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Nepheline and Datolite Optical Properties


Optical Properties

Luster
Vitreous  
Vitreous, Greasy  

Pleochroism
-  
-  

Dispersion
0.02  
99+
0.01  
99+

Transparency
Transparent  
Transparent, Translucent  

Refractive Index
1.621-1.675  
1.529-1.547  

Optic Character
-  
-  

Crystal System
monoclinic  
Hexagonal  

Birefringence
0.044  
0.003-0.004  

Clarity
Transparent  
Transparent  

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