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Lignite, often referred to as brown coal
Koderma is one of the districts of Jharkhand which is blessed with abundant natural resources and rich mineral deposits throughout the district. Earlier it was famous for production of world class mica and was known as the Mica Capital of India or Abrakh-Nagri.
Lignite, often referred to as brown coal, is a soft, brown, combustible, sedimentary rock formed from naturally compressed peat. It is considered the lowest rank of coal due to its relatively low heat content. It has a carbon content around 25 to 35 percent