Prospect in Alaska, United States with commodity Copper

Geologic information

Identification information

Deposit ID 10307307
Record type Site
Current site name Beltz

Geographic coordinates

Geographic coordinates: -161.11333, 65.5594 (WGS84)
Relative position The Beltz prospect is at an elevation of about 1,000 feet on the ridge about 0.6 miles west-northwest of the junction of Split and Bear Creeks. The map site is in section 23, T. 2 N., R. 12 W., of the Kateel River Meridian.
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Geographic areas

Country State
United States Alaska


Commodity Importance
Copper Primary

Comments on the commodity information

  • Gangue = Iron oxides

Materials information

Materials Type of material
Chalcopyrite Ore
Malachite Ore
Quartz Gangue


  • (Local) Local iron- and copper-staining.

Nearby scientific data

(1) -161.11333, 65.5594

Comments on the geologic information

  • Geologic Description = Bedrock at the Beltz prospect is mainly altered, Jurassic-Cretaceous andesitic tuff and greenstone cut by mafic and felsic dikes. Quartz and calcite veins carry disseminated chalcopyrite. The rocks are iron- and copper-stained (Harrington, 1919).
  • Age = Jurassic-Cretaceous or younger.

Economic information

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Inactive

Mining district

District name Fairhaven

Comments on the workings information

  • Workings / Exploration = The deposit has been prospected by ten or more small pits. In 1917, the pits were badly caved and filled with slope talus (Harrington, 1919). The site was visited by Herreid (1965), who reports a trench 80 feet long and 3 to 5 feet deep.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF CA048

Bibliographic references

  • Deposit

    Cathcart, S.H., 1922, Metalliferous lodes in southern Seward Peninsula: U.S. Geological Survey Bulletin 722, p. 163-261.

  • Deposit

    Anderson, Eskil, 1947, Mineral occurrences other than gold deposits in northwestern Alaska: Alaska Territorial Division of Mines Pamphlet 5-R, 48 p.

  • Deposit

    Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p.

  • Deposit

    Harrington, G.L., 1919, The gold and platinum placers of the Kiwalik-Koyuk region: U.S. Geological Survey Bulletin 692, p. 369-400.

  • Deposit

    Herreid, G.H., 1965, Geology of the Bear Creek area, Seward Peninsula, Candle quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Geological Report 12, 16 p., 1 sheet, scale 1:40,000.

  • Deposit

    Gault, H.R., Killeen, P.L., West, W.S. and others, 1953, Reconnaissance for radioactive deposits in the northwestern part of the Seward Peninsula, Alaska 1945-47 and 1951: U.S. Geological Survey Circular 250, 31 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Candle Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-389, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Harrington, 1919

General comments

Subject category Comment text
Deposit Model Name = Chalcopyrite-quartz-calcite veins in andesite, tuff, and greenstone.

Reporter information

Type Date Name Affiliation Comment
Reporter 12-JAN-00 Williams, Anita U.S. Geological Survey