Template:Synthetic forsterite

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Synthetic forsterite
Chemical composition Magnesium silicate

Mg2SiO4

Crystal system Orthorhombic
Hardness 7
Optic nature Biaxial +
Refractive index 1.634 - 1.670
Birefringence 0.033 - 0.038
Specific gravity 3.22
Pleochroism Strongly dichroic
Fluorescence

LW: chalky orangy yellow
SW: weak greenish yellow