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Xonotlite
Xonotlite

Covellite
Covellite



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Xonotlite
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Covellite

Xonotlite and Covellite Optical Properties

Optical Properties

Luster

Vitreous, Silky
Resinous

Pleochroism

-
Marked

Dispersion

0.030.08
0.005 1
👆🏻

Transparency

-
OpaqueAnthony et al

Refractive Index

1.581-1.5931.45-2.62
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Hexagonal

Birefringence

0.010-9999
0 0.296
👆🏻

Clarity

-
OpaqueAnthony et al

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.

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 while Xonotlite is in appearance.