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 …

On a global scale demand for the products of the extractive industries is ever increasing.
Extraction of the targeted resource results in the concurrent production of a significant …

The material classed as “mineral matter” in coal embraces crystalline mineral materials as
well as a range of inorganic elements that occur in non-crystalline form. This review outlines …

Selenium is an indispensable trace element for humans, however, its release at high
concentrations becomes a major concern for terrestrial and aquatic ecosystems due to its …

Coal, one of the most complex geological materials, consists of organic and mineral matter,
the latter including crystalline minerals, non-crystalline mineraloids, and elements with non …

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 …

The Late Permian coal in the Fusui Coalfield of southern China is characterized by high Fe-
sulfide and organic sulfur contents (2.60 and 2.94%, respectively). Trace elements including …

This paper provides a brief summary of the history, development and variety of applications
of electron microscopy techniques to analyze coals, organic-rich shales, and carbonaceous …

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 …