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Mimetite
Mimetite

Mottramite
Mottramite



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Mimetite
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Mottramite

Mimetite and Mottramite Optical Properties

Optical Properties

Luster

Resinous, Subadamantine
Greasy

Pleochroism

Weak
Visible X=Y= canary yellow to greenish yellow

Dispersion

0.040.04
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

2.106-2.2632.170
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic

Birefringence

0.0190.150
0 0.296
👆🏻

Clarity

Translucent
-

Mimetite and Mottramite Optic Character

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

Mimetite and Mottramite Transparency

Similar to their colors, Mimetite 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, Mimetite is Translucent while Mimetite is Translucent in appearance.