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Chromite
Chemical formula: FeO x Cr2O3
Melting point: 1850oC
Density: 5.1 g/cm3
Hardness (Moh's): 5.5
Luminescence: Non-fluorescent
Crystal system: Cubic
Cell dimensions: a=8.05 A
PDF number: 00-002-1083
ICSD number: 020819
Note: The chromite phase in steel inclusions is similar in appearance to the other spinels. Single phase inclusions CrO3-rich chromite have been observed in chromium-rich steels.