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Ningyoyak Creek, EXP Prospect

Prospect in Alaska, United States with commodity Copper
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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. Mineral occurrence model information
  8. Host and associated rocks
  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 10001193
MRDS ID A011903
Record type Site
Current site name Ningyoyak Creek, EXP Prospect

Geographic coordinates

Geographic coordinates: -156.31356, 67.87958 (WGS84)
Relative position Located on ridge just north of Ningyoyak Creek in T. 29 N., R. 11 E., Kateel River Meridian. Location accurate to within 2000 ft. (600 m). Shown as locality 64 in Mayfield and Grybeck (1978).???

Site location context

Political divisions (FIPS codes)

Northwest Arctic(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ambler River D-1(quadrangle 1:63,360 scale)

Ambler River NE(quadrangle 1:100,000 scale)

Ambler River(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Noatak River(hydrologic unit)

Noatak River-Lisburne Peninsula(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Gates of the Arctic National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Malachite Ore
Calcite Gangue
Quartz Gangue

Mineral occurrence model information

Model code 72
USGS model code 19a
Deposit model name Polymetallic replacement
Mark3 model number 47

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Phyllite
    Rock unit name Hunt Fork Shale; Black Shale, Slate And Phyllite Interbedded With Sandstone, Quartzite & Limestone
    Rock description Hunt Fork Shale; Black Shale, Slate And Phyllite Interbedded With Sandstone, Quartzite & Limestone
    Stratigraphic age (youngest) Late Devonian
    Stratigraphic age (youngest) Late Devonian

Nearby scientific data

(1) -156.31356, 67.87958
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Malachite and chalcopyrite in quartz-carbonate stringers (veins). Deposit crops out within an area 100 ft. by 75 ft. (30 m by 15 m), and is known depth to a depth of 10 ft (3 m)( Degenhart and others, 1978, p. 373-377).

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Noatak

Comments on the workings information

  • Workings / Exploration = Surface workings including trenching. Two rock samples reported by Degenhart and others (1978, p. 381-382), to assay 0.14% and 0.44% Cu respectively.

Reference information

Bibliographic references

  • Deposit

    Degenhart, C.E., Griffis, R.J., McQuat, J.F., and Bigelow, C.G., 1978, Mineral studies of the western Brooks Range performed under contract to the U.S. Bureau of Mines, Contract #JO155089: U.S. Bureau of Mines Open-File Report 103-78, 529 p., 11 sheets.

  • Deposit

    Mayfield, C.F. and Grybeck, D., 1978, Mineral occurrences and resource map of the Ambler river quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-120I, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Mayfield and Grybeck, 1978

General comments

Subject category Comment text
Deposit Model Name = Polymetallic vein (Schmidt and Werdon, 1993)

Reporter information

Type Date Name Affiliation Comment
Reporter 28-APR-1997 K.R. Leonard U.S. Geological Survey
Reporter 28-APR-1997 R.L. Elliott U.S. Geological Survey
Reporter 28-APR-1997 J.M. Schmidt U.S. Geological Survey
Reporter 28-APR-1997 S.W. Nelson U.S. Geological Survey

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.