Optical Properties
Luster
Vitreous, Adamantine, Silky
Not Available
Pleochroism
AbsentWalter Schumann
Strongly dichroicMartin H. Read
Dispersion
0.02
18
0.01
26
Transparency
Transparent, Translucent
Not Available
Refractive Index
1.614-1.636
1.59
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Not Available
Birefringence
0.022
0.004-0.010
Clarity
Transparent
Not Available
