Schrader Bluff Occurrence, Colville District, North Slope Borough, Alaska, USA
Bentonite is used in drilling fluids.
Location: Deposit crops out at Schrader Bluff on the Anaktuvuk River. Deposit is located wthin 1.6 kilometers (1 mi).
Geology: Cretaceous rocks contain bentonite beds as thick as 1.5 meters (5 ft). Beds that appear to be composed of nearly pure bentonite are locally present in the Colville Group and in the Niakogan Tongue of the Chandler Formation and the Ninuluk Formation of the Nanushuk Group. Clasts of bentonite are common in rocks of the Colville Group.
Age: Early and Late Cretaceous
Commodities (Major) - Clay1
Development Status: No
Deposit Model: Lode; volcanogenic
ReferencesCobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in northern Alaska: U.S. Geological Survey Open-File Report 75-628, 106 p. Detterman, R.L., Bickel, R.S., and Gryc, George, 1964, Geology of the Chandler River region, Alaska: U.S. Geological Survey Professional Paper 303E, p. 223-324.
1 entry listed.
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