Know all about Nepheline Syenite and Arkose 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 Arkose belongs to Sedimentary Rocks.Texture of Nepheline Syenite is Granular whereas that of Arkose is Clastic. Nepheline Syenite appears Banded and Foilated and Arkose appears Rough and Dull. The luster of Nepheline Syenite is greasy to dull while that of Arkose is dull. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Arkose is available in reddish brown colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Arkose are in aquifers, soil conditioner, source of magnesia (mgo), tombstones.