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Geodes and Apatite Optical Properties


Optical Properties

Luster
Vitreous  
-  

Pleochroism
Blue stones – strong  
-  

Dispersion
0.01  
99+
0.01  
99+

Transparency
-  
-  

Refractive Index
1.628-1.651  
-9999  

Optic Character
-  
-  

Crystal System
Hexagonal  
-  

Birefringence
0.002-0.008  
-9999  

Clarity
TransparentUlrich Henn and Claudio C. Milisenda  
-  

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