Anthracite is a compact variety of coal that is commonly known as Black coal, hard coal and black diamond. It mainly consist of carbon that is between 92.1% to 98%. It burns slowly and gives short, blue, and smokeless flames while burning. There are many producers of Anthracite around the world including Russia, North Korea, Australia and the United States.
To read more about Anthrecite follow this link : http://en.wikipedia.org/wiki/Anthracite