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Violane
Violane
☒

Colemanite
Colemanite
☒



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Violane
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Colemanite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.03
Translucent
1.668-1.703
-
-
0.024-0.030
Translucent
 
Vitreous
-
0.02
Transparent
1.584-1.615
-
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
0.028-0.030
Transparent

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