Know all about Basaltic Trachyandesite and Tachylite properties here. All properties of rocks are important as they define the type of rock and its application. Basaltic Trachyandesite and Tachylite belong to Igneous Rocks.Texture of Basaltic Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Tachylite is Vitreous. Basaltic Trachyandesite appears Dull and Soft and Tachylite appears Glassy. The luster of Basaltic Trachyandesite is not available while that of Tachylite is resinous. Basaltic Trachyandesite is available in black, brown, light to dark grey colors whereas Tachylite is available in black, dark brown colors. The commercial uses of Basaltic Trachyandesite are an oil and gas reservoir, commemorative tablets, creating artwork and that of Tachylite are cemetery markers, creating artwork.