mineral
Hematite
Iron(III) oxide (Fe2O3)
AI-generated identification · may be incorrectMohs hardness of 5.5 to 6.5, metallic to dull luster, steel-gray to reddish-brown color, and a distinct reddish-brown streak. It crystallizes in the trigonal system and exhibits no true cleavage.
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Physical properties
Mohs hardness of 5.5 to 6.5, metallic to dull luster, steel-gray to reddish-brown color, and a distinct reddish-brown streak. It crystallizes in the trigonal system and exhibits no true cleavage.
Formation & geological history
Forms in diverse geological environments, particularly through aqueous processes, hydrothermal veins, and sedimentary deposition over millions of years.
Uses & applications
Primary ore of iron for steel production, widely used in pigments, radiation shielding, and occasionally polished for jewelry or ornamental carvings.
Geological facts
Hematite is the most abundant iron oxide mineral on Earth and is also responsible for the red coloration of the Martian surface soil.
Field identification & locations
Easily identified by its characteristic reddish-brown streak when scratched unglazed porcelain. Found globally, with massive deposits in Australia, Brazil, and the Lake Superior region.
