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Muscovite
Oligoclase
Oligoclase and Muscovite Optical Properties


Optical Properties
Luster
Vitreous, Silky, Pearly   
Vitreous   
Pleochroism
Weak   
Not Available   
Dispersion
Not Available   
Not Available   
Transparency
Transparent   
Gemmological Tables (2004)   
Refractive Index
1.552-1.618   
1.538-1.550   
Optic Character
Not Available   
Not Available   
Crystal System
monoclinic   
Not Available   
Birefringence
Not Available   
0.010   
Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   
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