Rock Identifier
Hematite (Iron(III) oxide (Fe2O3)) — mineral
mineral

Hematite

Iron(III) oxide (Fe2O3)

AI-generated identification · may be incorrect

Hardness of 5.5 to 6.5, metallic to dull luster, reddish-brown streak, and uneven or conchoidal fracture.

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Physical properties

Hardness of 5.5 to 6.5, metallic to dull luster, reddish-brown streak, and uneven or conchoidal fracture.

Formation & geological history

Forms in diverse environments including hydrothermal veins, sedimentary deposits, and volcanic settings over various geological eras.

Uses & applications

Primary ore of iron, used in pigments, radiation shielding, jewelry, and ornamental carvings.

Geological facts

Hematite is the most important ore of iron and is responsible for the red coloration of soils and rocks on Mars.

Field identification & locations

Readily identified in the field by its distinct reddish-brown streak when scratched on unglazed porcelain.