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