Know all about Phyllite and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Phyllite belongs to Metamorphic Rocks while Argillite belongs to Sedimentary Rocks.Texture of Phyllite is Phyllitic Sheen, Slaty whereas that of Argillite is Clastic, Polished. Phyllite appears Crinkled or Wavy and Argillite appears Rough and Dull. The luster of Phyllite is phyllitic while that of Argillite is waxy and dull. Phyllite is available in black to grey, light greenish grey colors whereas Argillite is available in dark grey to black, pink, red, white colors. The commercial uses of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates and that of Argillite are fire resistant, used to manufracture paperweights and bookends.