Wells Bay No. 3

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; As; Pb; Zn
Ore minerals galena; pyrite; pyrrhotite; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale AN
Quadrangle map, 1:63,360-scale A-1
Latitude 61.07
Longitude -147.29
Nearby scientific data Find additional scientific data near this location
Location and accuracy On above glacier feeding the headwaters of the primary drainage into Wells Bay. NE1/4 sec. 3, T. 11 N., R. 12 E., of the Seward Meridian. Accurate within 2,000 ft. Locality A-7 of Jansons and others (1984).

Geologic setting

Geologic description

According to Jansons and others (1984), two 1 to 4 ft wide shear zones cut sandstone, siltstone, and mudstone of the Tertiary Orca Group. The shear zones have been mineralized by sphalerite, galena, pyrite, and pyrrhotite.
Chip, grab, and shallow core samples collected show that the zones contain 93 ppm to 4.6 percent Zn, 32 ppm to 2 percent Pb, 0.6 ppm to 4.6 g/ton Ag, 11 ppm to 1.1 percent As (Jansons and others, 1984).
Geologic map unit (-147.292073881775, 61.0694541606475)
Age of mineralization Paleocene or younger; shear zones cut the sandstone, siltstone, and mudstone of the Tertiary Orca Group.

Production and reserves

Workings or exploration Chip, grab, and shallow core samples collected show that the zones contain 93 ppm to 4.6 percent Zn, 32 ppm to 2 percent Pb, 0.6 ppm to 4.6 g/ton Ag, 11 ppm to 1.1 percent As. Values indicate a low potential for mineral development (Jansons and others, 1984).
Indication of production None

References

MRDS Number A106207
Reporters D.P. Bickerstaff (USGS contractor); S.W. Huss (USGS)
Last report date 7/30/1998