Manganotantalite and Esperite Optical Properties

Manganotantalite

Esperite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Sometimes strongArthur Thomas

colorless.

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

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

OpaqueAnthony et al, Opaque, Transparent

1.5 Refractive Index

2.19-2.341.760-1.774

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

0.0150.012

0 0.296

1.9 Clarity

TransparentWalter Schumann

OpaqueAnthony et al

Manganotantalite and Esperite Optic Character

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

Similar to their colors, Manganotantalite and Esperite 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.