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Fibrolite
Fibrolite

Hackmanite
Hackmanite



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Fibrolite
X
Hackmanite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
DistinctArthur Thomas
0.02
Transparent
1.658-1.678
-
-
-9999
Transparent
 
Vitreous
-
0.03
-
1.483-1.487
-
-
-9999
Transparent