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Beudantite
Beudantite

Hibonite
Hibonite



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Beudantite
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Hibonite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Resinous
visible
0.03
-
1.957
-
Trigonal
0.014
-
 
Vitreous
O = brownish gray; E = gray
0.02
-
1.79-1.807
-
Hexagonal
-9999
-