mineral
Hematite
Iron(III) oxide (Fe2O3)
AI-generated identification · may be incorrectHardness of 5.5 to 6.5 on the Mohs scale, reddish-brown to steel-gray color, metallic to dull luster, and leaves a distinct reddish streak.
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Physical properties
Hardness of 5.5 to 6.5 on the Mohs scale, reddish-brown to steel-gray color, metallic to dull luster, and leaves a distinct reddish streak.
Formation & geological history
Forms in diverse environments including hydrothermal veins, sedimentary iron deposits, and volcanic settings over billions of years.
Uses & applications
Primary ore of iron for steel production, used in pigments, radiation shielding, and occasionally polished for jewelry.
Geological facts
Hematite is the most important ore of iron and is also found on Mars, giving the planet its characteristic red surface dust.
Field identification & locations
Easily identified in the field by its reddish-brown streak test and heavy weight relative to its size; common worldwide.
