Characterization of the components of lithologic layers of North Dakota lignites

Conference · Tue Jan 01 00:00:00 EST 1985

OSTI ID:5418739

Schobert, H H; Karner, F R; Kleesattel, D R; Olson, E S

Lignites of the northern Great Plains (USA) exhibit distinct lithologic layering. Current geochemical research is directed to characterization of the separable components of the lithologic layers - the lithotypes fusain, vitrain and attritus, and their constituent macerals. The lithotype compositions plotted on a ternary bond equivalence diagram (Battaerd and Evans, 1979) show a relationship between the medium dark, medium light, and dark lithotypes of Victorian brown coal (data from Johns and others, 1984) and attritus and fusain in the lignite. These five lithotypes seem to be related, in the order listed, by increasing loss of cellulose, lignin or both. Furthermore, a linear correlation (r = .85) exists between the percent carbon bond equivalence and aromaticity of the five lithotypes. Work currently in progress seeks to extend the understanding of the geochemical relationships among brown coal and lignite lithotypes. 15 refs., 1 fig., 1 tab.

• Research Organization: North Dakota Univ., Grand Forks (USA). Energy Research Center
• DOE Contract Number: FC21-83FE60181
• OSTI ID: 5418739
• Report Number(s): DOE/FE/60181-116; CONF-851003-5; ON: DE85013126
• Resource Relation: Conference: Conference on coal science, Sydney, Australia, 28 Oct 1985
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL DEPOSITS
LITHOLOGY
BIODEGRADATION
DIAGENESIS
GREAT PLAINS
LIGNITE
LITHOTYPES
MACERALS
MINERALS
OXIDATION
PETROGRAPHY
USA
BROWN COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
MATERIALS
MINERAL RESOURCES
NORTH AMERICA
RESOURCES
010600* - Coal
Lignite
& Peat- Properties & Composition