Know all about Argillite and Adakite properties here. All properties of rocks are important as they define the type of rock and its application. Argillite belongs to Sedimentary Rocks while Adakite belongs to Igneous Rocks.Texture of Argillite is Clastic, Polished whereas that of Adakite is Porphyritic. Argillite appears Rough and Dull and Adakite appears Dull and Soft. The luster of Argillite is waxy and dull while that of Adakite is grainy, pearly and vitreous. Argillite is available in dark grey to black, pink, red, white colors whereas Adakite 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 Adakite are commemorative tablets, pottery, used in aquariums.