Know all about Argillite and Arkose properties here. All properties of rocks are important as they define the type of rock and its application. Argillite and Arkose belong to Sedimentary Rocks.Texture of Argillite is Clastic, Polished whereas that of Arkose is Clastic. Argillite appears Rough and Dull and Arkose appears Rough and Dull. The luster of Argillite is waxy and dull while that of Arkose is dull. Argillite is available in dark grey to black, pink, red, white colors whereas Arkose is available in reddish brown colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Arkose are in aquifers, soil conditioner, source of magnesia (mgo), tombstones.