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Austinite
Austinite

Montebrasite
Montebrasite



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Austinite
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Montebrasite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Subadamantine, Silky
-
0.03
-
1.759
-
Orthorhombic
0.024
-
 
-
-
0.02
TransparentWalter Schumann
1.578-1.646
-
-
0.020-0.030
TransparentWalter Schumann