Know all about Mylonite and Coal properties here. All properties of rocks are important as they define the type of rock and its application. Mylonite belongs to Metamorphic Rocks while Coal belongs to Sedimentary Rocks.Texture of Mylonite is Foliated whereas that of Coal is Amorphous, Glassy. Mylonite appears Dull, Banded and Foilated and Coal appears Veined or Pebbled. The luster of Mylonite is shiny while that of Coal is dull to vitreous to submetallic. Mylonite is available in black to grey colors whereas Coal is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Mylonite are creating artwork, gemstone, jewelry and that of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.