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Mottramite
Mottramite

Mimetite
Mimetite



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Mottramite
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Mimetite

Mottramite and Mimetite Optical Properties

Optical Properties

Luster

Greasy
Resinous, Subadamantine

Pleochroism

Visible X=Y= canary yellow to greenish yellow
Weak

Dispersion

0.040.04
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

2.1702.106-2.263
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Hexagonal

Birefringence

0.1500.019
0 0.296
👆🏻

Clarity

-
Translucent

Mottramite and Mimetite Optic Character

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

Mottramite and Mimetite Transparency

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