Unnamed

Prospect, Inactive

Commodities and mineralogy

Main commodities Ag; Au; Cu
Ore minerals arsenopyrite; chalcopyrite; pyrrhotite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale KD
Quadrangle map, 1:63,360-scale D-2
Latitude 57.866
Longitude -152.644
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is located on a small peninsula on the west side of Anton Larsen Bay near a small bay in sec. 2, T. 27 S., R. 21 W., of the Seward Meridian (Rose and Richter, 1967, figure 1, locality 3). Site location is accurate to within a few hundred feet.

Geologic setting

Geologic description

At this location several quartz veins cut granodiorite, strike N. 60 W. and dip 82 southwest. The veins, up to 3 feet in thickness, contain several inches of massive pyrrhotite and minor chalcopyrite. Pyrrhotite is also disseminated throughout the quartz. Parts of the veins are vuggy and parts contain considerable muscovite. A sample collected by Rose and Richter ran trace gold, 0.40 ounce per ton silver, 0.1 percent copper, and trace arsenic. A few small pits have been dug on the veins.
Geologic map unit (-152.646194424389, 57.8652622332436)
Mineral deposit model Chugach-type low-sulfide gold-quartz veins (Bliss, 1992; model 36a.1).
Mineral deposit model number 36a.1
Age of mineralization Tertiary

Production and reserves

Workings or exploration A few small pits have been dug on the exposures.
Indication of production None

Additional comments

Site is on land conveyed to the Koniag Corporation.

References