Kaczanowski and Wilson

Prospect, Inactive

Commodities and mineralogy

Main commodities Cu
Other commodities Ag
Ore minerals chalcopyrite; pyrite; pyrrhotite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SR
Quadrangle map, 1:63,360-scale B-3
Latitude 60.3953
Longitude -147.7761
Nearby scientific data Find additional scientific data near this location
Location and accuracy The prospect is located near tidewater on the east side of the most northeasterly arm of Lower Herring Bay. It is in the NE1/4 section 31, T. 4 N., R. 10 E., of the Seward Meridian. This is location 207 Tysdal (1978 [MF-880-A]) and location S-72 of Jansons and others (1984). This location is accurate to within a quarter of a mile.

Geologic setting

Geologic description

The prospect consists of a 3-inch-thick, light-green, siliceous layer in nearly flat-lying pillow basalts that has been penetrated by a 19-foot adit (Kurtak and Jeske, 1986). The siliceous layer is subparallel to the flow direction of the greenstone and contains pyrite, as much as 10 percent pyrrhotite and as much as 1 percent chalcopyrite (Johnson, 1918 [B 662-C, p. 193-220]; Kurtak and Jeske, 1986). The basalt is mapped as Orca Group of early Tertiary age (Nelson and others, 1985; Cobb and Tysdal, 1980). The adit is driven into a west-facing cliff and trends S 65 E. Two samples were collected, one from the cliff and one from the adit. The silicified greenstone sample contained 175 ppm copper and 2.3 ppm silver; the pillow basalt sample contained 78 ppm copper and 0.28 ppm silver (Kurtak and Jeske, 1986).
Geologic map unit (-147.77815152241, 60.3947392553887)
Mineral deposit model Cyprus massive sulfide (Cox and Singer, 1986; model 24a)
Mineral deposit model number 24a
Age of mineralization Tertiary or younger; the mineralization is in rocks of the Orca Group of Tertiary age.

Production and reserves

Workings or exploration Workings consist of a single 19-foot, S 65 E-trending adit driven into a west-facing cliff. Two samples were collected, one from the cliff face and one from the adit. The silicified greenstone sample from the adit contained 175 ppm copper and 2.3 ppm silver; the pillow basalt sample from the cliff face contained 78 ppm copper and 0.28 ppm silver (Kurtak and Jeske, 1986).
Indication of production None

References

References

Reporters Jeff A. Huber and Carol S. Huber (Anchorage)
Last report date 12/7/2001