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Aluminium Phosphate - AlPO₄

Classification: Phospate
Atomic numbers: 12, 15 & 8
Atomic weight: 121.29
Melting point (C): 1540
Boiling point (C):
Density (g/cm3): 2.57
Refractive index (n=): 1.54-1.57
Hardness (Mosh-scratch): 4-5
Crystal structure: Hexagonal-rhombohedral: (10TT) rhomb
Color (solid): Greyish
Cleavage: (110T)