Bituminous Coal

Bituminous Coal from Crown Pyramid Mining

By: Crown Pyramid Mining  11-08-2010
Keywords: Bituminous Coal

Bituminous coal is a relatively hard containing a tar-like substance called . It is of higher quality than but of poorer quality than . Bituminous coal is an organic sedimentary rock formed by diagenetic and sub metamorphic compression of bog material. Bituminous coal has been compressed and heated so that its primary constituents are the , , etc. The carbon content of bituminous coal is around 60-80%; the rest is composed of water, air, hydrogen, and , which have not been driven off from the .Bituminous coal is usually black, sometimes dark brown, often with well-defined bands of bright and dull material. Bituminous coal seams are strati graphically identified by the distinctive sequence of bright and dark bands and are classified accordingly as either "dull, bright-banded" or "bright, dull-banded" and so on.

Keywords: Bituminous Coal