Luster
Waxy
Vitreous
Pleochroism
Weak
-
Dispersion
0.030.02
0.005
1
👆🏻
Transparency
Translucent, Opaque
Transparent
Refractive Index
1.610-1.6501.584-1.615
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Triclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Birefringence
0.0400.028-0.030
0
0.296
👆🏻
Clarity
Translucent
Transparent