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