Know all about Vogesite and Tachylite properties here. All properties of rocks are important as they define the type of rock and its application. Vogesite and Tachylite belong to Igneous Rocks.Texture of Vogesite is Porphyritic whereas that of Tachylite is Vitreous. Vogesite appears Dull, Banded and Foilated and Tachylite appears Glassy. The luster of Vogesite is subvitreous to dull while that of Tachylite is resinous. Vogesite 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 Vogesite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo) and that of Tachylite are cemetery markers, creating artwork.