Know all about Pseudotachylite and Flint properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite belongs to Metamorphic Rocks while Flint belongs to Sedimentary Rocks.Texture of Pseudotachylite is Quench whereas that of Flint is Banded, Rough. Pseudotachylite appears Dull and Soft and Flint appears Glassy or Pearly. The luster of Pseudotachylite and Flint is vitreous. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Flint is available in black, brown, green, grey, red, white colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Flint are creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms.