Properties of Ilmenite

Ilmenite is a metallic iron-titanium oxide mineral with the chemical formula (FeTiO3). It is a common ore of titanium, often found in igneous rocks and sediments. Ilmenite is known for its black to brownish-black color, opaque appearance, and metallic luster.

Image of ilmenite mineral
Credit: Rob Lavinsky, iRocks.com - CC-BY-SA-3.0, via Wikimedia Commons

The following table provides a comprehensive list of ilmenite properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).

Note: click on the icon to switch between Metric and Imperial units.

Table of Ilmenite Properties
Physical Properties
Metric
Chemical FormulaFeTiO3
Molar Mass151.725 g/mol
Crystal SystemTrigonal (rhombohedral)
Mohs Hardness5.0 - 5.5
Density4720 - 4780 kg/m3
ColorIron black
DiaphaneityOpaque
LusterSubmetallic
CleavageNone
FractureSubconchoidal
StreakBrownish black
Thermal PropertiesMetric
Melting Point1365 - 1470 °C
Electrical PropertiesMetric
Electrical Resistivity10-3 - 4 Ω·m

Note: unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)

Related Pages
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017.