Optical Properties
Luster
Not Available
Vitreous, Resinous
Pleochroism
AbsentWalter Schumann
visible
Dispersion
None
Not Available
Transparency
Transparent, Translucent
Not Available
Refractive Index
1.370-1.470
1.957
Optic Character
Not Available
Not Available
Crystal System
Not Available
Trigonal
Birefringence
Not Available
0.014
Clarity
Transparent
Not Available
