mineral

Specular Hematite (Polished Sphere)

Hematite (Alpha Fe2O3)

AI-generated identification · may be incorrect

Hardness: 5.5–6.5 Mohs scale; Color: Metallic grey to black; Luster: Metallic; Crystal Structure: Trigonal; Cleavage: None; Specific Gravity: 5.26

Hardness: 5
Color: Metallic grey to black
Luster: Metallic

Identified May 2, 2026More mineral →

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Physical properties

Hardness: 5.5–6.5 Mohs scale; Color: Metallic grey to black; Luster: Metallic; Crystal Structure: Trigonal; Cleavage: None; Specific Gravity: 5.26

Formation & geological history

Formed in hydrothermal veins, as a result of volcanic activity, or in sedimentary environments as banded iron formations (BIFs) dating back billions of years.

Uses & applications

Primary ore of iron; also used in polishing compounds (jeweler's rouge), protective coatings, jewelry, and metaphysical collecting.

Geological facts

Hematite is known as the 'blood stone' because its streak and powdered form are blood-red, even though the crystal looks black or silver. It is responsible for the red color of Mars' surface.

Field identification & locations

Identify by its high density (feels heavy for its size) and by performing a streak test on unglazed porcelain, which will leave a distinct reddish-brown mark. Commonly found in Brazil, Australia, and the Lake Superior region.