Know all about Argillite and Charnockite properties here. All properties of rocks are important as they define the type of rock and its application. Argillite belongs to Sedimentary Rocks while Charnockite belongs to Igneous Rocks.Texture of Argillite is Clastic, Polished whereas that of Charnockite is Granular. Argillite appears Rough and Dull and Charnockite appears Veined or Pebbled. The luster of Argillite is waxy and dull while that of Charnockite is not available. Argillite is available in dark grey to black, pink, red, white colors whereas Charnockite is available in black, grey, orange, pink, white colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Charnockite are curling, gemstone, laboratory bench tops, tombstones.