84)
Relative position Cobb (1972, MF-413), loc. 15; SE1/4SE1/4 sec. 31, T. 3 N., R. 1 E., of the Fairbanks Meridian. The prospect is 1/2 mile north of Dome Camp, at an elevation of about 1,000 feet. Accuracy is within 2,500 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore

Nearby scientific data

(1) -147.61407, 65.03856
ListMap

Comments on the geologic information

  • Geologic Description = Material on dumps is graphitic limestone heavily impregnated with disseminated sulfides, mainly pyrite with some chalcopyrite and arsenopyrite (Smith, 1913; B 525, p. 194). Smith (1913, B 525) also reported post-sulfide faulting.? Two shafts were sunk on this prospect (Smith, 1913; B 525, p. 180). The western shaft was 147 feet deep, with a short crosscut at the bottom running eastward. The eastern shaft, 200 paces east of the western shaft, was sunk 215 feet. The first 60 feet was sunk through muck and the rest through rock with no intervening gravel. No production has been reported.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairbanks

Comments on the production information

  • Production Notes = No production reported.

Comments on the workings information

  • Workings / Exploration = Two shafts were sunk on this prospect (Smith, 1913; B 525, p. 180). The western shaft was 147 feet deep, with a short crosscut at the bottom running eastward. The eastern shaft, 200 paces east of the western shaft, was sunk 215 feet. The first 60 feet was sunk through muck and the rest through rock with no intervening gravel. The two shafts were nearly filled with water in 1912 (Smith, 1913; B 525, p. 180).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015410
USGS Alaska Resource Data File ARDF LG050

Bibliographic references

  • Deposit

    Prindle, L.M., and Katz, F.J., 1913, Detailed description of the Fairbanks district, in Prindle, L. M., A geologic reconnaissance of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Bulletin 525, p. 59-152.

  • Deposit

    Smith, P.S., 1913, Lode mining near Fairbanks, in Prindle, L.M., A geologic reconnaissance of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Bulletin 525, p. 153-216.

  • Deposit

    Smith, P.S., 1913, Lode mining near Fairbanks: U.S. Geological Survey Bulletin 542-F, p. 137-202.

  • 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 = Smith, 1913 (B 525)

General comments

Subject category Comment text
Deposit Model Name = Polymetallic carbonate replacement.

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