Know all about Coal and Lignite properties here. All properties of rocks are important as they define the type of rock and its application. Coal and Lignite belong to Sedimentary Rocks.Texture of Coal is Amorphous, Glassy whereas that of Lignite is Amorphous, Glassy. Coal appears Veined or Pebbled and Lignite appears Veined or Pebbled. The luster of Coal and Lignite is dull to vitreous to submetallic. Coal and Lignite are available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Coal and Lignite are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.