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Synchysite-(Nd)

Formula:
Ca(Nd,Y,Gd)[F|(CO
 
3
)
 
2
]
Colour:Rose-pink, Pale ...Hardness:4½
Name:From the Greek σύγχΰσις "synchys" for "confounding" in allusion to its initially being mistaken for parisite, and the "-(Nd)" suffix due to the dominance of neodymium in the composition.


Synchysite Group.

The neodymium analogue of Synchysite-(Ce) and Synchysite-(Y).

Classification of Synchysite-(Nd)

IMA status:Approved
Strunz 8th edition ID:5/C.07-120
Nickel-Strunz 10th (pending) edition ID:5.BD.20c

5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
D : With rare earth elements (REE)
Dana 8th edition ID:16a.1.3.3

16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)(XO3)Zq
Hey's CIM Ref.:12.1.15

12 : Carbonates with other anions
1 : Carbonates with halides
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Type Occurrence of Synchysite-(Nd)

Type Locality:Grebnik Mt., Klina (Kline), Kosovo

Physical Properties of Synchysite-(Nd)

Diaphaneity (Transparency):Translucent
Colour:Rose-pink, Pale gray-blue, light grass-green; pale violet to colourless (transmitted light)
Hardness (Mohs):4½

Optical Data of Synchysite-(Nd)

Type:Biaxial (+)
RI values: nα = 1.610 nβ = 1.660 nγ = 1.740
Maximum Birefringence:δ = 0.130

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v strong

Chemical Properties of Synchysite-(Nd)

Formula:
Ca(Nd,Y,Gd)[F|(CO
 
3
)
 
2
]
Essential elements:C, Ca, F, Nd, O
All elements listed in formula:C, Ca, F, Gd, Nd, O, Y

Relationship of Synchysite-(Nd) to other Species

Member of Group:
Synchysite Group:
Related Minerals - Nickel-Strunz Grouping):

- +
5.BD.IMA2009-013
NaCe
 
2
(CO
 
3
)
 
2
[(CO
 
3
)
 
1-x
F
 
2x
]F
5.BD.Arisite-(La)
NaLa
 
2
(CO
 
3
)
 
2
[(CO
 
3
)
 
1-x
F
 
2x
]F
5.BD.05Cordylite-(Ce)
(Na,Ca)BaCe
 
2
(CO
 
3
)
 
4
F
5.BD.05Lukechangite-(Ce)
Na
 
3
Ce
 
2
[F|(CO
 
3
)
 
4
]
5.BD.10Zhonghuacerite-(Ce)
Ba
 
2
Ce[F|(CO
 
3
)
 
3
]
5.BD.10Kukharenkoite-(Ce)
Ba
 
2
Ce[F|(CO
 
3
)
 
3
]
5.BD.10Kukharenkoite-(La)
Ba
 
2
(La,Ce,Th)[F|(CO
 
3
)
 
3
]
5.BD.15Cebaite-(Ce)
Ba
 
3
Ce
 
2
[F
 
2
|(CO
 
3
)
 
5
]
5.BD.15Cebaite-(Nd)
Ba
 
3
(Nd,Ce)
 
2
[F
 
2
|(CO
 
3
)
 
5
]
5.BD.20aBastnäsite-(Ce)
(Ce,La)[F|CO
 
3
]
5.BD.20aBastnäsite-(La)
(La,Ce)[F|CO
 
3
]
5.BD.20aBastnäsite-(Y)
(Y,Ce)[F|CO
 
3
]
5.BD.20aHydroxylbastnäsite-(Ce)
(Ce,La)[(OH,F)|CO
 
3
]
5.BD.20aHydroxylbastnäsite-(Nd)
(Nd,Ce,La)[(OH,F)|CO
 
3
]
5.BD.20aHydroxylbastnäsite-(La)
(La,Ce)[(OH,F)|CO
 
3
]
5.BD.20bParisite-(Ce)
Ca(Ce,La)
 
2
[F
 
2
|(CO
 
3
)
 
3
]
5.BD.20bParisite-(Nd)
Ca(Nd,Ce,La)
 
2
[F
 
2
|(CO
 
3
)
 
3
]
5.BD.20dRöntgenite-(Ce)
Ca
 
2
(Ce,La)
 
3
[F
 
3
|(CO
 
3
)
 
5
]
5.BD.20cSynchysite-(Ce)
Ca(Ce,La)[F|(CO
 
3
)
 
2
]
5.BD.20cSynchysite-(Y)
Ca(Y,Ce)[F|(CO
 
3
)
 
2
]
5.BD.20aThorbastnäsite
Th(Ca,Ce)(CO
 
3
)
 
2
F
 
2
·3H
 
2
O
5.BD.20aBastnäsite-(Nd)
(Nd,Ce,La)[F|CO
 
3
]
5.BD.25Horváthite-(Y)
NaY[F
 
2
|CO
 
3
]
5.BD.25Qaqarssukite-(Ce)
Ba(Ce,REE) (CO
 
3
)
 
