mineral

Hematite

Iron(III) oxide (Fe2O3)

AI-generated identification · may be incorrect

Hardness: 5.5-6.5; Color: Steel-gray to black, or reddish-brown; Luster: Metallic to submetallic; Crystal System: Trigonal; Cleavage: None; Specific Gravity: 5.26

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

Identified May 8, 2026More mineral →

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Physical properties

Hardness: 5.5-6.5; Color: Steel-gray to black, or reddish-brown; Luster: Metallic to submetallic; Crystal System: Trigonal; Cleavage: None; Specific Gravity: 5.26

Formation & geological history

Commonly formed in sedimentary environments as a result of precipitation in water, as well as in hydrothermal veins or as an accessory mineral in igneous rocks.

Uses & applications

Primary source of iron ore globally; used in pigments (ochre), jewelry (beads and intaglios), and as a polishing compound (jeweler's rouge).

Geological facts

The name comes from the Greek word 'haimatitis' meaning blood-red, referring to its color when powdered. Hematite is also found in abundance on the planet Mars.

Field identification & locations

Can be identified in the field by its distinct reddish-brown streak when rubbed on a porcelain plate, even if the specimen appears black. It is commonly found in the Lake Superior region of North America, Brazil, and Australia.