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