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