Luster
Vitreous, Adamantine, Pearly
Adamantine
Pleochroism
-
Very weak
Dispersion
0.010.20
0.005
1
👆🏻
Transparency
-
-
Refractive Index
1.552-1.5622.583-2.741
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
Orthorhombic
Birefringence
0.0090.117
0
0.296
👆🏻
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
-