Know all about Argillite and Epidosite properties here. All properties of rocks are important as they define the type of rock and its application. Argillite belongs to Sedimentary Rocks while Epidosite belongs to Igneous Rocks.Texture of Argillite is Clastic, Polished whereas that of Epidosite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Argillite appears Rough and Dull and Epidosite appears Dull and Soft. The luster of Argillite is waxy and dull while that of Epidosite is not available. Argillite is available in dark grey to black, pink, red, white colors whereas Epidosite is available in black, brown, light to dark grey colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Epidosite are commemorative tablets, creating artwork.