Coal: Its Formation and Composition |
Other editions - View all
Common terms and phrases
alcohol alkalis anthracites anthraxylon attritus bands benzene bituminous coal bogheads brown coals cannel carbon content Carboniferous carbonisation cellulose changes Chem chemical clarain classification coal components coals containing coke colloidal composition compounds conifers COOH cuticles cutin decay decomposition deposits derived destructive distillation dopplerite durain extraction formation formed fractions fungal fusain fusinite groups heat humic acids hydrocarbons hydrogen hydrolysis increase inorganic constituents insoluble layers lignitous coals macerals material metamorphism methods mineral moisture montan wax Nil Nil nitrogen normal obtained opaque matter oxidation oxidising oxygen peat per-hydrous petrological plant debris pollen grains present properties proteins pyridine rational analysis residue Resinite resins samples seam sections Seyler shale showing shown in fig soluble solution solvents spore exines spores structure sub-bituminous sub-bituminous coals sub-hydrous substances sulphur surface Table temperature terpenes Thiessen Top Hard tracheids ulmins vitrain vitrinite volatile matter whilst wood woody xylem yield