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