Synchysite
| Synchysite | |
|---|---|
A synchysite with unknown end-member composition | |
| General | |
| Category | Minerals |
| Formula | Ca(REE)(CO3)2F |
| Strunz classification | 5.BD. |
| Crystal system | Monoclinic and trigonal |
| Space group | C2/c (monoclinic) |
| Identification | |
| Mohs scale hardness | 4.5 |
| References | |
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.
| Mineral name | Chemical formula | Symmetry | Space group |
|---|---|---|---|
| Huanghoite-(Ce) | BaCe(CO 3) 2F | ||
| Synchysite-(Ce) | Ca(Ce,La)(CO 3) 2F | ||
| Synchysite-(Nd) | CaNd(CO 3) 2F | ||
| Synchysite-(Y) | CaY(CO 3) 2F |
