Idle Claim, Columbia Red Metals Group

Prospect in Alaska, United States with commodities Silver, Arsenic, Copper, Lead, Zinc

Geologic information

Identification information

Deposit ID 10003454
MRDS ID A106211
Record type Site
Current site name Idle Claim, Columbia Red Metals Group

Geographic coordinates

Geographic coordinates: -147.14257, 61.10958 (WGS84)
Relative position 2,000 ft east of the eastern shore of Kadin Lake. Accurate within 1,000 ft. This is locality A-2 of Jansons and others (1984).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Arsenic Primary
Copper Primary
Lead Primary
Zinc Primary

Materials information

Materials Type of material
Arsenopyrite Ore
Chalcopyrite Ore
Galena Ore
Sphalerite Ore

Mineral occurrence model information

Model code 274
USGS model code 36a.1
Deposit model name Low-sulfide Au-quartz vein, Chugach-type
Mark3 model number 26

Nearby scientific data

(1) -147.14257, 61.10958

Comments on the geologic information

  • Geologic Description = Two felsic dikes having chalcopyrite, galena, and sphalerite present in shears. Arsenopyrite occurrs within 1/8 inch veinlets in a 15 ft wide felsic dike (Jansons and others, 1984). The felsic dikes intrude sandstone, siltstone, and mudstone of the Tertiary Orca Group.? the chip samples contained 370 ppm to 2.85 percent Zn, 205 ppm to 0.7 percent Cu, 4.4 ppm to 22 ppm Ag, 200 ppm to 0.22 percent Pb, and 72 ppm to 16.5 percent As (Jansons and others, 1984).
  • Age = Paleocene or younger; the veins cut felsic dikes which intrude sandstone, siltstone, and mudstone of the Tertiary Orca Group.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Prince William Sound

Comments on the production information

  • Production Notes = No reported production.

Comments on the reserve resource information

  • Reserves = Inferred reserves are 350 tons at 2.27 percent Zn (Jansons and others, 1984).

Comments on the workings information

  • Workings / Exploration = Development has included an 80 ft long tunnel and open pits. Chip samples contained 370 ppm to 2.85 percent Zn, 205 ppm to 0.7 percent Cu, 4.4 ppm to 22 ppm Ag, 200 ppm to 0.22 percent Pb, and 72 ppm to 16.5 percent As. Low mineral development potential (Jansons and others, 1984).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A106211
USGS Alaska Resource Data File ARDF AN158

Bibliographic references

  • Deposit

    Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, Southcentral Alaska: U.S. Bureau of Mines Open-File Report 5-84, 218 p., 2 sheets, scale 1:250,000.

Comments on the references

  • Primary Reference = Jansons and others, 1984

General comments

Subject category Comment text
Deposit Model Name = Chugach-type low-sulfide Au-quartz vein ? (Bliss, 1992; model 36a.1 ?)

Reporter information

Type Date Name Affiliation Comment
Reporter 30-JUL-1998 D.P. Bickerstaff U.S. Geological Survey
Reporter 30-JUL-1998 S.W. Huss U.S. Geological Survey