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