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Apatite
Geodes
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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