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Stibiotantalite
Stibiotantalite

Polyhalite
Polyhalite



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Stibiotantalite
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Polyhalite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Adamantine
-
0.03
-
2.37-2.45
-
-
0.08
TransparentUlrich Henn and Claudio C. Milisenda
 
Vitreous, Resinous
-
0.02
-
1.546-1.548
-
Triclinic
0.021
-