Unnamed (in Sischu Creek valley)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Th; U

Geographic location

Quadrangle map, 1:250,000-scale MD
Quadrangle map, 1:63,360-scale D-1
Latitude 63.98
Longitude -153.15
Nearby scientific data Find additional scientific data near this location
Location and accuracy Occurence is located in Sischu Creek valley at an approximate elevation of 1,000 feet (304 m) in Section 35, T. 17 S., R. 29 E., of the Kateel River Meridian. Location is imprecise and only known to within a one mile (1.6 km) radius.

Geologic setting

Geologic description

Quartz-rhyolite porphyry was found to contain anomalous thorium and uranium. Ore minerals were not identified (Miller and others, 1980; Clautice and others, 1993). Mineralization is inferred to be Early Tertiary, based on isotopic ages from Sischu Volcanic Field (Moll and others, 1980). Miller and others (1980) report up to 16.5 ppm uranium, and 70.4 ppm thorium from grab samples.
Geologic map unit (-153.152369358002, 63.9794354548692)
Mineral deposit model Volcanogenic uranium (Cox and Singer, 1986; model 25f).
Mineral deposit model number 25f
Age of mineralization Inferred to be Early Tertiary, based on isotopic ages from Sischu Volcanic Field (Moll and others, 1980).

Production and reserves

Workings or exploration Miller and others (1980) report up to 16.5 ppm U, and 70.4 ppm Th from grab samples.
Indication of production None
Reserve estimates None.

References