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Manganotantalite
Manganotantalite

Cassiterite
Cassiterite



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Manganotantalite
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Cassiterite

Manganotantalite and Cassiterite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Adamantine, Greasy
1.2 Pleochroism
Sometimes strongArthur Thomas
Pleochroic haloes have been observed. Dichroic in yellow
1.3 Dispersion
NA0.07
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
Transparent, Translucent
1.5 Refractive Index
2.19-2.341.990-2.105
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
tetragonal
1.8 Birefringence
0.0150.096-0.098
Achroite
0 0.296
1.9 Clarity
TransparentWalter Schumann
Transparent

Manganotantalite and Cassiterite Optic Character

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

Manganotantalite and Cassiterite Transparency

Similar to their colors, Manganotantalite and Cassiterite 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.