Catapleiite and Mottramite Optical Properties

Catapleiite

Mottramite

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1 Optical Properties

1.1 Luster

Vitreous

Greasy

1.2 Pleochroism

Not Available

Visible X=Y= canary yellow to greenish yellow

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)

Not Available

1.5 Refractive Index

1.590-1.6292.170

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: B2/b (pseudo-HEX)

Orthorhombic

1.8 Birefringence

0.0390.150

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Not Available

Catapleiite and Mottramite Optic Character

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

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Catapleiite and Mottramite Transparency

Similar to their colors, Catapleiite 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, Catapleiite is Gemmological Tables (2004) and TransparentUlrich Henn and Claudio C. Milisenda while Catapleiite is Gemmological Tables (2004) and TransparentUlrich Henn and Claudio C. Milisenda in appearance.