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Chemical composition CuSiO32H2O
Crystal system Monoclinic
Habit Cryptocrystalline
Cleavage None
Fracture Even
Hardness 2-4
Optic nature None
Refractive index ±1.50
Birefringence None
Dispersion None
Specific gravity 2.0-2.4
Lustre Vitreous
Pleochroism Weak