Know all about Oil shale and Mudstone properties here. All properties of rocks are important as they define the type of rock and its application. Oil shale and Mudstone belong to Sedimentary Rocks.Texture of Oil shale is Splintery whereas that of Mudstone is Clastic. Oil shale appears Muddy and Mudstone appears Rough and Dull. The luster of Oil shale and Mudstone is dull. Oil shale is available in black, brown, buff, green, grey, red, yellow colors whereas Mudstone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Oil shale are an oil and gas reservoir and that of Mudstone are creating artwork, pottery.