Unnamed (northwest side of upper Niukluk River)

Occurrence in Alaska, United States with commodities Silver, Copper, Lead, Zinc

Geologic information

Identification information

Deposit ID 10307297
Record type Site
Current site name Unnamed (northwest side of upper Niukluk River)

Geographic coordinates

Geographic coordinates: -163.93333, 65.19933 (WGS84)
Relative position This occurrence is at an elevation of about 1,050 feet along the northwest side of the upper Niukluk River. It is 500 to 1,000 feet upslope of the river. This is locality 85 of Gamble (1988).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Copper Primary
Lead Primary
Zinc Primary

Materials information

Materials Type of material
Copper Ore
Azurite Ore
Malachite Ore
Sphalerite Ore

Alteration

  • (Local) Extensive oxidation of sulfide minerals has occurred.

Nearby scientific data

(1) -163.93333, 65.19933

Comments on the geologic information

  • Geologic Description = Native copper is disseminated in malachite-azurite-sphalerite-rich rock from near a marble-schist contact here. Analytical data reported by Bundzten (1974) shows significant concentrations of Ag, Cu, Pb, and Zn. This locality, and several others in this part of the Bendeleben A-4 quadrangle, are in high grade metamorphic rocks that are structurally above or peripheral to the crosscutting Pargon pluton. The Pargon pluton is mostly granodiorite and assumed to be Cretaceous in age (Till and others, 1986). It was emplaced at shallower depths than the more deep-seated Bendeleben pluton to the east. The metamorphic rocks peripheral to the western Pargon pluton are also intruded by small, felsic dikes and plugs including quartz porphyry and muscovite granite.
  • Age = Cretaceous ; this occurrence may be related to emplacement of the Pargon pluton which is assumed to be Cretaceous in age.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Council

Comments on the workings information

  • Workings / Exploration = No workings are known at this locality.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF BN132

Bibliographic references

  • Deposit

    Bundtzen, T.K., 1974, Geochemistry of parts of the Bendeleben A-6, A-5, A-4, B-5, and B-4 quadrangles, Alaska: Alaska Division of Geological and Geophysical Surveys Open-File report 39, 10 p., 6 oversized tables, 1 map, scale 1:63,360.

  • 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 = Bundzten, 1974

General comments

Subject category Comment text
Deposit Model Name = Base metal mineralization near marble-schist contact

Reporter information

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