Luster
Waxy, Silky, Resinous, Greasy
Vitreous, Greasy
Pleochroism
-
None
Dispersion
0.030.01
0.005
1
👆🏻
Transparency
TranslucentHerve Nicolas Lazzarelli
Translucent
Refractive Index
1.530-1.5751.600-1.627
1
3.25
👆🏻
Optic Character
-
-
Crystal System
-
monoclinic
Birefringence
-99990.027
0
0.296
👆🏻
Clarity
TranslucentHerve Nicolas Lazzarelli
Translucent