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Plumbogummite
Plumbogummite

Manganotantalite
Manganotantalite



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Plumbogummite
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Manganotantalite

Plumbogummite and Manganotantalite Optical Properties

1 Optical Properties
1.1 Luster
Resinous
Not Available
1.2 Pleochroism
None
Sometimes strongArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.653-1.6882.19-2.34
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
Not Available0.015
Achroite
0 0.296
1.9 Clarity
Not Available
TransparentWalter Schumann

Plumbogummite and Manganotantalite Optic Character

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

Plumbogummite and Manganotantalite Transparency

Similar to their colors, Plumbogummite and Manganotantalite 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, Plumbogummite is Not Available while Plumbogummite is Not Available in appearance.