Know all about Gossan and Quartzite properties here. All properties of rocks are important as they define the type of rock and its application. Gossan and Quartzite belong to Metamorphic Rocks.Texture of Gossan is Rough, Sandy whereas that of Quartzite is Foliated, Granular. Gossan appears Dull and Banded and Quartzite appears Lustrous. The luster of Gossan is metallic while that of Quartzite is vitreous. Gossan is available in brown, brown- black, gold, green, rust colors whereas Quartzite is available in black, blue, brown, green, light grey, purple, white, yellow colors. The commercial uses of Gossan are cemetery markers, commemorative tablets, gemstone and that of Quartzite are an oil and gas reservoir, as armour rock for sea walls, cemetery markers, commemorative tablets, in aquifers, laboratory bench tops, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones, used in aquariums.