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Showing 1 to 1 of 1 for “"Lignite--North Dakota; Geochemistry--North Dakota; Geology"”.

  1. A survey of 24 elements in North Dakota lignite (Fort Union Group, Paleocene) and possible geologic implications

    … carbonaceous shale, lignitic shale, and lignite samples were collected from western North Dakota for element analysis during May 1978, April 1979, and August 1979. Lignite was collected from the Sentinel Butte Formatlon--Hagel Bed (Oliver and McClean Counties), Beulah-Zap Bed (Mercer …

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