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 …

Peat depositional environments, the sites where and conditions under which peat
accumulates, significantly influence a resultant coal's physical properties, chemical …

Coal is a complex geologic material composed mainly of organic matter and mineral matter,
the latter including minerals, poorly crystalline mineraloids, and elements associated with …

This article addresses the fundamental difference between coal rank and coal type. While
theoretically settled long ago as being different aspects of coal systems science, the two …

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 …

Aluminum-hydroxide (boehmite)-rich Pennsylvanian coals of high volatile A bituminous rank
were found previously in the Jungar Coalfield, Inner Mongolia, China. This paper reports …

This paper reports the mineralogical and geochemical compositions of the Late Permian C2
and C3 coals (both medium volatile bituminous coal) from the **nde Mine, near Xuanwei in …

Siderite is a common carbonate mineral in coal and usually contains geochemical
indications (elemental associations and isotopic compositions) for sedimentary …

Electron beam microanalysis of coal samples in US Geological Survey (USGS) labs
confirms that As is the most abundant minor constituent in Fe disulfides in coal and that Se …

Critical elements in coal have attracted much attention in recent years as some coals and
coal combustion products may provide an alternative source of these. This paper provides …