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Forsterite
Forsterite

Thomsonite
Thomsonite



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Forsterite
X
Thomsonite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
colorless.
0.02
Transparent
1.635-1.671
-
Orthorhombic
0.033-0.042
Transparent
 
Vitreous, Pearly
-
0.01
Translucent
1.510-1.550
-
Orthorhombic
0.015-0.020
Translucent