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Anthophyllite
Anthophyllite

Phosphosiderite
Phosphosiderite



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Anthophyllite
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Phosphosiderite

Anthophyllite and Phosphosiderite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
Pale rose-red carmine-red colorlessAnthony et al

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.603-1.6901.692-1.739
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
-

Birefringence

-99990.240
0 0.296
👆🏻

Clarity

Transparent
Transparent

Anthophyllite and Phosphosiderite Optic Character

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

Similar to their colors, Anthophyllite and Phosphosiderite 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.