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