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Polyhalite
Polyhalite

Moonstone
Moonstone



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Polyhalite
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Moonstone
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Resinous
-
0.02
-
1.546-1.548
-
Triclinic
0.021
-
 
Pearly
-
0.01
Transparent, Transparent to translucent
1.518-1.527
-
monoclinic
0.006-0.007
Transparent