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Xonotlite
Xonotlite

Covellite
Covellite



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Xonotlite
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Covellite

Xonotlite and Covellite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Silky
Resinous
1.2 Pleochroism
Not Available
Marked
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gems, Sixth Edition (2006)
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
1.5 Refractive Index
1.581-1.5931.45-2.62
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Hexagonal
1.8 Birefringence
0.010Not Available
Achroite
0 0.296
1.9 Clarity
Gems
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 Gems and Sixth Edition (2006) while Xonotlite is Gems and Sixth Edition (2006) in appearance.