Coal Petrology

Preconditions of the origin of coal seams, processes of transformation of
plant matters into peat – peat mosses, (biochemical phase), the geochemical phase of coal origin – metamorphosis, influences of radioactive elements and overlying rocks. Coalification parameters. The macropetrographical classification
of brown and hard coal, micropetrographical classification of brown and hard
coal, (macerals, maceral groups, intermediate types), microlithotypes. Genetic types of coal – humites, sapropelites, liptobiolites. Physical-mechanical properties
of coal (colour, brightness, fracture, brittleness, density, hardness,
strength). The chemical-technological properties and classification of brown and hard coal. The influence of natural conditions and coal alterations. The evaluation of coke and some carbonaceous matters from the standpoint of coal petrology.