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