Know all about Appinite and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Appinite belongs to Igneous Rocks while Argillite belongs to Sedimentary Rocks.Texture of Appinite is Porphyritic whereas that of Argillite is Clastic, Polished. Appinite appears Dull, Banded and Foilated and Argillite appears Rough and Dull. The luster of Appinite is subvitreous to dull while that of Argillite is waxy and dull. Appinite is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors whereas Argillite is available in dark grey to black, pink, red, white colors. The commercial uses of Appinite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner and that of Argillite are fire resistant, used to manufracture paperweights and bookends.