Unnamed (north of the Kuskokwim River)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; Au
Other commodities Zr
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SM
Quadrangle map, 1:63,360-scale C-8
Latitude 61.5728
Longitude -158.71749
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is near the top of hill 951, about 2.6 miles northwest of the village of Napaimiut on the north bank of the Kuskokwim River. The occurrence is in the SW1/4 sec. 9, T. 17 N., R. 52 W., of the Seward Meridian. The location is accurate.

Geologic setting

Geologic description

This occurrence consists of north-northeast striking quartz-gossan veins that occur in an altered olivine basalt dike and in a shear zone that cuts shale and sandstone of the Upper Cretaceous, Kuskokwim Group (Bundtzen and others, 1998). Cady and others (1955) show a lode gold occurrence on the edge of the flood plain of the Kuskokwim River, about 1.0 mile to the south which may be along the same structural trend. Samples from this occurrence contained 9 parts per billion (ppb) gold, 900 ppb silver, and 700 parts per million (ppm) zirconium (Bundtzen and others, 1998) There is no known source for the zirconium.
Geologic map unit (-158.71985578623, 61.5720893808697)
Alteration of deposit Oxidation to a gossan.

Production and reserves

Workings or exploration Cady and others (1955) show a lode gold occurrence on the edge of the flood plain of the Kuskokwim River, about 1.0 mile to the south. The occurrence was sampled by Bundtzen and others (1998).
Indication of production None

References