Know all about Argillite and Oil shale properties here. All properties of rocks are important as they define the type of rock and its application. Argillite and Oil shale belong to Sedimentary Rocks.Texture of Argillite is Clastic, Polished whereas that of Oil shale is Splintery. Argillite appears Rough and Dull and Oil shale appears Muddy. The luster of Argillite is waxy and dull while that of Oil shale is dull. Argillite is available in dark grey to black, pink, red, white colors whereas Oil shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Oil shale are an oil and gas reservoir.