Synchysite is a group of carbonate minerals. The three isostructural chemical end members are synchysite-(Ce), synchysite-(Nd) and synchysite-(Y). Huanghoite-(Ce) belongs to the group, but has a different symmetry and calcium is replaced by barium.
+ Synchesite group Mineral name Chemical formula Symmetry Space group Huanghoite-(Ce) Synchysite-(Ce) Synchysite-(Nd) Synchysite-(Y)
References