Blodite group
The blodite group is a group of minerals with two cations and two anions. The group includes blödite Na2Mg2•4H2O, leonite K2Mg2•4, anapaite Ca2Fe2•4, schertelite 2Mg2•4 manganoblödite Na2Mn2•4, cobaltoblödite Na2Co 2•4, changoiteNa2Zn2•4
