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