Know all about Nepheline Syenite and Marl 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 Marl belongs to Sedimentary Rocks.Texture of Nepheline Syenite is Granular whereas that of Marl is Earthy. Nepheline Syenite appears Banded and Foilated and Marl appears Rough and Dull. The luster of Nepheline Syenite is greasy to dull while that of Marl is dull. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Marl is available in beige, brown, green, grey, white colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Marl are creating artwork, soil conditioner.