Know all about Hornfels and Mylonite properties here. All properties of rocks are important as they define the type of rock and its application. Hornfels and Mylonite belong to Metamorphic Rocks.Texture of Hornfels is Granular, Platy whereas that of Mylonite is Foliated. Hornfels appears Dull and Mylonite appears Dull, Banded and Foilated. The luster of Hornfels and Mylonite is shiny. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas Mylonite is available in black to grey colors. The commercial uses of Hornfels are cemetery markers, commemorative tablets, creating artwork and that of Mylonite are creating artwork, gemstone, jewelry.