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Sulfur
Sulfur
☒

Neptunite
Neptunite
☒



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Sulfur
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Neptunite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.02
-
-9999
-
Orthorhombic
-9999
-
 
Vitreous
x=yellow-orange
0.03
Translucent
1.692-1.734
-
monoclinic
0.0294-0.0452
Translucent

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