Unnamed (near mouth of Simpson Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu; Zn
Ore minerals chalcopyrite; pyrite; pyrrhotite; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale CV
Quadrangle map, 1:63,360-scale C-5
Latitude 60.693
Longitude -145.839
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 100 feet at the head of Simpson Bay near the mouth of Simpson Creek. It is in the SE1/4 sec. 36, T. 13 S., R. 4 W., of the Copper River Meridian. The location is accurate to within 1000 ft. This location is site C-51 in Jansons and others (1984).

Geologic setting

Geologic description

This occurrence consists of sulfide-bearing stream-sediment float samples of slate. Sulfide minerals are chalcopyrite, pyrite, pyrrhotite, and sphalerite (Jansons and others, 1984). Analyses of two grab samples contained 140 ppm and 1.6% Zn, and 35 ppm and 0.16% Cu.
Geologic map unit (-145.840969518274, 60.6924501629018)

Production and reserves

Workings or exploration Area examined by the U.S. Bureau of Mines as part of a mineral evaluation of the Chugach National Forest. Analyses of two grab samples contained 140 ppm and 1.6% Zn, and 35 ppm and 0.16% Cu (Jansons and others, 1984).
Indication of production None

Additional comments

Occurrence is on Chugach Regional Corporation land.

References