Know all about Nepheline Syenite and Itacolumite 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 Itacolumite belongs to Sedimentary Rocks.Texture of Nepheline Syenite is Granular whereas that of Itacolumite is Clastic, Granular, Rough. Nepheline Syenite appears Banded and Foilated and Itacolumite appears Rough. The luster of Nepheline Syenite is greasy to dull while that of Itacolumite is dull. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Itacolumite is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Itacolumite are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones.