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Phlogopite
Phlogopite

Sphalerite
Sphalerite



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Phlogopite
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Sphalerite

Phlogopite and Sphalerite Optical Properties

1 Optical Properties
1.1 Luster
Pearly
Adamantine
1.2 Pleochroism
Not Available
AbsentWalter Schumann
1.3 Dispersion
NA0.16
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent, Translucent
1.5 Refractive Index
1.530-1.5732.368-2.371
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Isometric
1.8 Birefringence
0.0280-0.0450Not Available
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Phlogopite and Sphalerite Optic Character

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

Phlogopite and Sphalerite Transparency

Similar to their colors, Phlogopite and Sphalerite 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, Phlogopite is Not Available while Phlogopite is Not Available in appearance.