Template:Zincite
From The Gemology Project
Zincite | |
---|---|
Chemical composition | (Zn,Mn)0 |
Crystal system | Hexagonal |
Habit | Pyramidal (hemihedral); massive |
Cleavage | Perfect on {10-10}; Parting on {0001} |
Fracture | Conchoidal |
Hardness | 4 |
Optic nature | Uniaxial + |
Refractive index | 2.013 – 2.029 |
Specific gravity | 5.66 |
Lustre | Sub-adamantine to resinous |
Fluorescence | Pale yellow (extremely rare) |