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“mineral matter”
mineral matter
1. The material in coal from which ash is formed.
2. Material in coal that is not formed from decomposed plant products; that is, minerals that were present in the original plant materials or that were assimilated from extraneous sources; such as, sediments and mineralized water.
2. Material in coal that is not formed from decomposed plant products; that is, minerals that were present in the original plant materials or that were assimilated from extraneous sources; such as, sediments and mineralized water.
Clay, pyrite, and calcite are minerals often present in coal.
(Greek: stone, rock; hard consolidated mineral matter; hard matter formed from mineral and earth material; hard substance that is solid)