Know all about Coal and Lherzolite properties here. All properties of rocks are important as they define the type of rock and its application. Coal belongs to Sedimentary Rocks while Lherzolite belongs to Igneous Rocks.Texture of Coal is Amorphous, Glassy whereas that of Lherzolite is Grenue. Coal appears Veined or Pebbled and Lherzolite appears Glassy, Vesicular and Foilated. The luster of Coal is dull to vitreous to submetallic while that of Lherzolite is subvitreous to dull. Coal is available in black, brown, dark brown, grey, light to dark grey colors whereas Lherzolite is available in black, dark greenish - grey, green, pink, purple 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 Lherzolite are as armour rock for sea walls, source of magnesia (mgo), used in aquariums.