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