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Creedite
Creedite

Polyhalite
Polyhalite



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Creedite
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Polyhalite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
-
0.02
Transparent, Translucent
1.461-1.485
-
monoclinic
0.024
Transparent
 
Vitreous, Resinous
-
0.02
-
1.546-1.548
-
Triclinic
0.021
-