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Agrellite
Marialite
Marialite and Agrellite Optical Properties


Optical Properties
Luster
Pearly  
Vitreous, Pearly, Resinous  
Pleochroism
colorless.  
-  
Dispersion
0.01  
99+
0.02  
99+
Transparency
-  
Transparent, Translucent  
Refractive Index
1.567  
1.540-1.550  
Optic Character
-  
-  
Crystal System
Triclinic  
tetragonal  
Birefringence
0.014  
0.004-0.008  
Clarity
-  
Transparent  
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