Powellite and Ferro-axinite Axinite-Fe Optical Properties

Powellite

Ferro-axinite Axinite-Fe

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1 Optical Properties

1.1 Luster

Greasy, Subadamantine

Vitreous

1.2 Pleochroism

In deeply colored specimens: blue greenAnthony et al

Colorless

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

1.974-1.9841.674-1.693

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Triclinic Pinacoidal H-M Symbol ( 1) Space Group: P1

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

Not Available

Powellite and Ferro-axinite Axinite-Fe Optic Character

Powellite and Ferro-axinite Axinite-Fe optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Powellite and Ferro-axinite Axinite-Fe 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 Powellite and Ferro-axinite Axinite-Fe 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.

Compare Blue Gemstones

Powellite Vs Rubellite

Powellite Vs Rock Crystal

Powellite Vs Sanidine

Powellite and Ferro-axinite Axinite-Fe Transparency

Similar to their colors, Powellite and Ferro-axinite Axinite-Fe 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, Powellite is Transparent while Powellite is Transparent in appearance.