North Talus Bay

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cr; Ni
Gangue minerals olivine; pyroxene

Geographic location

Quadrangle map, 1:250,000-scale SR
Quadrangle map, 1:63,360-scale A-6
Latitude 60.0172
Longitude -149.1917
Nearby scientific data Find additional scientific data near this location
Location and accuracy The occurrence is located approximately half a mile northeast of the head of Talus Bay at an elevation of 1,500 feet. It is in the E1/2 section 12, T. 3 S., R. 1 E., of the Seward Meridian. This is location 101 of Tysdal (1978 [MF-880-A]) and location S-188 of Jansons and others (1984). This location is accurate to within a quarter of a mile.

Geologic setting

Geologic description

The occurrence is described as a serpentinized dunite possibly along a shear zone (Tysdal, 1978 [MF-880-A]). Nelson and others (1985) mapped the rock in this area as Valdez Group of Late Cretaceous age. A single grab sample contained 5,000 ppm chromium and 3,000 ppm nickel (Tysdal, 1978 [MF-880-A]).
Geologic map unit (-149.193834899781, 60.0166421659227)
Mineral deposit model Podiform chromite (Cox and Singer, 1986; model 8a)
Mineral deposit model number 8a
Age of mineralization Cretaceous or younger; host rock is rocks of the Valdez Group of Late Cretaceous age.

Production and reserves

Workings or exploration A single grab sample contained 5,000 ppm chromium and 3,000 ppm nickel (Tysdal, 1978 [MF-880-A]).
Indication of production None

References