Know all about Oil shale and Syenite 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 Syenite belongs to Igneous Rocks.Texture of Oil shale is Splintery whereas that of Syenite is Earthy. Oil shale appears Muddy and Syenite appears Banded and Foilated. The luster of Oil shale is dull while that of Syenite is subvitreous to dull. Oil shale is available in black, brown, buff, green, grey, red, yellow colors whereas Syenite is available in brown, buff, cream, green, grey, pink, white colors. The commercial uses of Oil shale are an oil and gas reservoir and that of Syenite are cemetery markers, creating artwork.