Know all about Coal and Pyroxenite properties here. All properties of rocks are important as they define the type of rock and its application. Coal belongs to Sedimentary Rocks while Pyroxenite belongs to Igneous Rocks.Texture of Coal is Amorphous, Glassy whereas that of Pyroxenite is Clastic, Granular, Phaneritic, Porphyritic. Coal appears Veined or Pebbled and Pyroxenite appears Layered, Banded, Veined and Shiny. The luster of Coal and Pyroxenite is dull to vitreous to submetallic. Coal is available in black, brown, dark brown, grey, light to dark grey colors whereas Pyroxenite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish 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 Pyroxenite are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.