Know all about Argillite and Harzburgite properties here. All properties of rocks are important as they define the type of rock and its application. Argillite belongs to Sedimentary Rocks while Harzburgite belongs to Igneous Rocks.Texture of Argillite is Clastic, Polished whereas that of Harzburgite is Phaneritic. Argillite appears Rough and Dull and Harzburgite appears Rough and Shiny. The luster of Argillite is waxy and dull while that of Harzburgite is shiny. Argillite is available in dark grey to black, pink, red, white colors whereas Harzburgite is available in dark greenish - grey colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Harzburgite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.