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Charoite
Charoite

Polyhalite
Polyhalite



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Charoite
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Polyhalite

Optical Properties

Luster

Pearly, Chatoyant
Vitreous, Resinous

Pleochroism

-
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.545-1.5601.546-1.548
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
Triclinic

Birefringence

0.0090.021
0 0.296
👆🏻

Clarity

Translucent
-