mineral
Hematite
Iron(III) oxide (Fe2O3)
AI-generated identification · may be incorrectHardness is 5.5 to 6.5 on the Mohs scale. Color ranges from metallic gray to reddish-brown, with a submetallic to metallic luster and a distinct reddish-brown streak.
Identified More mineral →
Explore Hematite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness is 5.5 to 6.5 on the Mohs scale. Color ranges from metallic gray to reddish-brown, with a submetallic to metallic luster and a distinct reddish-brown streak.
Formation & geological history
Forms in hydrothermal veins, sedimentary iron deposits, and as an accessory mineral in igneous rocks, often through aqueous oxidation processes over geological time scales.
Uses & applications
Primary ore of iron for steel production, used in pigments, polishing compounds, and occasionally carved into jewelry.
Geological facts
Hematite is the most important ore of iron and is also found abundantly on Mars, giving the planet its characteristic reddish hue.
Field identification & locations
Identified reliably by its distinct reddish-brown streak on an unglazed porcelain plate and heavy weight relative to size. Found worldwide.
