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Lepidocrocite
Lepidocrocite

Bastnasite
Bastnasite



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Lepidocrocite
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Bastnasite

Lepidocrocite and Bastnasite Optical Properties

Optical Properties

Luster

-
Vitreous, Greasy, Pearly

Pleochroism

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

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.9401.717-1.722
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Hexagonal

Birefringence

-99990.100
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Lepidocrocite and Bastnasite Optic Character

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

Similar to their colors, Lepidocrocite and Bastnasite 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.