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Bastnasite
Bastnasite

Vesuvianite
Vesuvianite



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Bastnasite
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Vesuvianite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Greasy, Pearly
Faint
0.02
-
1.717-1.722
-
Hexagonal
0.100
TransparentUlrich Henn and Claudio C. Milisenda
 
Vitreous, Resinous
slight in colored varieties
0.03
-
1.703-1.752
-
tetragonal
0.004-0.006
-