Unnamed (northwest side of upper Niukluk River)

The Unnamed (northwest side of upper Niukluk River) is a zinc, lead, copper, and silver mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Unnamed (northwest side of upper Niukluk River)

Commodity

Primary: Zinc
Primary: Lead
Primary: Copper
Primary: Silver

Location

State: Alaska
District: Council

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Extensive oxidation of sulfide minerals has occurred.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Sphalerite
Ore: Malachite
Ore: Azurite
Ore: Copper

Comments

Comment (Workings): Workings / Exploration = No workings are known at this locality.

Comment (Geology): Age = Cretaceous ; this occurrence may be related to emplacement of the Pargon pluton which is assumed to be Cretaceous in age.

Comment (Reference): Primary Reference = Bundzten, 1974

Comment (Geology): 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.

Comment (Deposit): Model Name = Base metal mineralization near marble-schist contact

Comment (Exploration): Status = Inactive

References

Reference (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.

Reference (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.

Reference (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.

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