Trace Elements in West Virginia Coals
Stratigraphic Distribution of Boron (B)
The stratigraphic distribution of Boron (B) reveals low B values in
low volatile bituminous rank coals of the Lower Pennsylvanian (Pocahontas,
New River and lower Kanawha Formations), moderate B abundances in Middle
Pennsylvanian coals of the middle and upper Kanawha Formation and Allegheny
Group and high B abundances in coals of the Conemaugh, Monongahela and
Dunkard Groups. Apparently metamorphism mechanisms that increased
coal rank and lowered volatile matter in West Virginia coals also lower
B contents, resulting in a close relationship between rank (volatile
matter on a moisture, mineral-matter-free basis) and B content.
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