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Bastnasite
Bastnasite

Microcline
Microcline



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Bastnasite
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Microcline

Bastnasite and Microcline Optical Properties

Optical Properties

Luster

Vitreous, Greasy, Pearly
Vitreous

Pleochroism

Faint
-

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.717-1.7221.514-1.539
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Triclinic Pinacoidal H-M Symbol (1) Space Group: P1

Birefringence

0.1000.008-0.010
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Bastnasite and Microcline Optic Character

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

Bastnasite and Microcline Transparency

Similar to their colors, Bastnasite and Microcline 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, Bastnasite is while Bastnasite is in appearance.