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Manganese Dioxide - MnO₂

Classification: Oxide
Atomic numbers: 25 & 8
Atomic weight: 86.93
Melting point (C):
Boiling point (C):
Density (g/cm3): 4.73-4.86
Refractive index (n=):
Hardness (Mosh-scratch): 2.5-2.5
Crystal structure: Orthorombic-normal: (100) a-pinacoid
Color (solid): Brown black
Cleavage: Basal: (001)