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Astrophyllite
Fluorite
Fluorite and Astrophyllite Optical Properties


Optical Properties
Luster
Greasy, Pearly  
Vitreous  
Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow  
-  
Dispersion
0.12  
15
0.01  
99+
Transparency
Translucent  
Transparent, Translucent, Transparent to translucent  
Refractive Index
1.678-1.758  
1.432-1.436  
Optic Character
-  
-  
Crystal System
Triclinic  
cubic  
Birefringence
0.050  
-9999  
Clarity
Translucent  
Transparent  
Benefits >>
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