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Musgravite
Musgravite

Cryolite
Cryolite



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Musgravite
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Cryolite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
-
0.02
-
1.719-1.739
-
Trigonal
0.014-0.016
TransparentUlrich Henn and Claudio C. Milisenda
 
Vitreous, Greasy, Pearly
colorless.
0.01
-
1.338-1.339
-
monoclinic
0.001
TransparentUlrich Henn and Claudio C. Milisenda