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