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