Know all about Appinite and Tachylite properties here. All properties of rocks are important as they define the type of rock and its application. Appinite and Tachylite belong to Igneous Rocks.Texture of Appinite is Porphyritic whereas that of Tachylite is Vitreous. Appinite appears Dull, Banded and Foilated and Tachylite appears Glassy. The luster of Appinite is subvitreous to dull while that of Tachylite is resinous. Appinite is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors whereas Tachylite is available in black, dark brown 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 Tachylite are cemetery markers, creating artwork.