Using magnetic separation, the titanium ores ilmenite and rutile are removed. In this plant, zircon, rutile and ilmenite are separated from the silica gangue. Common titanium-containing minerals are anatase, brookite, ilmenite, perovskite, rutile, and titanite (sphene). Titanium (ilmenite) extraction was significant, as well as that of zircon and rutile. It is the second largest producer of ilmenite, palladium, rutile and zirconium. Other minor inclusions are sphene, apatite, rutile, zircon, and sphalerite. Generally, it is sourced from ilmenite, rutile, and anatase. Beach sands include the minerals Ilmenite, rutile, zircon and monazite. Rutilated quartz is a variety of quartz which contains acicular (needle-like) inclusions of rutile. The sands on the island contain rutile and zircon. Titanium dioxide occurs in nature as the minerals rutile and anatase. Star sapphires and rubies get their asterism from rutile impurities present. The inclusion is often the mineral rutile, a mineral composed primarily of titanium dioxide. Negotiations for reactivation of rutile and bauxite mining are in progress. Unlike other silica polymorphs, the crystal structure of stishovite resembles that of rutile (TiO).