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