mineral
Hematite
Iron(III) oxide (Fe2O3)
AI-generated identification · may be incorrectHardness of 5.5 to 6.5, dark metallic grey to black color, metallic to submetallic luster, and a distinctive reddish-brown streak.
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Physical properties
Hardness of 5.5 to 6.5, dark metallic grey to black color, metallic to submetallic luster, and a distinctive reddish-brown streak.
Formation & geological history
Forms in hydrothermal veins, sedimentary iron deposits, and volcanic environments through oxidation and precipitation processes.
Uses & applications
Primary ore of iron, used in jewelry, decorative carvings, and as a polishing powder (rouge).
Geological facts
Hematite is the most important ore of iron on Earth and has been used by humans for cave paintings dating back over 80,000 years.
Field identification & locations
Easily identified by its heavy weight and unmistakable reddish-brown streak when scratched on unglazed porcelain.
