Template:Musgravite

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Musgravite
Chemical composition Magnesium-beryllium-aluminium oxide

Mg2BeAl6O12

Crystal system Trigonal
Hardness 8
Optic nature uniaxial -
Refractive index 1.721 - 1.728
Birefringence ± 0.004
Specific gravity ± 3.69
Pleochroism faint
Fluorescence

LW: inert
SW: inert