8 PHOSPHATES, ARSENATES, VANADATES
8.D Phosphates, etc
8.DC With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
8.DC.50 Wavellite Al3(PO4)2(OH,F)3•5(H2O)
Space Group Pcmn
Point Group 2/m 2/m 2/m
8.DC.50 Allanpringite Fe3(PO4)2(OH)3•5H2O
Space Group P 21/n pseudo-ortho
Point Group 2/m