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 …

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 Early Cretaceous Wulantuga high-Ge coal deposit in Inner Mongolia is one of the major
coal-hosted Ge deposits in China. This paper reports new data on the petrological …

The review presented covers:(a) historical introduction;(b) some analytical comments;(c)
some peculiarities of the As geochemistry in environment;(d) an estimation of coal Clarke …

With the aim of better understanding geochemistry of coal, 71 Late Permian whole-seam
coal channel samples from western Guizhou Province, Southwest China were studied and …

Abstract The Lincang Neogene high-Ge coal deposit in Yunnan, southwestern China, is one
of the major coal-hosted Ge deposits in the world. This study reports new data on the …

The concentrations of major and trace inorganic elements in a succession of Permian coals
from the Gunnedah Basin, New South Wales, have been determined by X-ray fluorescence …

Understanding the modes of occurrence of elements in coal is important, not only to help
properly evaluate the impacts of potentially toxic elements on the environment and human …

Arsenic, one of the most hazardous elements occurring in coals, can be released to the
environment during coal processing and combustion. Based on the available literature and …