Template:Fluorite
From The Gemology Project
Fluorite | |
---|---|
Chemical composition | CaF2
Calcium Fluoride |
Crystal system | cubic |
Habit | octahedral, cubes, interprenatrant twins |
Cleavage | perfect, octahedral |
Fracture | conchoidal |
Hardness | 4 |
Optic nature | isotrope |
Refaction index | 1.434 |
Birefringence | isotrope |
Dispersion | very low, 0.007 |
Specific gravity | 3.18 |
Lustre | poor vitreous |
Fluorescence | bluish-white, purple (LW) |