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Unnamed (upper Niukluk River)

Prospect in Alaska, United States with commodities Copper, Lead
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10308792
MRDS ID A012767
Record type Site
Current site name Unnamed (upper Niukluk River)
Related records 10001933

Geographic coordinates

Geographic coordinates: -163.87833, 65.19933 (WGS84)
Relative position This prospect is on the same ridge as BN130 but about 1,500 feet downslope to the west at an elevation of about 1,750 feet.

Site location context

Political divisions (FIPS codes)

Nome(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bendeleben A-4(quadrangle 1:63,360 scale)

Bendeleben SE(quadrangle 1:100,000 scale)

Bendeleben C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Nome(hydrologic unit)

Norton Sound(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Lead Primary

Materials information

Materials Type of material
Azurite Ore
Cerussite Ore
Chalcopyrite Ore
Chrysocolla Ore
Galena Ore
Duftite Ore
Limonite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • Silicification; extensive oxidation and secondary mineral development; faulting and gouge development.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Nearby scientific data

(1) -163.87833, 65.19933
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Complex intergrowths of limonite (replacing pyrite and chalcopyrite) and drusy comb-quartz are present in a tabular body of silicified breccia 2 feet-wide. Abundant secondary minerals include malachite, chrysocolla, azurite, cerussite, and duftite(?). This is at the silicified contact between marble and amphibolite schist and there is minor silicified gouge in the breccia. 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 about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Council; Niukluk-Pargon River

Comments on the workings information

  • Workings / Exploration = Shallow prospect pits and short caved adit are present in the area.

Reference information

Bibliographic references

  • Deposit

    Briskey, J.A., 1983, Summary of field observations on Seward Peninsula mineral deposits: U.S. Geological Survey, unpublished administrative report, 34 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.

Comments on the references

  • Primary Reference = Briskey, 1983

General comments

Subject category Comment text
Deposit Model Name = Polymetallic vein (and breccia) in high grade metamorphic rocks (Cox and Singer, 1986; model 22c ?)

Reporter information

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

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.