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Phosphosiderite
Phosphosiderite

Anthophyllite
Anthophyllite



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Phosphosiderite
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Anthophyllite

Phosphosiderite and Anthophyllite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Pale rose-red carmine-red colorlessAnthony et al
-

Dispersion

0.040.01
0.005 1
👆🏻

Transparency

Transparent
Transparent

Refractive Index

1.692-1.7391.603-1.690
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

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

Birefringence

0.240-9999
0 0.296
👆🏻

Clarity

Transparent
Transparent

Phosphosiderite and Anthophyllite Optic Character

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

Phosphosiderite and Anthophyllite Transparency

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