Unnamed (near tributary of Cheeneetnuk River)

Occurrence in Alaska, United States with commodities Zinc, Nickel

Geologic information

Identification information

Deposit ID 10307838
Record type Site
Current site name Unnamed (near tributary of Cheeneetnuk River)

Geographic coordinates

Geographic coordinates: -154.86984, 62.09245 (WGS84)
Relative position This unnamed occurrence is located on the east side of a low hill overlooking an unnamed west-flowing tributary of Cheeneetnuk River; it is at an elevation of 2,050 feet (625 m) in the SE1/4 sec. 12, T. 23 N., R. 31 W., of the Seward Meridian. The occurrence corresponds to map number 98 of Gilbert (1981); his station no. 79WG50.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Zinc Primary
Nickel Secondary

Mineral occurrence model information

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

Nearby scientific data

(1) -154.86984, 62.09245

Comments on the geologic information

  • Geologic Description = This unnamed occurrence is a gossan zone in silty limestone correlative with the Mid-Silurian, Terra Cotta Mountains Sandstone, a unit of the Dillinger subterrane (Bundtzen, Harris, and Gilbert, 1997). No surface dimensions of the mineralized zone are available. One grab sample taken from the gossan contained 2,900 ppm zinc and 180 ppm nickel (Gilbert, 1981).
  • Ore Material = Iron oxides

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name McGrath

Comments on the workings information

  • Workings / Exploration = W.G. Gilbert found the mineralized zone during geologic mapping for the Alaska Division of Geological and Geophysical Surveys in 1979 (Gilbert, 1981). One sample from the gossan contained 2,900 ppm zinc and 180 ppm nickel.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF MG022

Bibliographic references

  • Deposit

    Gilbert, W.G., 1981, Preliminary geologic map of the Cheeneetnuk River area, Alaska: Alaska Division of Geological and Geophysical Surveys Open-File Report 153, 19 pages, 2 sheets, 1:63,360 scale.

  • Deposit

    Bundtzen, T.K., Harris, E.E., and Gilbert, W.G., 1997, Geologic Map of the eastern McGrath quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 97-14, 34 pages, one sheet, scale 1:125,000.

Comments on the references

  • Primary Reference = Gilbert, 1981

General comments

Subject category Comment text
Deposit Model Name = Polymetallic replacement (?) (Cox and Singer, 1986; model 19a).

Reporter information

Type Date Name Affiliation Comment
Reporter 10-DEC-98 T.K. Bundtzen Pacific Rim Geological Consulting