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Anthophyllite
Anthophyllite

Atacamite
Atacamite



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Anthophyllite
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Atacamite

Anthophyllite and Atacamite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Adamantine, Vitreous
1.2 Pleochroism
When Fe-rich
X = pale green; Y = yellow-green; Z = grass-green
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Not Available
1.5 Refractive Index
1.603-1.6901.831
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
Orthorhombic
1.8 Birefringence
Not Available0.049
Achroite
0 0.296
1.9 Clarity
Transparent
Not Available

Anthophyllite and Atacamite Optic Character

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

Similar to their colors, Anthophyllite and Atacamite 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.