Clarain-rich coal
Clarain-rich coal is a specific lithotype of banded coal that combines distinctive petrographic features with important industrial properties. This article reviews what clarain is, where such coals are found and…
Fusain-rich coal
Fusain-rich coal is a distinctive variety of coal in which fragments of fossil charcoal, known collectively as fusain, are abundant. These coals preserve a record of ancient paleo-wildfires and the…
Coal with high inertinite content
Coal characterized by a high content of inertinite macerals represents a distinct and economically important subset of the world’s coals. These coals carry a record of past environmental conditions, pose…
High-plasticity coal
High-plasticity coal is a specialized type of bituminous coal that plays a critical role in modern heavy industry, especially in the production of metallurgical coke used for iron and steelmaking.…
Low-fluidity coking coal
Low-fluidity coking coal occupies a particular niche within the family of metallurgical coals. It does not flow or swell as much as high-fluidity coals during carbonization, yet it can be…
Semi-soft coking coal
Semi-soft coking coal occupies an important middle ground in the world of metallurgical coals. It is neither the highest-grade hard coking coal used to produce premium blast-furnace coke nor the…
