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