Know all about Tachylite and Hyaloclastite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite and Hyaloclastite belong to Igneous Rocks.Texture of Tachylite is Vitreous whereas that of Hyaloclastite is Pyroclastic. Tachylite appears Glassy and Hyaloclastite appears Dull. The luster of Tachylite is resinous while that of Hyaloclastite is dull and grainy. Tachylite is available in black, dark brown colors whereas Hyaloclastite is available in brown, grey, yellow colors. The commercial uses of Tachylite and Hyaloclastite are cemetery markers, creating artwork.