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