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- W223186762 abstract "Lignite-bearing sediments, including the lignite, lignite overburden, and underclay, were sampled from two beds, the Kinneman Creek and the Beulah-Zap, which are part of the Sentinel Butte Formation of North Dakota. These samples were examined to determine the spatial patterns of elemental distribution within the lignite seam, modes of elemental occurrence, and organic/inorganic affinities of the inorganic constituents. The inorganic constituents within lignites from the Fort Union Region have been classified as being very heterogeneous, which leads some investigators to believe that the study of geochemical relationships is futile. The modes of occurrences of the elements are generally similar from one mine to another within the Fort Union Region lignites. The inorganic matter in the lignites is distributed as adsorbed ions on the organic acid groups, coordinated species, detrital minerals, and authigenic minerals. The distribution of elements is determined by natural processes, and, therefore, is expected to be systematic even though complex. The methods for qualitatively identifying the interrelationships of major, minor, and trace elements include examining the spatial patterns of distribution of elements within a stratigraphic sequence, consideration of results of chemical fractionation procedures, and evaluation of organic/inorganic affinities. The spatial pattern of elemental distribution was correlated with themore » chemical fractionation behavior, organic/inorganic affinities, and ionic potentials of elements to infer the association or combination of associations an element may have within these coals. 12 references, 4 tables.« less" @default.
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- W223186762 date "1984-01-01" @default.
- W223186762 modified "2023-09-27" @default.
- W223186762 title "Elemental distribution and association with inorganic and organic components in two North Dakota lignites. [Includes associations affinities]" @default.
- W223186762 hasPublicationYear "1984" @default.
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