Template:Azurite

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Azurite
Chemical composition Cu3(CO3)2(OH)2
Crystal system Monoclinic
Habit Short columlar, botryoidal
Cleavage Indistinct
Fracture Conchoidal, uneven, brittle
Hardness 3 1/2 - 4
Optic nature Biaxial +
Refractive index 1.720-1.848
Birefringence 0.108-0.110
Specific gravity 3.7-3.9
Lustre Vitreous
Pleochroism Light blue, dark blue