mineral
Hematite
Iron(III) oxide (Fe2O3)
AI-generated identification · may be incorrectMohs hardness of 5.5 to 6.5, reddish-brown to steel-gray color, metallic to dull luster, and leaves a characteristic red streak.
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Physical properties
Mohs hardness of 5.5 to 6.5, reddish-brown to steel-gray color, metallic to dull luster, and leaves a characteristic red streak.
Formation & geological history
Forms in diverse environments including hydrothermal veins, sedimentary deposits, and volcanic settings, often precipitating from aqueous solutions.
Uses & applications
Primary ore of iron, used in steel production, pigment manufacturing, and polished into ornamental cabochons or beads for jewelry.
Geological facts
Hematite is the most important ore of iron on Earth and has been used by humans as a pigment since prehistoric cave paintings.
Field identification & locations
Easily identified by its distinctive reddish-brown streak on unglazed porcelain and high specific gravity; commonly found worldwide.
