Know all about Trachyandesite and Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite and Porphyry belong to Igneous Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Porphyry is Porphyritic. Trachyandesite appears Dull and Soft and Porphyry appears Dull. The luster of Trachyandesite is earthy while that of Porphyry is dull. Trachyandesite is available in black, brown, light to dark grey colors whereas Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors. The commercial uses of Trachyandesite are creating artwork, pottery and that of Porphyry are creating artwork, gemstone, jewelry.