Know all about Aplite and Coal properties here. All properties of rocks are important as they define the type of rock and its application. Aplite belongs to Igneous Rocks while Coal belongs to Sedimentary Rocks.Texture of Aplite is Granular, Graphic whereas that of Coal is Amorphous, Glassy. Aplite appears Veined or Pebbled and Coal appears Veined or Pebbled. The luster of Aplite is dull to pearly to subvitreous while that of Coal is dull to vitreous to submetallic. Aplite is available in black, grey, orange, pink, white colors whereas Coal is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones and that of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.