Know all about Argillite and Suevite properties here. All properties of rocks are important as they define the type of rock and its application. Argillite belongs to Sedimentary Rocks while Suevite belongs to Metamorphic Rocks.Texture of Argillite is Clastic, Polished whereas that of Suevite is Earthy. Argillite appears Rough and Dull and Suevite appears Banded. The luster of Argillite is waxy and dull while that of Suevite is earthy. Argillite is available in dark grey to black, pink, red, white colors whereas Suevite is available in black, brown, colourless, green, grey, pink colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Suevite are as a feed additive for livestock, gemstone, metallurgical flux, source of magnesia (mgo).