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Anna Mary

Prospect in Alaska, United States with commodities Gold, Silver, Lead, Antimony
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Geologic information

Identification information

Deposit ID 10002944
MRDS ID A015438
Record type Site
Current site name Anna Mary

Geographic coordinates

Geographic coordinates: -147.3999, 65.05968 (WGS84)
Relative position Cobb (1972, MF-413), loc. 42; NW1/4 sec. 29, T. 2 N., R. 3 E., of the Fairbanks Meridian. This prospect is located on the hill between Chatham and Tamarack Creeks, at an elevation of about 500 meters.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary
Antimony Secondary

Materials information

Materials Type of material
Arsenopyrite Ore
Galena Ore
Gold Ore
Limonite Ore
Stibnite Ore

Nearby scientific data

(1) -147.3999, 65.05968
ListMap

Comments on the geologic information

  • Geologic Description = The discovery on the Mary claims was explored in 1931 and consisted of a N 70 W, 70 SW shear zone which averaged 4 to 8 feet wide. The hanging wall consists of 1 to 6 feet of crushed quartz while the footwall is 1 to 2 feet of blue clay-rich gouge (Hill, 1933). Iron oxide staining was present on some quartz, and arsenopyrite, and argentiferous galena had been identified on the prospect. A sample collected by Hill (1933) across 5 feet at the bottom of a 15 foot shaft averaged $0.46 of gold per ton (0.02 ounces of gold per ton). The Anna prospect was one hundred feet south and uphill from the Mary but had not been exposed to any degree in 1931. By 1931, the shaft on the Mary prospect had been sunk to a depth of 25 feet but had caved when visited by Stewart (1933) and Pilgrim (1932). Dump samples contained galena, arsenopyrite and stibnite with moderate gold. No production records are available from this shaft. The prospect was purchased by George Warmbold in 1938 and several pits and trenches were dug in late 1938 in an attempt to trace the shear zone.

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 workings information

  • Workings / Exploration = By 1931 the shaft on the Mary prospect had been sunk to a depth of 25 feet but had caved when visited by Stewart in 1932 and Pilgrim in 1931.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015438
USGS Alaska Resource Data File ARDF LG130

Bibliographic references

  • Deposit

    Pilgrim, E.R., 1932, Progress of lode mining in interior Alaska, 1931: Alaska Territorial Department of Mines Miscellaneous Report 194-4, 9 p.

  • Deposit

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

  • Deposit

    Stewart, B.D., 1933, Mining investigations and mine inspection in Alaska, Biennium ending March 31, 1933: Alaska Territorial Department of Mines Annual Report 1933B, 196 p.

  • 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

    Freeman, C.J., 1992, 1991 Golden Summit project final report, volume 2: Historical summary of lode mines and prospects in the Golden Summit project area, Alaska: Avalon Development Corp., 159 p. (Report held by Freegold Recovery Inc. USA, Vancouver, British Columbia.)

  • 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.

  • 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.

Comments on the references

  • Primary Reference = Hill, 1933

General comments

Subject category Comment text
Deposit Model Name = Sulfide bearing, auriferous quartz, shear zone.

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