Know all about Tachylite and Schist properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Schist belongs to Metamorphic Rocks.Texture of Tachylite is Vitreous whereas that of Schist is Foliated, Platy. Tachylite appears Glassy and Schist appears Layered and Shiny. The luster of Tachylite is resinous while that of Schist is shiny. Tachylite is available in black, dark brown colors whereas Schist is available in black, blue, brown, dark brown, green, grey, silver colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Schist are used in aquariums, writing slates.