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Sellaite
Sellaite
☒

Alunite
Alunite
☒



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Sellaite
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Alunite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
-
0.03
Transparent
1.378-1.390
-
tetragonal
0.012
Transparent
 
Vitreous, Pearly
-
0.02
-
1.572
-
Trigonal
0.020
-

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