Luster
Vitreous, Silky
Greasy, Vitreous
Pleochroism
-
None
Dispersion
0.030.03
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.581-1.5931.760
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
cubic
Birefringence
0.0100.010-0.014
0
0.296
👆🏻
Clarity
-
TransparentUlrich Henn and Claudio C. Milisenda