
mineral
Specular Hematite
Specularite (Iron(III) oxide, Fe2O3)
AI-generated identification · may be incorrectHardness: 5.5-6.5 on Mohs scale; Color: Silver-grey to black with reddish undertones; Luster: Sparkling metallic (specular); Crystal Structure: Trigonal; Cleavage: None, but exhibits parting; Specific Gravity: 5.26.
- Hardness
- 5
- Color
- Silver-grey to black with reddish undertones
- Luster
- Sparkling metallic (specular)
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Physical properties
Hardness: 5.5-6.5 on Mohs scale; Color: Silver-grey to black with reddish undertones; Luster: Sparkling metallic (specular); Crystal Structure: Trigonal; Cleavage: None, but exhibits parting; Specific Gravity: 5.26.
Formation & geological history
Formed in hydrothermal veins, metamorphic rocks, and as a primary mineral in igneous rocks. Often found in Banded Iron Formations (BIFs) dating back 1.8 to 2.4 billion years.
Uses & applications
Primary ore of iron; also used as a heavy media for coal separation, in radiation shielding, and as a popular ornamental stone for jewelry and decorative specimens.
Geological facts
The word 'Hematite' comes from the Greek word 'haima' for blood, due to the blood-red color of the mineral's powder and streak. This specific variety, Specularite, is named for its high reflectivity mirroring small mirrors.
Field identification & locations
Identified by its distinctive metallic glitter and a cherry-red streak when rubbed on unglazed porcelain. Commonly found in major iron-mining districts like the Lake Superior region in the USA, Brazil, and Australia.
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