Know all about Gossan and Mudstone properties here. All properties of rocks are important as they define the type of rock and its application. Gossan belongs to Metamorphic Rocks while Mudstone belongs to Sedimentary Rocks.Texture of Gossan is Rough, Sandy whereas that of Mudstone is Clastic. Gossan appears Dull and Banded and Mudstone appears Rough and Dull. The luster of Gossan is metallic while that of Mudstone is dull. Gossan is available in brown, brown- black, gold, green, rust colors whereas Mudstone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Gossan are cemetery markers, commemorative tablets, gemstone and that of Mudstone are creating artwork, pottery.