Unknown (east of Abraham Bay)

Occurrence in Alaska, United States with commodities Iron, Copper, Lead

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Commodities
Materials information
Alteration
Nearby scientific data
Economic information about the deposit and operations
Mining district
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10307226
Record type	Site
Current site name	Unknown (east of Abraham Bay)

Geographic coordinates

Geographic coordinates:	-172.82237, 52.84898 (WGS84)
Relative position	This site represents numerous occurrences east of Abraham Bay on Attu Island. Its specific location is not known. The map site is plotted at an elevation of about 1,200 feet and about 3 miles east of Abraham bay, and is probably accurate to within 3 miles.

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

USGS map quadrangles

Seguam NE(quadrangle 1:250,000 scale)

Geographic areas

Country	State
United States	Alaska

Commodities

Commodity	Importance
Iron	Primary
Copper	Secondary
Lead	Secondary

Materials information

Materials	Type of material
Chalcopyrite	Ore
Galena	Ore
Pyrite	Ore

Alteration

(Local) Albite, calcite, iron-oxides, and zeolites (descriptions are not clear and some of these may represent gangue minerals).

Nearby scientific data

(1)	-172.82237, 52.84898	ListMap

Economic information

Comments on the geologic information

Geologic Description = On Attu Island partly oxidized zones of pyrite occur in many rock types, including basalt and andesite flows and pyroclastics (Gates and others, 1971). The zones range in size from small isolated pods a few feet in diameter to broad areas 2 to 3 miles long and one mile wide. Many elongate zones or small, isolated patches trend or are aligned east-west. The pyritic zones are associated with swarms of hornblende-bearing dikes and are rich in pyrite, calcite, albite, and zeolites. Base metals are rare and only a few crystals of chalcopyrite and galena have been noted.
Age = Tertiary or younger.

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	AT001

Bibliographic references

Deposit

Gates, O., Powers, H.A., and Wilcox, R.E., 1971, Geology of the Near Islands, Alaska: U.S. Geological Survey Bulletin 1028-U, 113 p., 3 map sheets, scale 1:63,360.
Deposit

Cobb, E.H., 1980, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in fifteen quadrangles in southwestern and west-central Alaska: U.S. Geological Survey Open-File Report 80-909, 103 p.

Comments on the references

Primary Reference = Gates and others, 1971

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	22-JAN-00	S.H. Pilcher	U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.