Unnamed (west of Twoday Mountain)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Zn
Ore minerals pyrite; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale WI
Quadrangle map, 1:63,360-scale B-4
Latitude 67.2698
Longitude -151.74
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is between upper Timber and Suckik Creeks, about 5 miles south-southwest of Twoday Mountain. The occurrence is locality 88 of Dillon and others (1981 [AOF 133B]). It is at an elevation of about 3,950 feet, about 0.6 mile south-southeast of the center of section 4, T. 28 N., R. 19 W., of the Fairbanks Meridian. The location is accurate.

Geologic setting

Geologic description

This occurrence consists of banded marble that locally contains layers with 10% sphalerite that replaces pyrite(?) (Dillon, 1981 [AOF 133B]). However, a grab sample from outcrop, contains only 25 ppm Zn and no other anomalous metal values. The rocks in the area are Devonian(?) or older(?), black slate, phyllite, and limestone (Bliss and others, 1988). No other information is available.
Geologic map unit (-151.742732740498, 67.2693394102469)

Production and reserves

Workings or exploration Only surface sampling.
Indication of production None