Know all about Hornfels and Hyaloclastite properties here. All properties of rocks are important as they define the type of rock and its application. Hornfels belongs to Metamorphic Rocks while Hyaloclastite belongs to Igneous Rocks.Texture of Hornfels is Granular, Platy whereas that of Hyaloclastite is Pyroclastic. Hornfels appears Dull and Hyaloclastite appears Dull. The luster of Hornfels is shiny while that of Hyaloclastite is dull and grainy. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas Hyaloclastite is available in brown, grey, yellow colors. The commercial uses of Hornfels and Hyaloclastite are cemetery markers, commemorative tablets, creating artwork.