Know all about Anorthosite and Pseudotachylite properties here. All properties of rocks are important as they define the type of rock and its application. Anorthosite belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks.Texture of Anorthosite is Foliated, Glassy whereas that of Pseudotachylite is Quench. Anorthosite appears Layered, Banded, Veined and Shiny and Pseudotachylite appears Dull and Soft. The luster of Anorthosite is pearly to subvitreous while that of Pseudotachylite is vitreous. Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors whereas Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Anorthosite are creating artwork, curling and that of Pseudotachylite are creating artwork, gemstone.