Etymology:
The word "anthracite" is derived from the Greek words "anthrakos," meaning "coal," and "lithos," meaning "stone."
Meaning:
Anthracite is a type of coal characterized by its high carbon content, low volatility, and high heating value. It is the hardest and most dense type of coal, with a deep black color and a semi-metallic luster.
Origin:
Anthracite forms from the metamorphism of bituminous coal under conditions of extreme heat and pressure. The heat and pressure cause the coal to lose its volatile components, such as hydrogen and oxygen, and become more carbonized. This process results in a coal with a high carbon content and a correspondingly high heating value.
Anthracite deposits are found around the world, but the largest known deposits are located in Pennsylvania, the United States, and the Donets Basin in Ukraine. Other significant deposits are found in China, Russia, Poland, and Vietnam.
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