Know all about Phyllite and Greywacke properties here. All properties of rocks are important as they define the type of rock and its application. Phyllite belongs to Metamorphic Rocks while Greywacke belongs to Sedimentary Rocks.Texture of Phyllite is Phyllitic Sheen, Slaty whereas that of Greywacke is Clastic. Phyllite appears Crinkled or Wavy and Greywacke appears Dull. The luster of Phyllite is phyllitic while that of Greywacke is dull. Phyllite is available in black to grey, light greenish grey colors whereas Greywacke is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates and that of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones.