nonbanded coal
Quick Summary
Nonbanded coals are a type of coal distinguished by their composition, differing from banded coals. While banded coals have alternating layers of translucent, glossy material (anthraxylon) and duller coal, nonbanded coals contain more than 5 percent anthraxylon. Instead of distinct bands, they are more uniform in appearance.
Two main types of nonbanded coals are recognized: boghead coal, which is rich in algal remains, and cannel coal, characterized by a high proportion of spores within its finely divided matter (attritus). The classification of these coal types can be subjective.1
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