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Hibonite
Hibonite

Tremolite
Tremolite



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Hibonite
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Tremolite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
O = brownish gray; E = gray
0.02
-
1.79-1.807
-
Hexagonal
-9999
-
 
Vitreous, Silky
-
0.02
Transparent
1.599-1.637
-
monoclinic
0.023-0.028
Transparent