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 reddish-brown color, and a characteristic reddish-brown streak.
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Physical properties
Hardness of 5.5 to 6.5 on the Mohs scale, metallic to dull luster, steel-gray to reddish-brown color, and a characteristic reddish-brown streak.
Formation & geological history
Forms in diverse geological environments, particularly hydrothermal veins, sedimentary iron formations, and volcanic deposits over millions of years.
Uses & applications
Primary ore of iron for steel production, and used in jewelry, pigments, and polishing compounds.
Geological facts
Hematite is the most important ore of iron worldwide and is responsible for the red color of Martian dust.
Field identification & locations
Easily identified by its distinctive reddish-brown streak on an unglazed porcelain plate and heavy weight relative to size; found globally.
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