Rutile is one of the main minerals containing titanium. It is brittle, with a hardness of 6-6.5 and a density of 4.2-4.3g/cm3. Those rich in iron, niobium, and tantalum will increase in density, and the higher ones can reach more than 5.5g/cm3. It can be dissolved in hot phosphoric acid. Adding sodium peroxide after cooling and diluting can turn the solution into yellowish brown (reaction of titanium). Rutile can be produced in gneiss, pegmatite, eclogite (flash) rock mass and placer.

Uses of rutile: Rutile itself is one of the necessary raw materials for high-grade welding electrodes, and it is also the best raw material for producing rutile titanium dioxide. Because of its high-temperature resistance, low-temperature resistance, corrosion resistance, high strength, small specific gravity and other properties. It is widely used in military aviation, aerospace, navigation, machinery, chemical industry, seawater desalination, etc.