Know all about Trachyandesite and Harzburgite properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite and Harzburgite belong to Igneous Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Harzburgite is Phaneritic. Trachyandesite appears Dull and Soft and Harzburgite appears Rough and Shiny. The luster of Trachyandesite is earthy while that of Harzburgite is shiny. Trachyandesite is available in black, brown, light to dark grey colors whereas Harzburgite is available in dark greenish - grey colors. The commercial uses of Trachyandesite are creating artwork, pottery and that of Harzburgite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.