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Thulite
Vesuvianite Idocrase
Vesuvianite Idocrase and Thulite Optical Properties


Optical Properties
Luster
Vitreous  
-  
Pleochroism
Present  
-  
Dispersion
0.02  
99+
0.02  
99+
Transparency
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.  
Transparent  
Refractive Index
1.695  
1.700-1.725  
Optic Character
-  
Uniaxial/-  
Crystal System
Orthorhombic  
-  
Birefringence
0.006-0.018  
0.002-0.012  
Clarity
OpaqueHerve Nicolas Lazzarelli  
Transparent  
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