Know all about Tonalite and Nepheline Syenite properties here. All properties of rocks are important as they define the type of rock and its application. Tonalite and Nepheline Syenite belong to Igneous Rocks.Texture of Tonalite is Phaneritic whereas that of Nepheline Syenite is Granular. Tonalite appears Banded and Foilated and Nepheline Syenite appears Banded and Foilated. The luster of Tonalite is subvitreous to dull while that of Nepheline Syenite is greasy to dull. Tonalite is available in black, brown, light to dark grey, white colors whereas Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors. The commercial uses of Tonalite and Nepheline Syenite are cemetery markers, creating artwork.