Unnamed (in headwaters of Nutmoyuk Creek)

Occurrence in Alaska, United States with commodity Gold

Geologic information

Identification information

Deposit ID 10307290
Record type Site
Current site name Unnamed (in headwaters of Nutmoyuk Creek)

Geographic coordinates

Geographic coordinates: -162.36731, 65.25237 (WGS84)
Relative position This occurrence is on the ridge crest along the north side of Death Valley between the headwaters of Nutmoyuk Creek and north tributaries to the Tubutulik River. It is about 1,000 feet south of elevation 1,920 and 3,000 feet southeast of the pass at the head of Nutmoyuk Creek (see BN086). It is locality 41 of Gamble (1988).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Fluorite Gangue
Pyrite Gangue

Nearby scientific data

(1) -162.36731, 65.25237

Comments on the geologic information

  • Geologic Description = This is an area of marble and calc-silicate rock in the eastern-most Bendeleben Mountains. The carbonate rocks here are separated from other high-grade metamorphic rocks to the west by a high-angle fault that crosses the ridge at the saddle between Nutmoyuk Creek and Death Valley (Till and others, 1986). A sample of a pyrite-fluorite vein in calc-silicate rock here contained 0.5 ppm Au (Gamble, 1988).
  • 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

Comments on exploration

  • Status = Inactive

Mining district

District name Koyuk

Comments on the workings information

  • Workings / Exploration = It is not known it exploration activities have been undertaken here. Mining claims existed in the area in 1975 (see BN086).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF BN123

Bibliographic references

  • Deposit

    Till, A.B., Dumoulin, J.A., Gamble, B. ., Kaufman, D.S., and Carroll, P.I., 1986, Preliminary geologic map and fossil data, Soloman, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 86-276, 10 p., 3 plates, scale 1:250,000.

  • 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 = Gamble, 1988

General comments

Subject category Comment text
Deposit Model Name = Quartz and fluorite vein in calc-silicate rock

Reporter information

Type Date Name Affiliation Comment
Reporter 15-MAR-99 Travis L. Hudson Applied Geology