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