Know all about Nepheline Syenite and Oil shale properties here. All properties of rocks are important as they define the type of rock and its application. Nepheline Syenite belongs to Igneous Rocks while Oil shale belongs to Sedimentary Rocks.Texture of Nepheline Syenite is Granular whereas that of Oil shale is Splintery. Nepheline Syenite appears Banded and Foilated and Oil shale appears Muddy. The luster of Nepheline Syenite is greasy to dull while that of Oil shale is dull. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Oil shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Oil shale are an oil and gas reservoir.