Optical Properties
Luster
Vitreous, Pearly
Not Available
Pleochroism
Not Available
Weak to moderate; in pale colors.Anthony et al
Dispersion
Not Available
Not Available
Transparency
Not Available
Transparent
Refractive Index
1.490-1.507
1.665-1.667
Optic Character
Not Available
Not Available
Crystal System
Hexagonal
Not Available
Birefringence
0.002-0.012
Not Available
Clarity
Not Available
Transparent
