Apatite crystallization from glasses in the Ca5(PO4)3F-CaAl2Si2O8-CaMgSi2O6-NaAlSi3O8 system

► We prepared glasses in fluorapatite-anorthite-diopside system. ► Partial and total replacement of anorthite fraction by albite was performed. ► Amorphous phase separation was observed in all compositions. ► Polymerisation of the glass network increased upon replacing anorthite by albite. ► Glass powder compacts heat-treated at 900 °C exhibited good densification behaviour.