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