Know all about Alkali Feldspar Granite and Pseudotachylite properties here. All properties of rocks are important as they define the type of rock and its application. Alkali Feldspar Granite belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks.Texture of Alkali Feldspar Granite is Phaneritic whereas that of Pseudotachylite is Quench. Alkali Feldspar Granite appears Veined or Pebbled and Pseudotachylite appears Dull and Soft. The luster of Alkali Feldspar Granite is dull to grainy with sporadic parts pearly and vitreous while that of Pseudotachylite is vitreous. Alkali Feldspar Granite is available in black, grey, orange, pink, white colors whereas Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Alkali Feldspar Granite are curling, gemstone, laboratory bench tops, tombstones and that of Pseudotachylite are creating artwork, gemstone.