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Sanidine
Sanidine

Mottramite
Mottramite



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Sanidine
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Mottramite

Sanidine and Mottramite Optical Properties

Optical Properties

Luster

-
Greasy

Pleochroism

-
Visible X=Y= canary yellow to greenish yellow

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.518-1.5362.170
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

0.005-0.0080.150
0 0.296
👆🏻

Clarity

Transparent
-

Sanidine and Mottramite Optic Character

Sanidine and Mottramite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Sanidine and Mottramite 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 Sanidine and Mottramite 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.

Sanidine and Mottramite Transparency

Similar to their colors, Sanidine and Mottramite 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, Sanidine is Transparent while Sanidine is Transparent in appearance.