Unnamed (west side of Selatna Hills)

Occurrence in Alaska, United States with commodities Silver, Copper, Lead, Zinc

Geologic information

Identification information

Deposit ID 10307830
Record type Site
Current site name Unnamed (west side of Selatna Hills)

Geographic coordinates

Geographic coordinates: -155.64287, 62.28044 (WGS84)
Relative position This unnamed occurrence is situated on a bluff and unnamed stream draining the west side of the Selatna Hills about 15 kilometers south of the big bend in the Selatna River at an elevation of 1,350 feet (412 m) in the SE1/4 sec. 6, T. 25 N., R. 34 W., of the Seward Meridian. The reporter visited the site in 1978 (at station nos. 78BT327-329).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Copper Primary
Lead Primary
Zinc Secondary

Comments on the commodity information

  • Gangue = Ferricrete gossan

Alteration

  • (Local) Gossan.

Mineral occurrence model information

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

Nearby scientific data

(1) -155.64287, 62.28044

Comments on the geologic information

  • Geologic Description = A ferrigenous gossan occurs in a prominent north-south trending, high-angle fault zone on the west side of the Selatna Hills in the southwest McGrath quadrangle. The zone can be traced for about 950 meters along strike and is locally up to 60 meters wide, based on the appearance of ferrigenous seeps and rubble. The high-angle fault juxtaposes siltstone of the Late Cretaceous Kuskokwim Group flysch against axinite-bearing hornfels related to the early Cretaceous (61.0 Ma) Selatna pluton (Solie and others, 1991; Wilson and others, 1998). Three soil samples (78BT327-329) taken along a 150 meter-long line immediately south of the creek average 1.9 ppm silver, 169 ppm copper, 130 ppm lead, and 246 ppm zinc.

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 = Four soil samples taken in 1978 along a 500 foot long line immediately south of the creek average 1.9 ppm silver, 169 ppm copper, 130 ppm lead, and 246 ppm zinc (T.K. Bundtzen, unpublished data).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF MG014

Bibliographic references

  • Deposit

    Solie, D.N., Bundtzen, T.K., and Gilbert, W.G., 1991, K-Ar ages of igneous rocks in the McGrath quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Public Data File Report 160, 17 pages, one sheet, 1:250,000 scale.

  • Deposit

    Wilson, F.H., Dover, J.H., Bradley, D.C., Weber, F.R., Bundtzen, T.K., and Haeussler, P.J., 1998, Geologic map of central (interior) Alaska: U.S. Geological Survey Open-File Report 98-133, 17 p., 2 sheetsm, scale 1:500,000.

Comments on the references

  • Primary Reference = This description

General comments

Subject category Comment text
Deposit Model Name = Polymetallic vein(?) (Cox and Singer, 1986; model 22c).

Reporter information

Type Date Name Affiliation Comment
Reporter 25-NOV-98 T.K. Bundtzen Pacific Rim Geological Consulting