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Datolite
Ludlamite
Ludlamite and Datolite Optical Properties


Optical Properties
Luster
Vitreous  
Vitreous, Pearly  
Pleochroism
-  
-  
Dispersion
0.02  
99+
0.02  
99+
Transparency
Transparent  
-  
Refractive Index
1.621-1.675  
1.653-1.693  
Optic Character
-  
-  
Crystal System
monoclinic  
monoclinic  
Birefringence
0.044  
0.038-0.044  
Clarity
Transparent  
TransparentUlrich Henn and Claudio C. Milisenda  
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