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Phosphosiderite
Phosphosiderite

Manganotantalite
Manganotantalite



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Phosphosiderite and Manganotantalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Pale rose-red carmine-red colorlessAnthony et al
Sometimes strongArthur Thomas
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.692-1.739
2.19-2.34
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Not Available
1.8 Birefringence
0.240
0.015
1.9 Clarity
Transparent
TransparentWalter Schumann

Phosphosiderite and Manganotantalite Optic Character

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

Phosphosiderite and Manganotantalite Transparency

Similar to their colors, Phosphosiderite 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, Phosphosiderite is Transparent while Phosphosiderite is Transparent in appearance.