Aventurine feldspar and Polyhalite Optical Properties

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Aventurine feldspar

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Polyhalite

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Aventurine feldspar

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Polyhalite

Aventurine feldspar

Aventurine feldspar

Polyhalite

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

-

-

0.01

-

-9999

-

-

-9999

-

Vitreous, Resinous

-

0.02

-

1.546-1.548

-

Triclinic

0.021

-

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