| annabergite | Ni3(AsO4)2·8H2O |
| arupite | Ni3(PO4)2·8H2O |
| baricite | (Mg,Fe)3(PO4)2·8H2O |
| erythrite | Co3(AsO4)2·8H2O |
| hornesite | Mg3(AsO4)2·8H2O |
| kottigite | Zn3(AsO4)2·8H2O |
| manganese-hornesite | (Mn,Mg)3(AsO4)2·8H2O |
| parasymplesite | Fe3(AsO4)2·8H2O |
| vivianite | Fe3(PO4)2·8H2O |