mineral
Hematite
Iron(III) oxide (Fe2O3)
AI-generated identification · may be incorrectMohs hardness of 5.5 to 6.5, metallic to dull earthy luster, reddish-brown streak, and a specific gravity around 5.3.
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Physical properties
Mohs hardness of 5.5 to 6.5, metallic to dull earthy luster, reddish-brown streak, and a specific gravity around 5.3.
Formation & geological history
Forms in diverse geological environments, particularly hydrothermal veins and sedimentary iron deposits, often dating from the Precambrian to recent eras.
Uses & applications
Used primarily as an iron ore, in pigments, and polished for low-cost gemstone jewelry and ornamental carvings.
Geological facts
Hematite is the most important ore of iron globally and is also responsible for the reddish surface color of the planet Mars.
Field identification & locations
Easily identified by its characteristic reddish-brown streak and high density relative to its size; common worldwide in banded iron formations.
