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Anthophyllite
Anthophyllite

Cassiterite
Cassiterite



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Anthophyllite
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Cassiterite

Anthophyllite and Cassiterite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Adamantine, Greasy
1.2 Pleochroism
When Fe-rich
Pleochroic haloes have been observed. Dichroic in yellow
1.3 Dispersion
NA0.07
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Translucent
1.5 Refractive Index
1.603-1.6901.990-2.105
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
tetragonal
1.8 Birefringence
Not Available0.096-0.098
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Anthophyllite and Cassiterite Optic Character

Anthophyllite and Cassiterite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Anthophyllite 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 Anthophyllite 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. Anthophyllite has Biaxial/+ character.

Anthophyllite and Cassiterite Transparency

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