Unnamed (headwaters of the Kukpowruk River)

Occurrence in Alaska, United States with commodity Copper

Geologic information

Identification information

Deposit ID 10308756
MRDS ID A015694
Record type Site
Current site name Unnamed (headwaters of the Kukpowruk River)

Geographic coordinates

Geographic coordinates: -162.76378, 68.42945 (WGS84)
Relative position This occurrence is at an elevation of about 1,650 feet on the east bank of the upper Kukpowruk River. The map site is in section 6, T. 12 S., R. 46 W., of the Umiat Meridian. Location is accurate to within 1 mile.
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Geographic areas

Country State
United States Alaska


Commodity Importance
Copper Primary

Materials information

Materials Type of material
Malachite Ore


  • (Local) Oxidation of copper mineral.

Nearby scientific data

(1) -162.76378, 68.42945

Comments on the geologic information

  • Geologic Description = This occurrence consists of malachite that coats a 6-inch-wide fracture zone subparallel to bedding in Mesozoic maroon shale (C.F. Mayfield, written communication, 1979). Nearby creek gravels are iron stained.
  • Age = Mesozoic

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Wainwright

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF DL008

Bibliographic references

  • Deposit

    Ellersieck, I.F., Curtis, I.M., Gruzensky, A.L., Mayfield, C.F., and Tailleur, I.L., 1980, Copper, lead and zinc in stream-sediment samples from the DeLong Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-795, 3 sheets, scale 1:250,000.

  • Deposit

    Cobb, E.H., Mayfield, C.F., and Brosge, W.P., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in eleven quadrangles in northern Alaska (Arctic, Baird Mountains, Chandler Lake, DeLong Mountains, Demarcation Point, Howard Pass, Misheguk Mountain, Mount Michelson, Noatak, Point Lay, and Table Mountain); Supplement to Open-File Report 75-628; Part A, Summaries of data to January 1, 1981: U.S. Geological Survey Open-File Report 81-767-A, 25 p.

Comments on the references

  • Primary Reference = Cobb and others, 1981

General comments

Subject category Comment text
Deposit Model Name = Secondary copper mineral coating a fracture.

Reporter information

Type Date Name Affiliation Comment
Reporter 21-DEC-99 Williams, Anita U.S. Geological Survey