AM_Bobierrite
Formula: Mg3 P2 O16
Name: Bobierrite
Unit cell: 4.667 27.926 10.067 90.0 105.01 90.0 , V=1267.27
Space group: C12/C1 (15)

Takagi S , Mathew M , Brown W E , American Mineralogist , 71 (1986) p.1229-1233, Crystal structures of bobierrite and synthetic Mg3(PO4)2(H2O)8