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Unnamed (on the western part of Amchitka Island)

Occurrence in Alaska, United States with commodities Iron, Copper, Lead, Zinc
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Geologic information

Identification information

Deposit ID 10308193
Record type Site
Current site name Unnamed (on the western part of Amchitka Island)

Geographic coordinates

Geographic coordinates: -178.80231, 51.59887 (WGS84)
Relative position This site represents various locations on the western one-third of Amchitka Island. Specific locations are not available.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Iron Primary
Copper Secondary
Lead Secondary
Zinc Secondary

Materials information

Materials Type of material
Pyrite Ore

Nearby scientific data

(1) -178.80231, 51.59887
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Comments on the geologic information

  • Geologic Description = Pyritic zones are abundant on the western one-third of Amchitka Island. Pyrite in quantities up to one-third of the volume of the rock occurs in volcanic rock of the Amchitka Formation and in sedimentary rocks of the Banjo Point Formation (Powers, 1960, p. 541). The pyrite mineralization tends to follow zones of fractures of diverse strike. One sample assayed trace copper, lead, and zinc.
  • Age = Tertiary.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Aleutian Islands

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF RI002

Bibliographic references

  • Deposit

    Powers, H.A., Coats, R.R., and Nelson, W.H., 1960, Geology and submarine physiography of Amchitka Island, Alaska: U.S. Geological Survey Bulletin 1028-P, p. 521-554, 1 map sheet, scale 1 inch = 1.5 miles.

Comments on the references

  • Primary Reference = Powers and others, 1960

General comments

Subject category Comment text
Deposit Other Comments = Site is located in Alaska Maritime Natural Wildlife Refuge.

Reporter information

Type Date Name Affiliation Comment
Reporter 24-JAN-00 S.H. Pilcher U.S. Geological Survey