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