Know all about Pseudotachylite and Vogesite properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite belongs to Metamorphic Rocks while Vogesite belongs to Igneous Rocks.Texture of Pseudotachylite is Quench whereas that of Vogesite is Porphyritic. Pseudotachylite appears Dull and Soft and Vogesite appears Dull, Banded and Foilated. The luster of Pseudotachylite is vitreous while that of Vogesite is subvitreous to dull. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Vogesite is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Vogesite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).