Unnamed (north of Kiwalik River)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals arsenopyrite; gold; pyrite
Gangue minerals tourmaline

Geographic location

Quadrangle map, 1:250,000-scale CA
Quadrangle map, 1:63,360-scale B-5
Latitude 65.45
Longitude -161.46
Nearby scientific data Find additional scientific data near this location
Location and accuracy The occurrence is located 35 miles southeast of Candle and 1.9 miles southwest of peak 1680 on Weather Ridge. This is in section 25, T. 1 N., R. 14 W., of the Kateel River Meridian. Miller and Elliot (1969), figure 2, sample location 37.

Geologic setting

Geologic description

This occurrence is located adjacent to the mid-Cretaceous Quartz Creek quartz monzonite, a hook-shaped pluton that intrudes Jurassic-Cretaceous andesitic volcanic rocks. The pluton is surrounded by a N 15 W-trending alteration zone about 18 miles long and 2 to 5 miles wide. The altered volcanic rocks are marked by carbonate-quartz replacement, and possibly by tourmaline. A sample of gossan at the contact between quartz monzonite and andesite contained 1 ppm Au, 3,000 ppm As, 300 ppm Cu and 150 ppm Pb (Miller and Elliott, 1969, location 37).
Geologic map unit (-161.462641111877, 65.4493234298134)
Mineral deposit model Sulfides in altered andesite.
Age of mineralization Mid-Cretaceous or younger.
Alteration of deposit Carbonate-quartz replacement and tourmaline?

Production and reserves

Workings or exploration The area has been mapped by the U.S. Geological Survey and examined by various exploration companies.
Indication of production None

Additional comments

This site is one of numerous occurrences of argentiferous galena, sphalerite, pyrite and arsenopyrite in an 18-mile-long, 2- to 5-mile-wide zone of altered andesite surrounding the Quartz Creek quartz monzonite pluton. The altered zone trends N 15 W, across the drainage basins of Quartz Creek and the Kiwalik River.