Ilmenite
Primary ore of titanium and source of white pigment.
Ilmenite is a titanium-iron(II) oxide mineral with the idealized formula FeTiO3. It is a weakly magnetic black or steel-gray solid and is the most important ore of titanium, serving as the main source of titanium dioxide, which is used as a white pigment in paints, printing inks, fabrics, plastics, paper, sunscreen, food, and cosmetics.
- chemical_formula
- FeTiO3
- crystal_system
- Trigonal
- Mohs_hardness
- 5.6 to 6
- specific_gravity
- 4.7
- color
- Black or steel-gray
- luster
- Submetallic
- primary_use
- Ore of titanium and source of titanium dioxide
Lore & Background
The same mineral was later found in the Ilmensky Mountains near Miass, Russia, and renamed ilmenite. Ilmenite crystallizes in the trigonal system with an ordered derivative of the corundum structure, where Fe2+ and Ti4+ ions occupy alternating layers perpendicular to the trigonal c axis.
Reader's Guide
Ilmenite is the dominant source of titanium dioxide, a critical white pigment used across numerous industries including paints, plastics, paper, and cosmetics. It is also processed to produce titanium metal. Most ilmenite is mined from heavy mineral sands ore deposits, though it also occurs in hard rock sources such as layered intrusions and anorthosite massifs. The mineral forms solid solutions with hematite, geikielite, and pyrophanite, and its magnetic properties vary depending on composition and intergrowths. Major ilmenite deposits are found in South Africa, India, the United States, Canada, Norway, Australia, Ukraine, Russia, and Kazakhstan. The mineral's ability to be converted into synthetic rutile or titaniferous slags makes it versatile for industrial processing, though impurities such as calcium or magnesium can limit its suitability for certain methods.
Did You Know?
- Ilmenite is named after the Ilmensky Mountains in Russia.
- Pure ilmenite is paramagnetic, but solid solutions with hematite can make it weakly ferromagnetic.
- Ilmenite alters to form leucoxene, a fine-grained material enriched to 70% or more TiO2.
- More than 80% of the estimated global production of titanium concentrate comes from processing ilmenite.
Frequently Asked Questions
Who is Ilmenite?
Ilmenite is a weakly magnetic mineral made up of titanium and iron(II) oxide, with the idealized formula FeTiO3. It presents as a black or steel-gray solid with a submetallic luster.
What is Ilmenite's role in the mineral world?
It is the single most important ore of titanium and the primary feedstock for producing titanium dioxide. That white pigment then works its way into paints, printing inks, fabrics, plastics, paper, sunscreen, food additives, and cosmetics.
What are Ilmenite's physical stats?
Ilmenite crystallizes in the trigonal system and measures between 5.6 and 6 on the Mohs hardness scale. Its specific gravity is 4.7, and it shows a submetallic luster.
Why is Ilmenite so important to everyday life?
Because it is the main raw source of titanium dioxide, the white pigment that gives brightness to an enormous range of consumer and industrial products. Without Ilmenite, that ubiquitous white color would lose its principal supply chain.
How does Ilmenite's story end?
Ilmenite is smelted and refined into titanium dioxide, which is then blended into finished goods spanning industrial coatings, textiles, and personal-care items. Its arc concludes as the invisible white pigment coating everything from paper to sunscreen.
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