Rutile
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Rutile is an oxide mineral composed of titanium dioxide, the most common natural form of TiO2. Rarer polymorphs of TiO2 are known, including anatase, akaogiite, and brookite.
Rutile in quartz
Milled rutile
Acicular crystals of rutile protruding from a quartz crystal
Ilmenite
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Ilmenite is a titanium-iron oxide mineral with the idealized formula FeTiO3. It is a weakly magnetic black or steel-gray solid. Ilmenite is the most important ore of titanium and the main source of ti
Ilmenite from Miass, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia. 4.5 x 4.3 x 1.5 cm
Ilmenite from Froland, Aust-Agder, Norway; 4.1 × 4.1 × 3.8 cm
Ilmenite and hematite under normal light
Ilmenite and hematite under polarized light