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Shattuckite
Shattuckite

Mottramite
Mottramite



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Shattuckite
X
Mottramite

Shattuckite and Mottramite Optical Properties

Optical Properties

Luster

Silky
Greasy

Pleochroism

X = very pale blue; Y = pale blue; Z = deep blue
Visible X=Y= canary yellow to greenish yellow

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.752-1.8152.170
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.0630.150
0 0.296
👆🏻

Clarity

Translucent
-

Shattuckite and Mottramite Optic Character

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

Shattuckite and Mottramite Transparency

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