Miners River No. 1

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; As; Au; Cu; Pb; Zn
Ore minerals arsenopyrite; chalcopyrite; galena; sphalerite
Gangue minerals calcite; quartz

Geographic location

Quadrangle map, 1:250,000-scale AN
Quadrangle map, 1:63,360-scale A-1
Latitude 61.09
Longitude -147.33
Nearby scientific data Find additional scientific data near this location
Location and accuracy On north-facing slope along an unnamed north-northwest flowing tributary of an eastern fork of Miners River. NW1/4 sec. 33, T. 12 N., R. 12 E., of the Seward Meridian. Accurate within 2,600 ft. Locality A-9 of Jansons and others (1984).

Geologic setting

Geologic description

Sandstone, siltstone, and mudstone of the Tertiary Orca Group are cut by a 450 ft mineralized zone that contains quartz and calcite veinlets. Float rocks found in general area contains sphalerite, galena, arsenopyrite, and chalcopyrite. Three chip samples contained 1.6 to 4.1 ppm Ag and 26 ppm to 0.18 percent As. Selected grab sample contained 4.8 percent Zn, 1.7 percent Pb, 0.5 percent Cu, 55 ppm Ag, 1.7 ppm Au, and 16 percent As (Jansons, 1984).
Geologic map unit (-147.332075776911, 61.089459436425)
Mineral deposit model Polymetallic veins? (Cox and Singer, 1986; model 22c?).
Mineral deposit model number 22c?
Age of mineralization Paleocene or younger; mineralized zone cuts sandstones, siltstones, and mudstones of the Tertiary Orca Group.

Production and reserves

Workings or exploration Jansons and others (1984) reported that three chip samples contain 1.6 to 4.1 ppm Ag and 26 ppm to 0.18 percent As. A selected grab sample contained 4.8 percent Zn, 1.7 percent Pb, 0.5 percent Cu, 55 ppm Ag, 1.7 ppm Au, and 16 percent As. Reportedly low potential for mineral development.
Indication of production None

References

MRDS Number A106201
Reporters D.P. Bickerstaff (USGS contractor); S.W. Huss (USGS)
Last report date 7/30/1998