AM_MgHPO3(H2O)6
Formula: Mg H13 P O9
Name: MgHPO3(H2O)6
Unit cell: 8.88 8.88 9.1 90.0 90.0 120.0 , V=621.44
Space group: R113 (1)

Corbridge D E C , Acta Crystallographica , 9 (1956) p.991-994, The crystal structure of magnesium phosphite hexahydrate, MgHPO3*6H2O