Manganotantalite and Hercynite Optical Properties

Manganotantalite

Hercynite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Sometimes strongArthur Thomas

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TransparentWalter Schumann, Gemstones of the world (2001) More from other references

Translucent

1.5 Refractive Index

2.19-2.341.80-1.83

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m

1.8 Birefringence

0.015Not Available

0 0.296

1.9 Clarity

TransparentWalter Schumann

Translucent

Manganotantalite and Hercynite Optic Character

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

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Manganotantalite and Hercynite Transparency

Similar to their colors, Manganotantalite and Hercynite 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, Manganotantalite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann while Manganotantalite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann in appearance.