Know all about Coal and Mugearite properties here. All properties of rocks are important as they define the type of rock and its application. Coal belongs to Sedimentary Rocks while Mugearite belongs to Igneous Rocks.Texture of Coal is Amorphous, Glassy whereas that of Mugearite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Coal appears Veined or Pebbled and Mugearite appears Dull and Soft. The luster of Coal is dull to vitreous to submetallic while that of Mugearite is not available. Coal and Mugearite are available in black, brown, dark brown, grey, light to dark grey 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 Mugearite are creating artwork.