Template:Sphalerite
From The Gemology Project
Sphalerite | |
---|---|
Chemical composition | (Zn,Fe)S |
Crystal system | Cubic |
Habit | tetrahedral or dodecahedral |
Cleavage | perfect, dodecahedral |
Fracture | edit me |
Hardness | 3.5-4.0 |
Optic nature | isotropic |
Refractive index | 2.368 - 2.371 |
Specific gravity | 3.95-4.10 |
Lustre | Metallic to Vitreous |