Know all about Argillite and Dacite properties here. All properties of rocks are important as they define the type of rock and its application. Argillite belongs to Sedimentary Rocks while Dacite belongs to Igneous Rocks.Texture of Argillite is Clastic, Polished whereas that of Dacite is Aphanitic to Porphyritic. Argillite appears Rough and Dull and Dacite appears Vesicular. The luster of Argillite is waxy and dull while that of Dacite is subvitreous to dull. Argillite is available in dark grey to black, pink, red, white colors whereas Dacite is available in bluish - grey, brown, grey, light to dark grey colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Dacite are commemorative tablets, creating artwork.