Know all about Tachylite and Mudstone properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Mudstone belongs to Sedimentary Rocks.Texture of Tachylite is Vitreous whereas that of Mudstone is Clastic. Tachylite appears Glassy and Mudstone appears Rough and Dull. The luster of Tachylite is resinous while that of Mudstone is dull. Tachylite is available in black, dark brown colors whereas Mudstone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Mudstone are creating artwork, pottery.