Unnamed (south of Mathews Dome)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; Au; Zn
Other commodities Pb
Ore minerals pyrite; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale WI
Quadrangle map, 1:63,360-scale B-3
Latitude 67.4437
Longitude -151.4779
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is located about 1.5 miles south of Mathews Dome. It is at near a prominent peak an elevation of about 4,000 feet in the NW1/4 section 12, T. 30 N., R. 18 W., of the Fairbanks Meridian. The location is accurate.

Geologic setting

Geologic description

This occurrence consists of replacement layers or veins of sphalerite and pyrite up to 8 cm thick in an orange-weathering dolomite layer in gray marble (Dillon and others, 1981 [AOF 133B]. A grab sample of the mineralized rock contains 0.40 ppm gold, 2.2 ppm silver, 200 ppm lead, and 10.3% zinc. High values of Mg and Mn were also noted.
Geologic map unit (-151.480646009586, 67.4432480695913)
Mineral deposit model Polymetallic replacement deposit? (Cox and Singer, 1986; model 19a?).
Mineral deposit model number 19a?

Production and reserves

Workings or exploration Only surface sampling.
Indication of production None