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