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 …

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 …

Although numerous studies were conducted on coal utilisation processes overall, due to the
recent expansion of the coal industry, processes which involve within the reservoir bares a …

Northeast India has a good deposit of sub-bituminous tertiary coal. The northeast Indian
coals have unusual physico-chemical characteristics such as high sulfur, volatile matter and …

In order to reveal the compound effects of water immersion and pyrite on the microstructure
and spontaneous combustion characteristics of non-caking coal, three coal samples from …

Indonesia's long history of coal exploration and commercial production began> 160 years
ago, when the colonial era Bureau of Mines began the first coal exploration. However, the …

The No. 12 Coal (Late Permian) in the Songzao Coalfield, Chongqing, southwestern China,
is characteristically high in pyrite and some trace elements. It is uniquely deposited directly …

The chemical composition of ambers is highly diverse, characterized by the occurrence of a
variety of terpenoids including: mono-, sesqui-, di-, and triterpenoids. The direct analyses of …

Southeast Asia is replete with Cenozoic sedimentary coal-bearing basins. These basins can
be grouped into five regions: northern Sundaland, southern Sundaland, the Philippine …

Abstract The Barito, Pasir, and Tarakan Basins in Kalimantan Island is the most extensive
coal-bearing sedimentary basin in Indonesia, mined since 1989. The coal is notable in …