Unnamed

Occurrence in Alaska, United States with commodity Copper

Geologic information

Identification information

Deposit ID 10001197
MRDS ID A011908
Record type Site
Current site name Unnamed

Geographic coordinates

Geographic coordinates: -157.22354, 67.61955 (WGS84)
Relative position Located on hill on the west side of Imelyak River in T. 26 N., R. 7 E, Kateel River Meridian. Shown as locality 76 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 Plutonic Rock > Mafic Intrusive Rock

Nearby scientific data

(1) -157.22354, 67.61955

Comments on the geologic information

  • Geologic Description = Malachite, azurite and chalcopyrite in small pods and on fracture surfaces in quartz conglomerate below horizontal thrust fault. May part of a suite of sedimentary rock-hosted base-metal deposits in the Brooks Range; see for example Schmidt (1997, p. 35-65) and Schmidt and Werdon (1993, p. 143).

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 A011908
USGS Alaska Resource Data File ARDF AR058

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.

  • Deposit

    Schmidt, J.M., 1997, Shale-hosted Zn-Pb-Ag and barite deposits of Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska, 1997: Economic Geology Monograph 9, p. 35-65.

  • Deposit

    Schmidt, J.M., and Werdon, M.B., 1993, Clastic-hosted stratiform, vein/breccia and disseminated Zn-Pb-Ag deposits of the northwestern Brooks Range, Alaska; are they different expersions of dewatering of the same source basin? [abs.]: Geological Society of America, Abstracts with Programs, v. 24, p. 143.

Comments on the references

  • Primary Reference = Mayfield and Grybeck, 1978

General comments

Subject category Comment text
Deposit Model Name = Polymetallic vein? see Schmidt, 1996; Schmidt and Werdon, 1993
Deposit Other Comments = Located on lands within the Noatak National Preserve.

Reporter information

Type Date Name Affiliation Comment
Reporter 06-MAY-1997 K.R. Leonard U.S. Geological Survey
Reporter 06-MAY-1997 R.L. Elliott U.S. Geological Survey
Reporter 06-MAY-1997 J.M. Schmidt U.S. Geological Survey
Reporter 06-MAY-1997 S.W. Nelson U.S. Geological Survey