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Herderite
Herderite
☒

Polyhalite
Polyhalite
☒



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Herderite
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Polyhalite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
-
0.01
Transparent
1.587-1.642
Biaxial/+
monoclinic
0.028-0.032
Transparent
 
Vitreous, Resinous
-
0.02
-
1.546-1.548
-
Triclinic
0.021
-

Compare Colorless Gems

Colorless Gems

Phenakite
Phenakite
Phosphophyllite
Phosphophyllite
Zektzerite
Zektzerite
Polyhalite
Hyalite
Polyhalite Vs Hyalite
Polyhalite
Muscovite
Polyhalite Vs Muscovite
Polyhalite
Oligoclase
Polyhalite Vs Oligoclase

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