Minerals - Hematite

HEMATITE

Category: Mineral
Chemical formula: Iron(III) oxide, Fe2O3, α-Fe2O3
Color: Metallic grey to earthy red
Crystal habit: Tabular to thick crystals
Crystal system: Hexagonal (rhombohedral)
Cleavage: None
Fracture: Uneven to sub-conchoidal
Mohs Scale hardness: 5.5 - 6.5
Luster: Metallic to splendent
Refractive index: Opaque
Pleochroism: None
Streak: Bright red to dark red
Specific gravity: 4.9 - 5.3