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Cassiterite
Cassiterite

Barite
Barite



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Cassiterite
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Barite

Cassiterite and Barite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Greasy
Vitreous
1.2 Pleochroism
Pleochroic haloes have been observed. Dichroic in yellow
colorless.
1.3 Dispersion
0.07NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Not Available
1.5 Refractive Index
1.990-2.105Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Orthorhombic
1.8 Birefringence
0.096-0.098Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Not Available

Cassiterite and Barite Optic Character

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

Cassiterite and Barite Transparency

Similar to their colors, Cassiterite and Barite 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, Cassiterite is Translucent and Transparent while Cassiterite is Translucent and Transparent in appearance.