Characteristics related to grain size of rocks are called as texture. Here you can know more about texture of Tuff and Hornfels. Texture of Tuff is Clastic, Pyroclastic whereas that of Hornfels is Granular, Platy. Based on the texture of rocks, they are used for various purposes. Get detailed information about Tuff vs Hornfels texture, color, appearance and maintenance in the next section.