mineral

Hematite

Hematite (Fe2O3)

AI-generated identification · may be incorrect

Hardness: 5.5 to 6.5 on Mohs scale. Color: Steel gray, reddish-brown, or black. Luster: Metallic to submetallic or earthy. Crystal structure: Trigonal. Cleavage: None, exhibits parting. Specific gravity: 5.3

Hardness: 5
Color: Steel gray, reddish-brown, or black
Luster: Metallic to submetallic or earthy

Identified August 3, 2026More mineral →

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Physical properties

Formation & geological history

Forms in a variety of environments including hydrothermal veins, sedimentary iron deposits, and as an accessory mineral in igneous rocks, often through the oxidation of iron-rich minerals over billions of years.

Uses & applications

Primary ore of iron used in steel production; also used in pigments, radiation shielding, and for making jewelry and ornamental carvings.

Geological facts

Hematite leaves a characteristic reddish-brown streak when scratched across an unglazed porcelain plate, even when the mineral specimen itself is dark gray or black. Its name derives from the Greek word for blood, 'haima'.

Field identification & locations

Can be identified reliably by its distinct reddish-brown streak, metallic luster on fresh surfaces, and high specific gravity (feels heavy for its size). Commonly found globally in banded iron formations.