Hurlbutite and Anorthoclase Optical Properties

Hurlbutite

Anorthoclase

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1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Pearly

1.2 Pleochroism

Not Available

WeakMichael OâDonoghue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

Translucent

1.5 Refractive Index

1.595-1.6041.518-1.534

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a

Triclinic Pinacoidal H-M Symbol ( 1) Space Group: C1

1.8 Birefringence

0.0090.006-0.008

0 0.296

1.9 Clarity

Transparent

Translucent

Hurlbutite and Anorthoclase Optic Character

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

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Hurlbutite and Anorthoclase Transparency

Similar to their colors, Hurlbutite and Anorthoclase 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, Hurlbutite is Transparent while Hurlbutite is Transparent in appearance.