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Lazulite
Lazulite
☒

Crocoite
Crocoite
☒



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Lazulite
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Crocoite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
0.01
Transparent, Translucent
1.604-1.646
-
monoclinic
0.031-0.036
Transparent
 
Adamantine
Distinctly trichroic
0.02
Transparent
2.31-2.66
-
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
-9999
Transparent