Unnamed (north of Klehini River)

Occurrence in Alaska, United States with commodity Gold

Geologic information

Identification information

Deposit ID 10002186
MRDS ID A013084
Record type Site
Current site name Unnamed (north of Klehini River)

Geographic coordinates

Geographic coordinates: -136.32214, 59.43974 (WGS84)
Relative position This occurrence is at an elevation of about 1,400 feet approximately 1.6 miles, S71E from the Pleasant Camp border station on the Alaska-British Columbia border. It is in the SE1/4, section 13, T. 28 S., R. 53 E. of the Copper River Meridian. It is defined by sample localities 18 to 21 on figure 2 of Still and others (1984) and sample localities 15, 17 and 18 on figure 5 of Still and others (1987).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Pyrite Ore
Pyrrhotite Ore
Calcite Gangue

Host and associated rocks

  • Host or associated Host
    Stratigraphic age (youngest) Early Jurassic
    Stratigraphic age (oldest) Late Silurian

Nearby scientific data

(1) -136.32214, 59.43974

Comments on the geologic information

  • Geologic Description = This occurrence is defined by several anomalous samples reported by Still and others (1984, 1987). These two reports contain essentially the same data for this area. Metasediments and gossan are noted in the sample descriptions for those grab samples that contained the highest gold values, 0.066 to 0.316 ppm gold. Two sample descriptions are 'felsite with pyrite' and one of these contained 0.013 ppm gold. Another sample was described as 'calcite vein with pyrrhotite' and contained 330 ppm copper. One stream sediment sample contained 0.581 ppm gold.? Bedrock in the area is marble, metasediments and metavolcanics of the Cheetdeekahyu Group of Redman and others (1985). The probable Devonian or Triassic age of these rocks (Gilbert and others, 1987) establishes a maximum age for the mineralization.
  • Age = No older than the probable Devonian or Triassic age of the host rocks (Gilbert and others, 1987).
  • Age = Host rock is Triassic - Devonian.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Probably inactive

Mining district

District name Juneau (Skagway subdistrict)

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A013084
USGS Alaska Resource Data File ARDF SK040

Bibliographic references

  • Deposit

    MacKevett, E.M., Jr., Robertson, E.C., and Winkler, G.R., 1974, Geology of the Skagway B-3 and B-4 quadrangles, southern Alaska: U.S. Geological Survey Professional Paper 832, 33 p.

  • Deposit

    Still, J.C., Weir, K.R., Gilbert, W.G., and Redman, E.C., 1984, Stream-sediment, float, and bedrock sampling in the Porcupine mining area, southeast Alaska: U.S. Bureau of Mines Open-File Report 173-84, 19 p.

  • Deposit

    Redman, E.C., Gilbert, W.G., Jones, B.K., Rosenkrans, D.S., and Hickok, B.D., 1985, Preliminary bedrock-geologic map of the Skagway B-4 Quadrangle: Alaska Division of Geological and Geophysical Surveys Report of Investigations 85-6, 1 sheet, scale 1:40,000.

  • Deposit

    Gilbert, W.G., Burns, L.E., Redman, E.C., and Forbes, R.B., 1987, Preliminary bedrock geology and geochemistry of the Skagway B-3 Quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 87-2, 2 sheets, scale 1:36,200.

  • Deposit

    Still, J.C., Gilbert, W.G., and Forbes, R.B., 1987, Final report of stream sediment, float, and bedrock sampling in the Porcupine mining area, southeast Alaska, 1983-1985: U.S. Bureau of Mines Open-File Report 36-87, 35 p., 8 sheets.

Comments on the references

  • Primary Reference = Still and others, 1984

General comments

Subject category Comment text
Deposit Model Name = Too little information to assign a model type.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-FEB-2001 T.C. Crafford T. Crafford & Associates