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Caledonite
Spinel
Spinel and Caledonite Optical Properties


Optical Properties
Luster
Vitreous  
Vitreous  
Pleochroism
Weak  
Absent  
Dispersion
0.05  
26
0.02  
99+
Transparency
Transparent  
Transparent, Translucent, Transparent to translucent  
Refractive Index
1.818-1.909  
1.73  
Optic Character
-  
-  
Crystal System
Orthorhombic  
Isometric  
Birefringence
0.091  
-9999  
Clarity
Transparent  
TransparentUlrich Henn and Claudio C. Milisenda  
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