Know all about Phyllite and Coal properties here. All properties of rocks are important as they define the type of rock and its application. Phyllite belongs to Metamorphic Rocks while Coal belongs to Sedimentary Rocks.Texture of Phyllite is Phyllitic Sheen, Slaty whereas that of Coal is Amorphous, Glassy. Phyllite appears Crinkled or Wavy and Coal appears Veined or Pebbled. The luster of Phyllite is phyllitic while that of Coal is dull to vitreous to submetallic. Phyllite is available in black to grey, light greenish grey colors whereas Coal is available in black, brown, dark brown, grey, light to dark grey colors. The commercial uses of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates and that of Coal are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry.