mineral
Hematite
Iron(III) 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 or reddish-brown color, and a distinctive reddish-brown streak. It crystallizes in the trigonal 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 or reddish-brown color, and a distinctive reddish-brown streak. It crystallizes in the trigonal system.
Formation & geological history
Forms in diverse environments including hydrothermal veins, sedimentary iron deposits, and as an accessory mineral in igneous rocks, often dating across various major geological eras.
Uses & applications
Primary ore of iron for steel production, used in pigments, radiation shielding, and fashioned into beads, cabochons, and jewelry.
Geological facts
Hematite is the most important ore of iron worldwide and has been used by humans for prehistoric cave paintings and amulets for tens of thousands of years.
Field identification & locations
Easily identified by its heavy weight, metallic luster, and characteristic reddish-brown streak when scratched on unglazed porcelain. Commonly found worldwide, especially in banded iron formations.
