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Anthophyllite
Anthophyllite

Zincite
Zincite



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Anthophyllite
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Zincite

Anthophyllite and Zincite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Subadamantine, Resinous

Pleochroism

-
Very weak

Dispersion

0.010.16
0.005 1
👆🏻

Transparency

Transparent
TransparentRobert C. Kammerling

Refractive Index

1.603-1.6902.013-2.029
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Hexagonal

Birefringence

-99990.016
0 0.296
👆🏻

Clarity

Transparent
TransparentRobert C. Kammerling

Anthophyllite and Zincite Optic Character

Anthophyllite and Zincite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Anthophyllite and Zincite 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 Anthophyllite and Zincite 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. Anthophyllite has Biaxial/+ character.

Anthophyllite and Zincite Transparency

Similar to their colors, Anthophyllite and Zincite 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, Anthophyllite is Transparent while Anthophyllite is Transparent in appearance.