Luster
Adamantine, Vitreous, Resinous
Vitreous
Pleochroism
-
None
Dispersion
0.060.01
0.005
1
👆🏻
Transparency
Transparent, Translucent
Transparent, Transparent to translucent
Refractive Index
1.803-2.0781.544-1.553
1
3.25
👆🏻
Optic Character
-
-
Crystal System
Orthorhombic
Trigonal
Birefringence
0.2730.009
0
0.296
👆🏻
Clarity
Transparent
Transparent