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Polyhalite
Polyhalite
☒

Phosphophyllite
Phosphophyllite
☒



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Polyhalite
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Phosphophyllite
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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
-
 
-
-
0.03
-
1.595-1.621
-
-
0.021
TransparentUlrich Henn and Claudio C. Milisenda

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Phosphophyllite Vs Nickeline

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