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Williamsite
Williamsite
☒

Grandidierite
Grandidierite
☒



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Williamsite
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Grandidierite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Waxy, Silky, Resinous, Greasy
-
0.03
TranslucentHerve Nicolas Lazzarelli
1.530-1.575
-
-
-9999
TranslucentHerve Nicolas Lazzarelli
 
Vitreous, Pearly
visible
0.04
-
1.578-1.639
-
Orthorhombic
0.037-0.039
-

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