Inorganic chemistry of huminite group macerals in four low-rank coals of the western United States

Conference · Tue Jan 01 04:00:00 EST 1985 · Geol. Soc. Am., Abstr. Programs; (United States)

OSTI ID:6447368

Karner, F R; Kleesattel, D R; Schobert, H H; Huber, T P

Ulminite representative of the Beulah-Zap (BZ) and Hagel (HG) lignites, North Dakota, the Martin Lake (ML) lignite, Texas, and vitrinite of the Rosebud (RB) subbituminous coal, Montana have been analyzed by microprobe. Major differences in maceral chemistry between coals and compositionally distinct maceral types within coals are shown by characteristic analyses given below in weight percent. Comparing the four coals: BZ ulminites have high Na and Fe and low S and total constituents; HG ulminites have high Ca and low Na and S; ML ulminites have low Na and high Mg, S and total constituents; while RB vitrinite has moderate to low values for all elements. Within the coals BZ and HG ulminites tend to occur as either low or high Na+Mg+Ca types; ML ulminite as a low or high Al+Si type and Rb vitrinite types vary from low to high Mg/Al. The chemistry of the huminite group macerals and the bulk compositions of the four coals have striking similarities, including the high Na and low S for BZ, high Ca and low Na and S for HG, and low Na and high S for ML. Ulminite chemical variation between coals and within seams suggests the importance of hydrogeochemical processes during diagenesis.

• Research Organization: Univ. of North Dakota, Grand Forks (USA)
• OSTI ID: 6447368
• Report Number(s): CONF-8510489-
• Conference Information: Journal Name: Geol. Soc. Am., Abstr. Programs; (United States) Journal Volume: 17
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
58 GEOSCIENCES
580400 -- Geochemistry-- (-1989)
BROWN COAL
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHEMISTRY
COAL
COAL DEPOSITS
COAL SEAMS
COMPARATIVE EVALUATIONS
DIAGENESIS
ENERGY SOURCES
FEDERAL REGION VI
FEDERAL REGION VIII
FOSSIL FUELS
FUELS
GEOCHEMISTRY
GEOLOGIC DEPOSITS
LIGNITE
MACERALS
MATERIALS
MINERAL RESOURCES
MONTANA
NORTH AMERICA
NORTH DAKOTA
RESOURCES
SUBBITUMINOUS COAL
TEXAS
USA