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