Know all about Pseudotachylite and Mudstone properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite belongs to Metamorphic Rocks while Mudstone belongs to Sedimentary Rocks.Texture of Pseudotachylite is Quench whereas that of Mudstone is Clastic. Pseudotachylite appears Dull and Soft and Mudstone appears Rough and Dull. The luster of Pseudotachylite is vitreous while that of Mudstone is dull. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Mudstone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Mudstone are creating artwork, pottery.