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Marcasite and Cassiterite Optical Properties


Cassiterite and Marcasite Optical Properties


Optical Properties

Luster
Not Available   
Adamantine, Greasy   

Pleochroism
NilArthur Thomas   
Pleochroic haloes have been observed. Dichroic in yellow   

Dispersion
Not Available   
0.07   
6

Transparency
Gemmological Tables (2004) More from other references   
Transparent, Translucent   

Refractive Index
Not Available   
1.990-2.105   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
tetragonal   

Birefringence
Not Available   
0.096-0.098   

Clarity
Gemmological Tables (2004) More from other references   
Transparent   

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Marcasite and Cassiterite Optic Character

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

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Marcasite and Cassiterite Transparency

Similar to their colors, Marcasite 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, Marcasite is Gemmological Tables (2004) More from other references while Marcasite is Gemmological Tables (2004) More from other references in appearance.

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Yellow Gemstones


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