Synchysite

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Synchysite
Synchysite-107154.jpg
A synchysite with unknown end-member composition
General
Category Mineral
Formula
(repeating unit)
Ca(REE)(CO3)2F
Strunz classification 5.BD.
Crystal system Monoclinic and trigonal
Identification
Mohs scale hardness 4.5
References [1]

Synchysite is a group of carbonate minerals.[2] 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.[3][4]

Synchesite group
Mineral name Chemical formula Symmetry Space group
Huanghoite-(Ce) BaCe(CO
3
)
2
F
Synchysite-(Ce) Ca(Ce,La)(CO
3
)
2
F
Synchysite-(Nd) CaNd(CO
3
)
2
F
Synchysite-(Y) CaY(CO
3
)
2
F

References[edit]

  1. ^ "Synchysite-(Ce)" (PDF). handbookofmineralogy. Retrieved 24 February 2013. 
  2. ^ "Synchysite Group". Retrieved 24 February 2013. 
  3. ^ "Synchysite-(Ce)". Retrieved 24 February 2013. 
  4. ^ "Huanghoite-(Ce)". Retrieved 24 February 2013.