Unnamed (near tributary of Cheeneetnuk River)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Zn
Other commodities Ni
Ore minerals iron oxides

Geographic location

Quadrangle map, 1:250,000-scale MG
Quadrangle map, 1:63,360-scale A-4
Latitude 62.093
Longitude -154.867
Nearby scientific data Find additional scientific data near this location
Location and accuracy This unnamed occurrence is located on the east side of a low hill overlooking an unnamed west-flowing tributary of Cheeneetnuk River; it is at an elevation of 2,050 feet (625 m) in the SE1/4 sec. 12, T. 23 N., R. 31 W., of the Seward Meridian. The occurrence corresponds to map number 98 of Gilbert (1981); his station no. 79WG50.

Geologic setting

Geologic description

This unnamed occurrence is a gossan zone in silty limestone correlative with the Mid-Silurian, Terra Cotta Mountains Sandstone, a unit of the Dillinger subterrane (Bundtzen, Harris, and Gilbert, 1997). No surface dimensions of the mineralized zone are available. One grab sample taken from the gossan contained 2,900 ppm zinc and 180 ppm nickel (Gilbert, 1981).
Geologic map unit (-154.869285627462, 62.0923505856098)
Mineral deposit model Polymetallic replacement? (Cox and Singer, 1986; model 19a?).
Mineral deposit model number 19a?

Production and reserves

Workings or exploration W.G. Gilbert found the mineralized zone during geologic mapping for the Alaska Division of Geological and Geophysical Surveys in 1979 (Gilbert, 1981). One sample from the gossan contained 2,900 ppm zinc and 180 ppm nickel.
Indication of production None
Reserve estimates None.

References