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 black 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 black color, and a characteristic reddish-brown streak.
Formation & geological history
Forms in hydrothermal veins, sedimentary environments, and as an accessory mineral in igneous rocks over millions of years.
Uses & applications
Primary ore of iron, used in jewelry, decorative carvings, and as a polishing powder (jeweler's rouge).
Geological facts
Hematite is the most abundant iron oxide mineral on Earth and is also found on Mars, giving the planet its reddish hue.
Field identification & locations
Easily identified by its heavy weight and distinct reddish-brown streak when scratched unglazed porcelain. Commonly found worldwide.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Limonite
FeO(OH)•nH2O
mineral
Limonite
FeO(OH)•nH2O
mineral
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Feldspar
Feldspar Group (Tectosilicate, e.g., KAlSi3O8)
mineral