Soft brown coal
Soft brown coal, commonly known as lignite, is a low-rank type of coal that plays a distinct role in the global energy mix and regional economies. Characterized by high moisture…
Vitrain coal
Vitrain coal occupies a special place in coal petrology and the coal industry. Recognized by its bright, glassy appearance and distinctive banding within coal seams, vitrain is a lithotype that…
Ultra-low-chlorine coal
This article explores the characteristics, distribution, industrial significance and market dynamics of ultra-low-chlorine coal. It explains why low chlorine content in coal is increasingly important for modern industry, where concerns…
Coal for ammonia synthesis
This article explores the role of coal as a feedstock for industrial ammonia synthesis: where such coal is found, how it is mined and processed for chemical use, the technologies…
High-volatile A coal
This article examines the properties, distribution, extraction, economic role and industrial uses of high-volatile A bituminous coal. It explains what distinguishes this rank from other coals, where significant deposits are…
The Role of Coal in Powering the Global South
The Role of Coal in Powering the Global South explores how one of the world’s oldest energy sources remains a driving force in emerging economies. This article examines the distribution…
Carbon-rich hard coal
This article examines the geological nature, distribution, extraction, economic importance and industrial uses of high-carbon hard coal — a group of coals valued for their high fixed carbon content and…
Torrefied coal
This article describes the nature, production, distribution and significance of torrefied coal — an upgraded solid fuel produced by thermal treatment — and explains where feedstocks and conventional coal occur,…
Global Coal Reserves: Which Countries Have the Largest Supplies?
Coal remains one of the most significant sources of energy worldwide, and understanding which countries hold the largest reserves is crucial for both economic and environmental planning. This article delves…









