Know all about Pseudotachylite and Basaltic 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 Basaltic Trachyandesite belongs to Igneous Rocks.Texture of Pseudotachylite is Quench whereas that of Basaltic Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Pseudotachylite appears Dull and Soft and Basaltic Trachyandesite appears Dull and Soft. The luster of Pseudotachylite is vitreous while that of Basaltic Trachyandesite is not available. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Basaltic Trachyandesite is available in black, brown, light to dark grey colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Basaltic Trachyandesite are an oil and gas reservoir, commemorative tablets, creating artwork.