mineral

Specular Hematite

Specularite (Iron Oxide, Fe2O3)

Hardness: 5.5-6.5; Color: Steel-gray to black with shimmering metallic flakes; Luster: Splendent/Metallic; Crystal structure: Trigonal; Cleavage: None; Specific gravity: 5.26

Hardness: 5
Color: Steel-gray to black with shimmering metallic flakes
Luster: Splendent/Metallic

Identified April 10, 2026More mineral →

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Physical properties

Hardness: 5.5-6.5; Color: Steel-gray to black with shimmering metallic flakes; Luster: Splendent/Metallic; Crystal structure: Trigonal; Cleavage: None; Specific gravity: 5.26

Formation & geological history

Formed through hydrothermal or metamorphic processes, often found in banded iron formations or as a sublimation product in volcanic areas. Can date back to the Precambrian era.

Uses & applications

Primary ore of iron; also used in cosmetics (glitter), jewelry (cabochons), pigment for paints, and as a collector specimen due to its unique sparkle.

Geological facts

Known as 'Specularite' from the Latin 'speculum' (mirror) because it was once used as reflective surfaces. Despite its metallic gray look, it produces a deep reddish-brown streak when rubbed on porcelain.

Field identification & locations

Identify by its sparkling, mica-like appearance combined with a high density (heavy for its size) and a characteristic red-brown streak test. Commonly found in iron-rich mining regions like the Lake Superior district or Brazil.