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Tremolite and Anthophyllite Optical Properties


Anthophyllite and Tremolite Optical Properties


Optical Properties

Luster
Vitreous, Silky   
Vitreous, Pearly   

Pleochroism
Not Available   
When Fe-rich   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Transparent   

Refractive Index
1.599-1.637   
1.603-1.690   

Optic Character
Not Available   
Biaxial/+   

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

Birefringence
0.023-0.028   
Not Available   

Clarity
Transparent   
Transparent   

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Tremolite and Anthophyllite Optic Character

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

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Tremolite and Anthophyllite Transparency

Similar to their colors, Tremolite 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, Tremolite is Transparent while Tremolite is Transparent in appearance.

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