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Forsterite
Forsterite
☒

Manganotantalite
Manganotantalite
☒



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Forsterite
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Manganotantalite
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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
 
-
Sometimes strongArthur Thomas
-
TransparentWalter Schumann
2.19-2.34
-
-
0.015
TransparentWalter Schumann

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Glass
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Manganotantalite Vs Grandidie...

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