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Atacamite
Atacamite

Powellite
Powellite



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Atacamite
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Powellite

Atacamite and Powellite Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Vitreous
Greasy, Subadamantine
1.2 Pleochroism
X = pale green; Y = yellow-green; Z = grass-green
In deeply colored specimens: blue greenAnthony et al
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent
1.5 Refractive Index
1.8311.974-1.984
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Not Available
1.8 Birefringence
0.049Not Available
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Atacamite and Powellite Optic Character

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

Atacamite and Powellite Transparency

Similar to their colors, Atacamite and Powellite 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, Atacamite is Not Available while Atacamite is Not Available in appearance.