Unnamed (west side of Selatna Hills)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; Cu; Pb
Other commodities Zn
Gangue minerals ferricrete gossan

Geographic location

Quadrangle map, 1:250,000-scale MG
Quadrangle map, 1:63,360-scale B-6
Latitude 62.281
Longitude -155.64
Nearby scientific data Find additional scientific data near this location
Location and accuracy This unnamed occurrence is situated on a bluff and unnamed stream draining the west side of the Selatna Hills about 15 kilometers south of the big bend in the Selatna River at an elevation of 1,350 feet (412 m) in the SE1/4 sec. 6, T. 25 N., R. 34 W., of the Seward Meridian. The reporter visited the site in 1978 (at station nos. 78BT327-329).

Geologic setting

Geologic description

A ferrigenous gossan occurs in a prominent north-south trending, high-angle fault zone on the west side of the Selatna Hills in the southwest McGrath quadrangle. The zone can be traced for about 950 meters along strike and is locally up to 60 meters wide, based on the appearance of ferrigenous seeps and rubble. The high-angle fault juxtaposes siltstone of the Late Cretaceous Kuskokwim Group flysch against axinite-bearing hornfels related to the early Cretaceous (61.0 Ma) Selatna pluton (Solie and others, 1991; Wilson and others, 1998). Three soil samples (78BT327-329) taken along a 150 meter-long line immediately south of the creek average 1.9 ppm silver, 169 ppm copper, 130 ppm lead, and 246 ppm zinc.
Geologic map unit (-155.64233403125, 62.280346804857)
Mineral deposit model Polymetallic vein? (Cox and Singer, 1986; model 22c?).
Mineral deposit model number 22c?
Alteration of deposit Gossan.

Production and reserves

Workings or exploration Four soil samples taken in 1978 along a 500 foot long line immediately south of the creek average 1.9 ppm silver, 169 ppm copper, 130 ppm lead, and 246 ppm zinc (T.K. Bundtzen, unpublished data).
Indication of production None
Reserve estimates None.

References