Simple Lithology

coal / kohle

definition A consolidated organic sedimentary material having less than 75% moisture. This category includes low, medium, and high rank coals according to International Classification of In-Seam Coal (United Nations, 1998), thus including lignite. Sapropelic coal is not distinguished in this category from humic coals. Formed from the compaction or induration of variously altered plant remains similar to those of peaty deposits. more like this
narrower anthracite coal
broader coal
bituminous coal
broader coal
broader coal
source Economic commission for Europe, committee on Sustainable Energy- United Nations (ECE-UN), 1998, International Classification of in-Seam Coals: Energy 19, 41 pp. more like this
broader organic rich sedimentary rock
narrower coal
in scheme simplelithology
is primary topic of coal