Unnamed (south of lower Michigan Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Zn
Other commodities As
Ore minerals pyrite; sphalerite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale WI
Quadrangle map, 1:63,360-scale B-3
Latitude 67.2801
Longitude -151.2847
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is south of lower Michigan Creek feet about 3 miles east-northeast of the junction of Michigan Creek and Wild River. The occurrence is at an elevation of 1,850 feet about 0.5 mile west-northwest of the center of section 3, T. 28 N., R. 17 W., of the Fairbanks Meridian. The location is accurate.

Geologic setting

Geologic description

This occurrence consists of sulfide-bearing quartz veins and sulfides disseminations in greenschist. Dillon and others (1981, samples 52 and 402 [AOF 133B]) collected two samples of greenschist, one with thin quartz and pyrite veins, and one containing disseminated pyrite and traces of sphalerite in veins. One sample contained 500 ppm arsenic. The rocks in the vicinity consist of metabasite (Dillon and others, 1986).
Geologic map unit (-151.287428043344, 67.2796466254742)

Production and reserves

Workings or exploration Only surface sampling.
Indication of production None

References

MRDS Number A011964

References

Maas, K.M., 1987, Maps summarizing land availability for mineral exploration and development in northern Alaska, 1986: U.S. Bureau of Mines Open-File Report 10-87, 33 quadrangle overlays.
Reporters J.M. Britton (Anchorage)
Last report date 8/9/2002