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Lepidocrocite
Lepidocrocite

Mellite
Mellite



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Lepidocrocite
X
Mellite

Lepidocrocite and Mellite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

Strong; X = colorless to yellow; Y = orange
Weak: yellowish brown yellowAnthony et al

Dispersion

0.020.01
0.005 1
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Transparency

-
-

Refractive Index

1.9401.509-1.541
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

-99990.030
0 0.296
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Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Lepidocrocite and Mellite Optic Character

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

Lepidocrocite and Mellite Transparency

Similar to their colors, Lepidocrocite and Mellite 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, Lepidocrocite is while Lepidocrocite is in appearance.