Know all about Tachylite and Oolite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Oolite belongs to Sedimentary Rocks.Texture of Tachylite is Vitreous whereas that of Oolite is Clastic or Non-Clastic. Tachylite appears Glassy and Oolite appears Rounded and Rough. The luster of Tachylite is resinous while that of Oolite is pearly to shiny. Tachylite is available in black, dark brown colors whereas Oolite is available in black, blue, brown, cream, green, grey, pink, red, silver, white, yellow colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Oolite are creating artwork, jewelry, used in aquariums.