Know all about Coal and Andesite properties here. All properties of rocks are important as they define the type of rock and its application. Coal belongs to Sedimentary Rocks while Andesite belongs to Igneous Rocks.Texture of Coal is Amorphous, Glassy whereas that of Andesite is Aphanitic to Porphyritic. Coal appears Veined or Pebbled and Andesite appears Dull and Soft. The luster of Coal is dull to vitreous to submetallic while that of Andesite is vitreous. Coal is available in black, brown, dark brown, grey, light to dark grey colors whereas Andesite is available in bluish - grey, grey, pink, 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 Andesite are commemorative tablets, creating artwork.