Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals chalcopyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale BS
Quadrangle map, 1:63,360-scale D-3
Latitude 59.979
Longitude -148.013
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Whale occurrence is in the NE1/4 of section 26, T. 2 S., R. 8 E., of the Seward Meridian, near the south end of Latouche Island. This is Tysdal's (1978) location 269, and MacKevett and Holloway's (1977) location 13. This location is accurate to within a quarter of a mile.

Geologic setting

Geologic description

The country rock in the vicinity of the occurrence is graywacke and shale of the Tertiary Orca Group (Nelson and others, 1985). The bedding strikes N 75 E and dips west. The mineralization consist of stringers of and disseminated chalcopyrite and bornite within fracture zones that parallel bedding (Schrader and Spencer, 1901).
Geologic map unit (-148.015029801917, 59.9783435387253)
Mineral deposit model Besshi massive sulfide (Cox and Singer, 1986; model 24b).
Mineral deposit model number 24b
Age of mineralization Tertiary or younger; mineralized fractures cut Tertiary Orca Group rocks.

Production and reserves

Indication of production None


MRDS Number A010602
Reporters Jeff A. Huber (Anchorage)
Last report date 1/22/1999