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Xonotlite and Covellite Optical Properties


Covellite and Xonotlite Optical Properties


Optical Properties

Luster
Vitreous, Silky   
Resinous   

Pleochroism
Not Available   
Marked   

Dispersion
Not Available   
Not Available   

Transparency
Gems, Sixth Edition (2006)   
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references   

Refractive Index
1.581-1.593   
1.45-2.62   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Hexagonal   

Birefringence
0.010   
Not Available   

Clarity
Gems   
OpaqueAnthony et al   

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Xonotlite and Covellite Optic Character

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

Similar to their colors, Xonotlite and Covellite 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, Xonotlite is Gems and Sixth Edition (2006) while Xonotlite is Gems and Sixth Edition (2006) in appearance.

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