Template:Bixbite

From The Gemology Project
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Bixbite
Chemical composition Aluminium Beryllium Silicate Al2Be3(Si6O18)
Crystal system Hexagonal
Habit edit me
Cleavage edit me
Fracture edit me
Hardness 7.5
Optic nature edit me
Refraction index 1.58 - 1.59
Birefringence edit me
Dispersion edit me
Specific gravity 2.80
Lustre Vitreous
Pleochroism edit me