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Lepidocrocite
Lepidocrocite

Alunite
Alunite



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X
Lepidocrocite
X
Alunite

Lepidocrocite and Alunite Optical Properties

Optical Properties

Luster

-
Vitreous, Pearly

Pleochroism

Strong; X = colorless to yellow; Y = orange
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.9401.572
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

-99990.020
0 0.296
👆🏻

Clarity

-
-

Lepidocrocite and Alunite Optic Character

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

Similar to their colors, Lepidocrocite and Alunite 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.