2
F
5.BD.35Huanghoite-(Ce)
BaCe[F|(CO
 
3
)
 
2
]
Related Minerals - Hey's Index Grouping:

- +
12.1.1Northupite
Na
 
3
Mg(CO
 
3
)
 
2
Cl
12.1.2Barentsite
Na
 
7
AlH
 
2
(CO
 
3
)
 
4
F
 
4
12.1.3Rouvilleite
Na
 
3
(Ca,Mn,Fe)
 
2
(CO
 
3
)
 
3
F
12.1.4Chlormagaluminite
(Mg,Fe
2+
 
)
 
4
Al
 
2
[(OH)
 
12
|(Cl
 
2
,CO
 
3
)] · 2H
 
2
O
12.1.5Defernite
Ca
 
6
(CO
 
3
)
 
2-x
(SiO
 
4
)
 
x
(OH)
 
7
(Cl,OH)
 
1-2x
 (x=0.5)
12.1.6Brenkite
Ca
 
2
[F
 
2
|CO
 
3
]
12.1.7Stenonite
(Sr,Ba,Na)
 
2
AlCO
 
3
F
 
5
12.1.8Bastnäsite-(Ce)
(Ce,La)[F|CO
 
3
]
12.1.9Bastnäsite-(La)
(La,Ce)[F|CO
 
3
]
12.1.10Bastnäsite-(Y)
(Y,Ce)[F|CO
 
3
]
12.1.11Parisite-(Ce)
Ca(Ce,La)
 
2
[F
 
2
|(CO
 
3
)
 
3
]
12.1.12Parisite-(Nd)
Ca(Nd,Ce,La)
 
2
[F
 
2
|(CO
 
3
)
 
3
]
12.1.13Synchysite-(Ce)
Ca(Ce,La)[F|(CO
 
3
)
 
2
]
12.1.14Synchysite-(Y)
Ca(Y,Ce)[F|(CO
 
3
)
 
2
]
12.1.16Röntgenite-(Ce)
Ca
 
2
(Ce,La)
 
3
[F
 
3
|(CO
 
3
)
 
5
]
12.1.17Cordylite-(Ce)
(Na,Ca)BaCe
 
2
(CO
 
3
)
 
4
F
12.1.19Huanghoite-(Ce)
BaCe[F|(CO
 
3
)
 
2
]
12.1.20Zhonghuacerite-(Ce)
Ba
 
2
Ce[F|(CO
 
3
)
 
3
]
12.1.21Cebaite-(Ce)
Ba
 
3
Ce
 
2
[F
 
2
|(CO
 
3
)
 
5
]
12.1.22Thorbastnäsite
Th(Ca,Ce)(CO
 
3
)
 
2
F
 
2
·3H
 
2
O
12.1.23Phosgenite
Pb
 
2
[Cl
 
2
|CO
 
3
]
12.1.24Barstowite
Pb
 
4
[Cl
 
6
|CO
 
3
] · H
 
2
O
12.1.25Albrechtschraufite
Ca
 
4
Mg(UO
 
2
)
 
2
[F
 
2
|(CO
 
3
)
 
6
] · 17 H
 
2
O
12.1.26Kettnerite
(BiO)Ca[F|CO
 
3
]

Other Names for Synchysite-(Nd)

Other Languages:
German:Synchisit-(Nd)

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Synchysite-(Nd)

Reference List:Proc. 4th International Congress for the Study of Bauxites, Alumina and Aluminium, Athens (1978), 13pp.

American Mineralogist (1979): 64: 658.

Canadian Mineralogist (1994): 32: 865.

Internet Links for Synchysite-(Nd)

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    Localities for Synchysite-(Nd)

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Liberec Region
    		Scharm, B.: Přehled minerálů nalezených v oblasti uranových koncentrací v severočeské křídě. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1995, roč. 3, s. 169-172.
      • Ústí Region
        • Ceská Lípa (Böhmisch Leipa)
          • Stráž (Wartenberg)
    		No reference listed
    Finland
     
    • Länsi-Suomen Lääni
      • Kangasala
    		Vorma et al 1966 Bulletin de la Commission Geologique de Finlande 222
    Italy
     
    • Aosta Valley
      • Courmayeur
        • Les Grandes Jorasses Massif
          • Ferret Valley
    		Palenzona, A. & Martinelli, A. (2009): Sinchisite-(Nd) al Vallone del Triolet, Courmayeur, Aosta. Rivista Mineralogica Italiana, 2/2009, 122-124.
    Kosovo
     
    • Klina (Kline)
    		Am. Min. (1979), 64, 658; NJMM (1983), 201; Lapis 3 (2001), 8
    Mineral and/or Locality
    Google
     
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 13th Nov 2009 22:57:09