Optical Properties
Luster
Pearly, Fibrous, Chatoyant
Vitreous, Resinous
Pleochroism
NilArthur Thomas
Visible: X = yellow; Y = pink; Z = pale pink to colorless
Dispersion
Not Available
Not Available
Transparency
Translucent
Transparent
Refractive Index
1.545-1.560
1.639-1.672
Optic Character
Not Available
Not Available
Crystal System
Triclinic
Orthorhombic
Birefringence
0.009
0.029-0.032
Clarity
Translucent
Transparent
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