Unnamed

Occurrence in Alaska, United States with commodity Copper

Geologic information

Identification information

Deposit ID 10086674
MRDS ID A011904
Record type Site
Current site name Unnamed

Geographic coordinates

Geographic coordinates: -157.04358, 67.86956 (WGS84)
Relative position Located in pass between small, unnamed hills south of the Noatak River in T. 29 N., R. 8 E., Kateel River Meridian. Shown as locality 67 in Mayfield and Grybeck (1978) and is accurate to within 2000 ft. (600 m).????
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Azurite Ore
Chalcopyrite Ore
Malachite Ore

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 > Metasedimentary Rock > Quartzite

Nearby scientific data

(1) -157.04358, 67.86956

Comments on the geologic information

  • Geologic Description = Chalcopyrite, malachite and azurite coat fracture surfaces in quartzite. Nearby occurrences include a small gossan on limestone-phyllite outcrop that contains 1800 ppm Cu and 5 ppm Ag, and a small, malachite-bearing quartz vein that cuts marble.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Noatak

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011904
USGS Alaska Resource Data File ARDF AR065

Bibliographic references

  • 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 = Pollymetallic vein? (see Schmidt and Werdon, 1993, p. 143)
Deposit Other Comments = Occurrence is within Noatak National Preserve.? ?

Reporter information

Type Date Name Affiliation Comment
Reporter 04-MAY-1997 K.R. Leonard U.S. Geological Survey
Reporter 04-MAY-1997 R.L. Elliott U.S. Geological Survey
Reporter 04-MAY-1997 J.M. Schmidt U.S. Geological Survey
Reporter 04-MAY-1997 S.W. Nelson U.S. Geological Survey