mineral
Hematite
Hematite (Fe2O3)
AI-generated identification · may be incorrectHardness: 5.5 to 6.5 on the Mohs scale; Color: Steel-gray, dark gray, silver, or reddish-brown; Luster: Metallic to submetallic, sometimes earthy; Crystal structure: Trigonal; Cleavage: None, exhibits uneven fracture; Specific gravity: 5.3.
- Hardness
- 5
- Color
- Steel-gray, dark gray, silver, or reddish-brown
- Luster
- Metallic to submetallic, sometimes earthy
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Physical properties
Hardness: 5.5 to 6.5 on the Mohs scale; Color: Steel-gray, dark gray, silver, or reddish-brown; Luster: Metallic to submetallic, sometimes earthy; Crystal structure: Trigonal; Cleavage: None, exhibits uneven fracture; Specific gravity: 5.3.
Formation & geological history
Forms in a variety of geological environments, primarily through deposition in aqueous environments, hydrothermal processes, and as a result of magmatic differentiation.
Uses & applications
Primary ore of iron, used in steel production, pigments, radiation shielding, and occasionally polished into jewelry or ornamental carvings.
Geological facts
Hematite is the most important ore of iron. When finely ground, it produces a reddish-brown streak which has been used as a pigment since prehistoric times.
Field identification & locations
Easily identified by its characteristic reddish-brown streak, metallic to earthy luster, and high specific gravity (feels heavy for its size).
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