Template:Axinite

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Axinite
Chemical composition Complex borosilicate
Crystal system Triclinic
Habit Axe shaped.
Cleavage Perfect {100}
Fracture Uneven to conchoidal, brittle
Hardness 6.5 - 7
Optic nature Biaxial - (or +)
Refractive index 1.674 - 1.706
Birefringence 0.010 - 0.012
Dispersion Low, 0.018 - 0.020
Specific gravity 3.27-3.29
Lustre Bright vitreous
Pleochroism Moderate to Strong