Know all about Argillite and Basaltic Trachyandesite properties here. All properties of rocks are important as they define the type of rock and its application. Argillite belongs to Sedimentary Rocks while Basaltic Trachyandesite belongs to Igneous Rocks.Texture of Argillite is Clastic, Polished whereas that of Basaltic Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Argillite appears Rough and Dull and Basaltic Trachyandesite appears Dull and Soft. The luster of Argillite is waxy and dull while that of Basaltic Trachyandesite is not available. Argillite is available in dark grey to black, pink, red, white colors whereas Basaltic Trachyandesite 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 Basaltic Trachyandesite are an oil and gas reservoir, commemorative tablets, creating artwork.