Cassiterite and Shattuckite Optical Properties

Cassiterite

Shattuckite

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1 Optical Properties

1.1 Luster

Adamantine, Greasy

Silky

1.2 Pleochroism

Pleochroic haloes have been observed. Dichroic in yellow

X = very pale blue; Y = pale blue; Z = deep blue

1.3 Dispersion

0.07NA

0.007 1

1.4 Transparency

Transparent, Translucent

Translucent

1.5 Refractive Index

1.990-2.1051.752-1.815

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

Orthorhombic

1.8 Birefringence

0.096-0.0980.063

0 0.296

1.9 Clarity

Transparent

Translucent

Cassiterite and Shattuckite Optic Character

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

Similar to their colors, Cassiterite and Shattuckite 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.