Unnamed (on the western part of Amchitka Island)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Fe
Other commodities Cu; Pb; Zn
Ore minerals pyrite

Geographic location

Quadrangle map, 1:250,000-scale RI
Quadrangle map, 1:63,360-scale B-4
Latitude 51.6
Longitude 178.8
Nearby scientific data Find additional scientific data near this location
Location and accuracy This site represents various locations on the western one-third of Amchitka Island. Specific locations are not available.

Geologic setting

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.
Geologic map unit (-178.802597188528, 51.5985107133868)
Age of mineralization Tertiary.

Production and reserves

Indication of production None

Additional comments

Site is located in Alaska Maritime Natural Wildlife Refuge.

References