Coal, containing all the elements that are present in nature and more than 200 minerals, has
a complex chemical structure, making it one of the most complex geological materials …

Geochemical studies of sulfur in coals comprise several major aspects relating to the nature
and origin of sulfur in coals, including the abundance and distribution of sulfur in coal …

Growing public awareness of the environmental impact of coal combustion has raised
serious concerns about the various hazardous trace elements produced by coal firing …

Volcanic ashes in coal and coal-bearing sequences typically occur as persistent bands
within coal seams (generally as tonsteins, but in a few cases as bentonites, K-bentonites, or …

The Fire Clay coal bed in the Central Appalachian basin region contains a laterally-
persistent tonstein that is found in the coal throughout most of its areal extent. The tonstein …

The kaolinite-group minerals kaolinite, dickite, nacrite, halloysite including its metaform and
their associates allophane and imogolite are phyllosilicates characterized by a rather simple …

This paper reports the geochemical and mineralogical compositions of the Late Permian No.
25 Coal (semi-anthracite) and its host rocks (roof and floor strata) from the Guxu (Gulin …

Determination of the geochemical and mineralogical characteristics of coal can provide
useful information on the geological setting and evolution of coal basins and assist in …

Pyrite may crystallize initially in forms as diverse as framboids or cubes depending upon the
temperatures and pressures. Fluid-rich diagenesis or low-grade metamorphism clearly …

This book is an integrated approach towards the applications of coal (organic) petrology and
discusses the role of this science in the field of coal and coal-related topics. Coal petrology …