Know all about Oil shale and Mylonite properties here. All properties of rocks are important as they define the type of rock and its application. Oil shale belongs to Sedimentary Rocks while Mylonite belongs to Metamorphic Rocks.Texture of Oil shale is Splintery whereas that of Mylonite is Foliated. Oil shale appears Muddy and Mylonite appears Dull, Banded and Foilated. The luster of Oil shale is dull while that of Mylonite is shiny. Oil shale is available in black, brown, buff, green, grey, red, yellow colors whereas Mylonite is available in black to grey colors. The commercial uses of Oil shale are an oil and gas reservoir and that of Mylonite are creating artwork, gemstone, jewelry.