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Antigorite
Antigorite

Anthophyllite
Anthophyllite



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Antigorite
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Anthophyllite

Antigorite and Anthophyllite Optical Properties

Optical Properties

Luster

Waxy, Silky, Resinous, Greasy
Vitreous, Pearly

Pleochroism

pale greenish yellow
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Translucent
Transparent

Refractive Index

1.530-1.5751.603-1.690
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

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

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Translucent
Transparent

Antigorite and Anthophyllite Optic Character

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

Antigorite and Anthophyllite Transparency

Similar to their colors, Antigorite and Anthophyllite 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, Antigorite is Translucent while Antigorite is Translucent in appearance.