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Unnamed

Occurrence in Alaska, United States with commodities Gold, Copper
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Geologic information

Identification information

Deposit ID 10001922
MRDS ID A012755
Record type Site
Current site name Unnamed
Alternate or previous names Nesbit Creek ?

Geographic coordinates

Geographic coordinates: -163.83332, 65.15933 (WGS84)
Relative position Smith and Eakin (1911) describe this location as being on the divide between Kingsland and Nugget Creeks. Neither creek is identified on the current topographic map of the area (Bendeleben A-4 quadrangle). However, Nesbit Creek is the main headwater tributary to what is now known as Kingsley Creek. It is assumed that an unnamed east tributary to upper Niukluk River is the creek referred to as Nugget Creek by Smith and Eakin (1911). Therefore, this very approximately located occurrence is assumed to be on the ridge crest between Nesbit Creek and the unnamed tributary to Niukluk River. It is locality 11 of Cobb (1972; MF 417; 1975; OFR 75-429).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore

Alteration

  • (Local) Oxidation.

Host and associated rocks

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

Nearby scientific data

(1) -163.83332, 65.15933
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Comments on the geologic information

  • Geologic Description = Simth and Eakin (1911) report disseminated lenses and stringers of chalcopyrite and its oxidation products, near a contact between schist and limestone (marble). A little gold is also reported. This base metal occurrence, and several others in this part of the Bendeleben A-4 quadrangle, are in high grade metasedimentary rocks that are structurally above or peripheral to the croscutting 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.
  • Age = Cretaceous; this occurrence is probably 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
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Council

Comments on the workings information

  • Workings / Exploration = Some small hand dug prospecting pits may be present.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012755
USGS Alaska Resource Data File ARDF BN108

Bibliographic references

  • Deposit

    Smith, P.S. and Eakin, H.M., 1911, Mineral resources of Alaska 1910: U.S. Geological Survey Bulletin 480, 333 p..

  • Deposit

    Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bendeleben quadrangle, Alaska: U.S. Geological Survey Open-File Report 75-429, 123 p.

  • 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

    Cobb, E.H., 1972, Metallic mineral resources map of the Bendeleben quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-417, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Smith and Eakin, 1911

General comments

Subject category Comment text
Deposit Model Name = Polymetallic veins and disseminations in high grade metamorphic rocks

Reporter information

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