Wells Bay No. 2

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; As; Au; Cu; Pb
Ore minerals arsenopyrite; galena; pyrite; silver

Geographic location

Quadrangle map, 1:250,000-scale AN
Quadrangle map, 1:63,360-scale A-1
Latitude 61.06
Longitude -147.3
Nearby scientific data Find additional scientific data near this location
Location and accuracy On south-facing slope near headwaters of the primary drainage into Wells Bay. NW1/4 sec. 10, T. 11 N., R. 12 E., of the Seward Meridian. Accurate within 3,000 ft. Locality A-6 of Jansons and others (1984).

Geologic setting

Geologic description

Sandstone, siltstone, and mudstone of the Tertiary Orca Group cut by nine shear zones and a felsic dike. Shear zones are 1 to 20 ft wide and contain massive and disseminated pyrite, arsenopyrite, and galena (Jansons and others, 1984).
Jansons and others (1984) reported five chip samples contained up to 1.1 percent Pb, 0.33 percent Cu, 10.6 ppm Ag and .53 percent As. Grab samples contained up to .5 percent Cu, 1.4 ppm Au, 9 ppm Ag, and 5.1 percent As. Chip sample across felsic dike contained 810 ppm As.
Geologic map unit (-147.302073633649, 61.0594556621711)
Age of mineralization Paleocene or younger; shear zones and a felsic dike cut the sandstone, siltstone, and mudstone of the Tertiary Orca Group.

Production and reserves

Workings or exploration Jansons and others (1984) reported five chip samples contain up to 1.1 percent Pb, 0.33 percent Cu, 10.6 ppm Ag and .53 percent As. Grab samples contain up to .5 percent Cu, 1.4 ppm Au, 9 ppm Ag, and 5.1 percent As. Chip sample across felsic dike contained 810 ppm As. Potential for mineral development is low.
Indication of production None

References

MRDS Number A106206
Reporters D.P. Bickerstaff (USGS contractor); S.W. Huss (USGS)
Last report date 7/30/1998