Unnamed (near pass on upper Nutmoyuk Creek)

Occurrence in Alaska, United States with commodities Copper, Silver, Gold

Geologic information

Identification information

Deposit ID 10001941
MRDS ID A012775
Record type Site
Current site name Unnamed (near pass on upper Nutmoyuk Creek)

Geographic coordinates

Geographic coordinates: -162.38332, 65.25937 (WGS84)
Relative position Nutmoyuk Creek is a west tributary to Timber Creek (BN084) and Timber Creek is a south tributary to Koyuk River. This approximate location is on the south side of the pass between upper Nutmoyuk Creek and a northeast headwater tributary to Tubutulik River. It is locality 43 of Gamble (1988).
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Geographic areas

Country State
United States Alaska


Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary

Materials information

Materials Type of material
Malachite Ore
Limonite Gangue
Quartz Gangue


  • (Local) Silicification, quartz veining, and oxidation of sulfides is present.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble

Nearby scientific data

(1) -162.38332, 65.25937

Comments on the geologic information

  • Geologic Description = Locally dolomitic and silicified marble, is cut by quartz veinlets and some oxidized sulfide veinlets (Hudson and others, locality 179, p. 16). There is some minor malachite staining. Mining claims were located in this area in 1975.
  • Age = Cretaceous ; Epigenetic mineralization in metamorphic rocks of Seward Peninsula is primarily of Cretaceous age.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Koyuk

Comments on the workings information

  • Workings / Exploration = The nature of any exploratioin work that may have taken place at this locality is not known.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012775
USGS Alaska Resource Data File ARDF BN086

Bibliographic references

  • Deposit

    Hudson, T.L., Miller, M. L., and Pickthorn, W. J., 1977, Map showing metalliferous and selected nonmetalliferous mineral deposits, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 77-796-B, 46 p., one sheet, scale 1:1,000,000.

  • Deposit

    Gamble, B.M., 1988, Non-placer mineral occurrences in the Solomon, Bendeleben, and southern part of the Kotzebue quadrangles, western Alaska: U.S. Geological Survey Map MF-1838-B, 13 p., 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Hudson and others, 1977

General comments

Subject category Comment text
Deposit Model Name = Sulfide-bearing veinlets in marble

Reporter information

Type Date Name Affiliation Comment
Reporter 15-MAR-1999 Travis L. Hudson Applied Geology