AM_Hydromagnesite
Formula: Mg5 C4 O18 H10
Name: Hydromagnesite
Unit cell: 10.105 8.954 8.378 90.0 114.44 90.0 , V=690.12
Space group: P121/C1 (14)

Akao M , Iwai S , Acta Crystallographica, Section B , 33 (1977) p.1273-1275, The hydrogen bonding of hydromagnesite