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Feldspar
Feldspar

Axinite
Axinite



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Feldspar
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Axinite

Feldspar and Axinite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

None
Strong

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.518-1.5701.656-1.704
1 3.25
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Optic Character

-
Biaxial/+

Crystal System

Triclinic or monoclinic
Triclinic

Birefringence

0.008-0.0100.009-0.012
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Feldspar and Axinite Optic Character

Feldspar and Axinite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Feldspar and Axinite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Feldspar and Axinite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character. Axinite has Biaxial/+ character.

Feldspar and Axinite Transparency

Similar to their colors, Feldspar and Axinite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Feldspar is Transparent and Translucent while Feldspar is Transparent and Translucent in appearance.