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Iron Disulfide - FeS₂

Classification: Sulfide
Atomic numbers: 26 & 16
Atomic weight: 119.97
Melting point (C): 1171
Boiling point (C):
Density (g/cm3): 5.0
Refractive index (n=):
Hardness (Mosh-scratch): 6-6.5
Crystal structure: Isometric-pyritohedral: (100) pseudo-cube, stria
Color (solid): Brass-yellow
Cleavage: Cubic-poor: (100)