Know all about Phyllite and Itacolumite properties here. All properties of rocks are important as they define the type of rock and its application. Phyllite belongs to Metamorphic Rocks while Itacolumite belongs to Sedimentary Rocks.Texture of Phyllite is Phyllitic Sheen, Slaty whereas that of Itacolumite is Clastic, Granular, Rough. Phyllite appears Crinkled or Wavy and Itacolumite appears Rough. The luster of Phyllite is phyllitic while that of Itacolumite is dull. Phyllite is available in black to grey, light greenish grey colors whereas Itacolumite 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 Itacolumite are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones.