What is "synchysite"

n. (context mineral English) Any of a range of calcium carbonate / calcium fluoride minerals that contain varying amounts of lanthanides

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

scope=col | Mineral name

scope=col | Chemical formula

scope=col | Symmetry

scope=col | Space group

Huanghoite-(Ce)

3 2/m

$R\;\overline{3}\;m$

Synchysite-(Ce)

2/m

C 2/c

Synchysite-(Nd)

2/m

C 2/c

Synchysite-(Y)

2/m

C 2/c