Template:Bowenite

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Bowenite (Serpentine)
Chemical composition Mg6((OH)8)Si4O10)
Crystal system mostly monoclinic
Habit cryptocrystalline
Cleavage none
Fracture even to hackly
Hardness 2-5.5
Optic nature none
Refractive index ±1.55
Birefringence none
Dispersion none
Specific gravity 2.59
Lustre waxy
Pleochroism none