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Torbanite
Torbanite

Alunite
Alunite



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Torbanite
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Alunite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.02
-
-9999
-
-
-9999
-
 
Vitreous, Pearly
-
0.02
-
1.572
-
Trigonal
0.020
-