Unnamed (south of Clem Mountain)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Th; U
Ore minerals uranothorianite
Gangue minerals sphene; zircon

Geographic location

Quadrangle map, 1:250,000-scale CA
Quadrangle map, 1:63,360-scale D-5
Latitude 65.96
Longitude -161.39
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 600 feet in the headwaters of an unnamed tributary of Duck Creek, about 1.4 miles south of Clem Mountain. The map site is in section 34, T. 7 N., R. 13 W., of the Kateel River Meridian. Cobb, 1972 (MF-389), location 21.

Geologic setting

Geologic description

This occurrence consists of Upper Cretaceous-Lower Tertiary granite that may contain uranium-bearing minerals. Uranothorianite was found in a concentrate sample of stream gravels (Gault and others, 1953). The sample contained 0.106% eU.
Geologic map unit (-161.39269580973, 65.959336599726)
Mineral deposit model Uranothorianite in stream sediments.
Age of mineralization Late Cretaceous.

Production and reserves

Workings or exploration In 1947 the U.S. Geological Survey sampled the creek sediment to evaluate its radioactive mineral content (Gault and others, 1953).
Indication of production None

Additional comments

Creek falls approximately 200 feet in headwater mile.