Know all about Argillite and Quartzite properties here. All properties of rocks are important as they define the type of rock and its application. Argillite belongs to Sedimentary Rocks while Quartzite belongs to Metamorphic Rocks.Texture of Argillite is Clastic, Polished whereas that of Quartzite is Foliated, Granular. Argillite appears Rough and Dull and Quartzite appears Lustrous. The luster of Argillite is waxy and dull while that of Quartzite is vitreous. Argillite is available in dark grey to black, pink, red, white colors whereas Quartzite is available in black, blue, brown, green, light grey, purple, white, yellow colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Quartzite are an oil and gas reservoir, as armour rock for sea walls, cemetery markers, commemorative tablets, in aquifers, laboratory bench tops, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones, used in aquariums.