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Hurlbutite and Hollandite Optical Properties


Hollandite and Hurlbutite Optical Properties


Optical Properties

Luster
Vitreous   
Not Available   

Pleochroism
Not Available   
Weak.   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Not Available   

Refractive Index
1.595-1.604   
Not Available   

Optic Character
Not Available   
Not Available   

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

Birefringence
0.009   
Not Available   

Clarity
Transparent   
Not Available   

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<< Physical Properties

Hurlbutite and Hollandite Optic Character

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

Similar to their colors, Hurlbutite and Hollandite 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.

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