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Bastnasite
Bastnasite

Cacoxenite
Cacoxenite



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Bastnasite
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Cacoxenite

Bastnasite and Cacoxenite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy, Pearly
Silky
1.2 Pleochroism
Faint
visible: O = Pale yellow E = Canary yellow to yellow orange
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Not Available
1.5 Refractive Index
1.717-1.7221.575-1.585
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Hexagonal
1.8 Birefringence
0.100Not Available
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Not Available

Bastnasite and Cacoxenite Optic Character

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

Similar to their colors, Bastnasite and Cacoxenite 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 Gemmological Tables (2004) More from other references while Bastnasite is Gemmological Tables (2004) More from other references in appearance.