Cacoxenite and Covellite Optical Properties

Cacoxenite

Covellite

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1 Optical Properties

1.1 Luster

Silky

Resinous

1.2 Pleochroism

visible: O = Pale yellow E = Canary yellow to yellow orange

Marked

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references

1.5 Refractive Index

1.575-1.5851.45-2.62

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Hexagonal

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Not Available

OpaqueAnthony et al

Cacoxenite and Covellite Optic Character

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

Similar to their colors, Cacoxenite 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, Cacoxenite is Not Available while Cacoxenite is Not Available in appearance.