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Hematite - Fe₂O₃

Classification: Oxide
Atomic numbers: 26 & 8
Atomic weight: 159.68
Melting point (C): 1565
Boiling point (C):
Density (g/cm3): 5.2-5.25
Refractive index (n=): 3.01-2.94
Hardness (Mosh-scratch): 5.5-6.5
Crystal structure: Hexagonal-rhombohedral: (10T1) rhomb
Color (solid): Single crystal: Red/black, massive other: bright red
Cleavage: Basal-parting: (0001), rhomb: (10T1)