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Alunite
Alunite

Plumbogummite
Plumbogummite



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Alunite
X
Plumbogummite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Pearly
-
0.02
-
1.572
-
Trigonal
0.020
-
 
Resinous
None
0.04
-
1.653-1.688
-
Trigonal
-9999
-