Unnamed (northeast of Ernie Lake)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Zn
Other commodities Fe
Ore minerals magnetite; pyrite; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale WI
Quadrangle map, 1:63,360-scale B-6
Latitude 67.4121
Longitude -152.8739
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is about 3 miles northeast of Ernie Lake. It is at an elevation of about 1,240 meters, about 0.4 mile east-northeast of the center of section 22, T. 30 N., R. 24 W., of the Fairbanks Meridian. The occurrence is the site of sample 57 of Dillon and others (1981 [AOF 133B]). The location is accurate.

Geologic setting

Geologic description

This occurrence consists of magnetite, sphalerite, and pyrite in dark green tactite at the contact of a granite pluton (Dillon and others, 1981 [AOF 133B]). A grab sample from an outcrop of the tactite contains 500 ppm zinc and more than 20% iron. The rocks in the area are mainly Proterozoic(?) granitic rocks, but there is none at this occurrence.
Geologic map unit (-152.876666818891, 67.411630614185)
Mineral deposit model Fe skarn? (Cox and Singer, 1986; model 18d?).
Mineral deposit model number 18d?

Production and reserves

Workings or exploration Only surface sampling.
Indication of production None

References