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Riesling Beryl
Riesling Beryl

Polyhalite
Polyhalite



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Riesling Beryl
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Polyhalite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
Strongly dichroicMartin H. Read
0.01
-
1.59
-
-
0.004-0.010
-
 
Vitreous, Resinous
-
0.02
-
1.546-1.548
-
Triclinic
0.021
-