Know all about Soapstone and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Soapstone belongs to Metamorphic Rocks while Argillite belongs to Sedimentary Rocks.Texture of Soapstone is Polished whereas that of Argillite is Clastic, Polished. Soapstone appears Dull, Banded and Foilated and Argillite appears Rough and Dull. The luster of Soapstone is greasy while that of Argillite is waxy and dull. Soapstone is available in black, black to grey, green, grey colors whereas Argillite is available in dark grey to black, pink, red, white colors. The commercial uses of Soapstone are cemetery markers, creating artwork, gemstone, jewelry, manufacture of soap, solvents, dyes, plastics and fibres, production of lime, source of magnesia (mgo) and that of Argillite are fire resistant, used to manufracture paperweights and bookends.