mineral
Hematite
Fe2O3
AI-generated identification · may be incorrectHardness of 5.5 to 6.5, metallic to dull luster, steel-gray to reddish-black 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, metallic to dull luster, steel-gray to reddish-black 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 volcanic sublimation products over millions of years.
Uses & applications
Primary ore of iron for steel production, used in pigments, radiation shielding, and carved into ornamental jewelry and beads.
Geological facts
Hematite is the most important ore of iron on Earth and has even been detected on Mars by spacecraft. Its name derives from the Greek word for blood due to its red streak.
Field identification & locations
Easily identified in the field by its characteristic red-brown streak and heavy weight relative to size. Commonly found worldwide, notably in the Lake Superior region and Brazil.
