mineral
Hematite
Iron(III) oxide (Fe2O3)
AI-generated identification · may be incorrectHardness of 5.5 to 6.5 on the Mohs scale. Color ranges from metallic gray to black or earthy red, exhibiting a metallic to dull luster with an amorphous or botryoidal crystal habit.
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Physical properties
Hardness of 5.5 to 6.5 on the Mohs scale. Color ranges from metallic gray to black or earthy red, exhibiting a metallic to dull luster with an amorphous or botryoidal crystal habit.
Formation & geological history
Forms in hydrothermal veins, sedimentary iron deposits, and as volcanic sublimate over millions of years.
Uses & applications
Primary ore of iron for steel production, and used in pigments, polishing compounds, and jewelry.
Geological facts
Hematite is the most important ore of iron on Earth and has been used as a reddish pigment since prehistoric times.
Field identification & locations
Identified by its distinctive reddish-brown streak on unglazed porcelain. Commonly found globally, particularly in banded iron formations.
