Know all about Argillite and Chert properties here. All properties of rocks are important as they define the type of rock and its application. Argillite and Chert belong to Sedimentary Rocks.Texture of Argillite is Clastic, Polished whereas that of Chert is Banded, Rough. Argillite appears Rough and Dull and Chert appears Glassy or Pearly. The luster of Argillite and Chert is waxy and dull. Argillite is available in dark grey to black, pink, red, white colors whereas Chert is available in black, brown, green, grey, red, white colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Chert are creating artwork, gemstone, in fire-starting tools, jewelry, to ignite fire, used in flintlock firearms.