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Unnamed (near Shelter Cove)

Occurrence in Alaska, United States with commodity Gold
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Geologic information

Identification information

Deposit ID 10308348
Record type Site
Current site name Unnamed (near Shelter Cove)

Geographic coordinates

Geographic coordinates: -150.62553, 59.52248 (WGS84)
Relative position Two occurrences are located on the southeast shore of West Arm of Nuka Bay, near the mouth of Beauty Bay. Both occurrences are exposed on the sea cliff. The northern most exposure is a two-foot-wide vein which strikes N80E. The southern occurrence is about 0.3 miles south of the northern exposure and consists of a four-foot-wide zone of quartz and fractured graywacke. This is Cobb's (1972, MF-397) location 18 and Richter's (1970) locations 11 and 12. This location is accurate to within a quarter of a mile.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Arsenopyrite Ore
Gold Ore
Pyrite Ore
Quartz Gangue

Alteration

  • (Local) Clay gouge occurs in the center of the vein and along hanging wall of northern occurrence.

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Nearby scientific data

(1) -150.62553, 59.52248
ListMap

Comments on the geologic information

  • Geologic Description = Both occurrences are in massive graywacke of the Cretaceous Valdez Group (Richter, 1970). The northern most exposure is a two-foot-wide quartz-arsenopyrite vein that strikes N80E. and dips vertically. The vein has a thin clay gouge zone in the center and along the hanging wall margin. A single channel sample assayed 0.02 ppm gold (Richter, 1970). The southern occurrence is a four-foot-wide zone of fractured graywacke with quartz-arsenopyrite lens that varies from 0.5- to 2-feet-thick. A two foot channel sample taken across the widest part of the mineralization contained 0.062 ppm gold (Richter, 1970).
  • Age = Tertiary; Boden and others (1991) report other veins in the district are about 55 m.y. old.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Homer

Comments on the reserve resource information

  • Reserves = None reported.

Comments on the workings information

  • Workings / Exploration = Samples from the southern occurrence assayed 0.62 ppm gold and from the northern occurrence assayed 0.028 ppm gold (Richter, 1970).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF SV027

Bibliographic references

  • Deposit

    Pilgrim, E.R., 1933, Progress of lode mining in interior Alaska, 1932: Alaska Territorial Department of Mines Miscellaneous Report 194, 11 p.

  • Deposit

    Cobb, E.H., 1972, Metallic minerals resources map of the Seldovia quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-397, 1 sheet, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1979, Summary of references to mineral occurrences (other than minerals fuels and construction materials) in the Seldovia quadrangle, Alaska: U.S. Geological Survey Open-file Report 80-87, 47 p.

  • Deposit

    Richter, D.H., 1970, Geology and lode-gold deposits of the Nuka Bay area, Kenai Peninsula, Alaska: U.S. Geological Survey Professional Paper 625-B, p. Bl-B16.

Comments on the references

  • Primary Reference = Richter, 1970

General comments

Subject category Comment text
Deposit Model Name = Low-sulfide, Au-quartz vein (Cox and Singer, 1986; model 36a)
Deposit Other Comments = This prospect is within Kenai Fjords National Park, the area is now closed to mineral entry.

Reporter information

Type Date Name Affiliation Comment
Reporter 09-MAR-99 Jeff A. Huber U.S. Geological Survey