Charles Frank

Mine, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals arsenopyrite; gold; pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SV
Quadrangle map, 1:63,360-scale C-2
Latitude 59.563
Longitude -150.587
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Charles Frank mine is located 1.8 miles north of Moss Point on the west shore of the Nuka Bay's North Arm. A caved adit exists just above the high tide line and about 40 feet below the discovery outcrops. This is Cobb's (1972, MF-397) location 22 and Richter's (1970) location 2. This location is accurate to within 300 feet.

Geologic setting

Geologic description

The prospect consists of two quartz-arsenopyrite veins that cut Cretaceous Valdez Group black slate (Richter, 1970). Pilgrim (1933), describes the vein as being 8 to 14 inches wide, it trends N53E and dips 79N. Near the caved portal the black slate strikes N25E and dips 35W. A 60 foot adit was driven N50W where it intersected the vein. A total of 51 feet of drift was driven along the vein eight feet to the southwest and 43 feet to the northeast (Pilgrim, 1933). Grab samples from the dump contained 0.04 ppm gold (Richter, 1970).
Geologic map unit (-150.589100649425, 59.5624166369713)
Mineral deposit model Low-sulfide, Au-quartz vein (Cox and Singer, 1986; model 36a)
Mineral deposit model number 36a
Age of mineralization Tertiary; Boden and others (1991) report other veins in the district are about 55 m.y. old.
Alteration of deposit None reported, although Borden and others (1991) report other veins in the Nuka Bay district show carbonization, sulfidization, sericitization, and silicification of the wall rock adjacent to the veins.

Production and reserves

Workings or exploration A 60 foot adit was driven N50W where it intersected the vein. A total of 51 feet of drift was driven along the vein eight feet to the southwest and 43 feet to the northeast (Pilgrim, 1933). Grab samples from the dump contained 0.04 ppm gold (Richter, 1970).
Indication of production Yes; small
Reserve estimates None.
Production notes An unknown amount of gold was produced between 1931 and 1933 (Pilgrim, 1933).

Additional comments

These prospects are within the Kenai Fjords National Park which is closed to mineral entry.

References