Know all about Coal and Boninite properties here. All properties of rocks are important as they define the type of rock and its application. Coal belongs to Sedimentary Rocks while Boninite belongs to Igneous Rocks.Texture of Coal is Amorphous, Glassy whereas that of Boninite is Aphanitic to Porphyritic. Coal appears Veined or Pebbled and Boninite appears Dull and Soft. The luster of Coal is dull to vitreous to submetallic while that of Boninite is vitreous. Coal is available in black, brown, dark brown, grey, light to dark grey colors whereas Boninite is available in bluish - grey, brown, colourless, green, 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 Boninite are an oil and gas reservoir, cemetery markers, creating artwork, soil conditioner, source of magnesia (mgo).