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Clinochlore and Allanite Optical Properties


Allanite and Clinochlore Optical Properties


Optical Properties

Luster
Pearly, Greasy   
Not Available   

Pleochroism
Distinct: light yellow-green to light bluE   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Not Available   

Refractive Index
1.571-1.597   
1   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m   
Not Available   

Birefringence
Not Available   
0.013-0.036   

Clarity
Transparent   
Not Available   

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Clinochlore and Allanite Optic Character

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

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Clinochlore and Allanite Transparency

Similar to their colors, Clinochlore and Allanite 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, Clinochlore is Transparent while Clinochlore is Transparent in appearance.

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