mineral
Hematite
Iron Oxide (Fe2O3)
AI-generated identification · may be incorrectHardness of 5.5 to 6.5 on the Mohs scale, metallic to dull luster, steel-gray to black color with a distinctive reddish-brown streak, and trigonal crystal system.
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Physical properties
Hardness of 5.5 to 6.5 on the Mohs scale, metallic to dull luster, steel-gray to black color with a distinctive reddish-brown streak, and trigonal crystal system.
Formation & geological history
Forms in diverse environments including hydrothermal veins, sedimentary iron formations, and volcanic deposits over millions of years.
Uses & applications
Extensively used as an iron ore, in pigments, radiation shielding, and fashioned into polished gemstones, beads, and magnetic therapy items.
Geological facts
Hematite is the most important ore of iron globally and is also found in significant quantities on the planet Mars, giving the Martian surface its characteristic reddish hue.
Field identification & locations
Identified definitively by its characteristic dark reddish-brown streak when scratched unglazed porcelain, high specific gravity, and magnetic response if treated.
