mineral
Hematite
Iron(III) oxide (Fe2O3)
AI-generated identification · may be incorrectMohs hardness of 5.5 to 6.5, metallic to dull luster, steel-gray to reddish-brown color, and a characteristic reddish-brown streak.
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Physical properties
Mohs hardness of 5.5 to 6.5, metallic to dull luster, steel-gray to reddish-brown color, and a characteristic reddish-brown streak.
Formation & geological history
Formed in diverse environments including hydrothermal veins, sedimentary deposits, and volcanic settings, often precipitated from water.
Uses & applications
Primary ore of iron, used in jewelry, pigments, and heavy media separation.
Geological facts
Hematite is the most important ore of iron worldwide and is also found on Mars, contributing to the planet's reddish appearance.
Field identification & locations
Identified easily by its heavy weight and distinct reddish-brown streak on unglazed porcelain; commonly found globally in banded iron formations.
