ilmenesivät

Ilmenite, also known as ilmenite-magnetite series or titanomagnetite, is a common accessory mineral found in basic to ultrabasic igneous rocks. It is a black or steel-gray mineral with a metallic luster and a high specific gravity. The chemical formula of ilmenite is FeTiO3, which indicates that it is an iron-titanium oxide mineral.

Ilmenite is an important ore mineral for titanium, a metal that is widely used in various industries, including aerospace, chemical, and automotive. The mineral is also a significant source of iron, although it is not as rich in iron as magnetite or hematite.

The name "ilmenite" is derived from the Ilmen Lake region in Russia, where the mineral was first discovered. The mineral is typically found in mafic and ultramafic igneous rocks, such as basalt, gabbro, and peridotite. It can also occur in metamorphic rocks and sedimentary deposits.

Ilmenite has a wide range of applications beyond its use as an ore mineral. It is used in the production of titanium dioxide, which is a white pigment widely used in paints, coatings, and plastics. It is also used in the production of titanium metal, which is used in various high-performance applications. Additionally, ilmenite is used in the production of iron and steel, as well as in the manufacture of ceramics and refractories.

Ilmenite is typically found in the form of crystals, but it can also occur in massive or granular form. It has a hardness of 5-6 on the Mohs scale and a specific gravity of approximately 4.7. It is not generally considered a gemstone, but it can be used as a collector's mineral or in jewelry due to its unique color and luster.