Unnamed Occurrence (ARDF - CA042; tributary to Duck Creek), Fairhaven District, Northwest Arctic Borough, Alaska, USA

Stream gradient approximately 200 feet per mile in lower mile of creek.
Location: This occurrence is along a small, westward-flowing tributary to Duck Creek about 1.5 mile from its junction with that creek. The map site is in section 16, T. 6 N., R. 13 W., of the Kateel River Meridian. Cobb, 1972 (MF-389), location 20.
Geology: Bedrock in the area is undifferentiated Cretaceous granite that may contain uranium-bearing minerals. No outcrops are present at the occurrence. Uranothorianite was identified in a pan concentrate sample of stream gravels (Gault and others, 1953).
Workings: Pan concentrate samples collected and analyzed for uranium content by the U.S. Geological Survey (Gault and others, 1953).

Commodities (Major) - Radioactive minerals
Development Status: None
Deposit Model: Radioactive minerals in stream gravels.

References:
Cobb, E.H., 1972, Metallic mineral resources map of the Candle Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-389, 1 sheet, scale 1:250,000. Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p. Gault, H.R., Killeen, P.L., West, W.S., and others, 1953, Reconnaissance for radioactive deposits in the northeastern part of the Seward Peninsula, Alaska, 1945-47 and 1951: U.S. Geological Survey Circular 250, 31 p.