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Röntgenite-(Ce)

Big Photo

Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
© Stephan Wolfsried

Show Röntgenite-(Ce) Photos (8)
Formula:
Ca
 
2
(Ce,La)
 
3
[F
 
3
|(CO
 
3
)
 
5
]
System:TrigonalColour:Yellow to brown, green
Hardness:4½
Name:
For Wilhelm Conrad Röntgen (1845-1923), German physicist, who discovered the X rays (Nobel prize in 1901)
This page provides mineralogical data about Röntgenite-(Ce).

Classification of Röntgenite-(Ce)

IMA status:Approved 1987
Strunz 8th edition ID:5/C.07-90
Nickel-Strunz 10th (pending) edition ID:5.BD.20d

5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
D : With rare earth elements (REE)
Dana 8th edition ID:16a.1.6.1

16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)(XO3)Zq
Hey's CIM Ref.:12.1.16

12 : Carbonates with other anions
1 : Carbonates with halides
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Type Occurrence of Röntgenite-(Ce)

Type Locality:Narssârssuk pegmatite (Narsarsuk pegmatite), Narssârssuk (Narsarsuk), Igaliku (Igaliko), Narsaq, Kitaa (West Greenland) Province, Greenland

Occurrences of Röntgenite-(Ce)

Geological Setting:Pegmatites

Physical Properties of Röntgenite-(Ce)

Lustre:Waxy
Diaphaneity (Transparency):Transparent, Translucent
Colour:Yellow to brown, green
Hardness (Mohs):4½
Fracture:Sub-Conchoidal
Density (calculated):4.19 g/cm3

Crystallography of Röntgenite-(Ce)

Crystal System:Trigonal
Class (H-M):3 - Pyramidal
Space Group:R3
Cell Parameters:a = 7.13(3) Å, c = 69.4(2) Å
Ratio:a:c = 1 : 9.734
Unit Cell Volume:V 3,055.41 ų (Calculated from Unit Cell)
Z:9
Morphology:Hexagonal
Twinning:On (0001), rare
X-Ray Powder Diffraction:
d-spacingIntensity
23.13 (100)
11.57 (70)
7.71 (13)
4.627 (44)
3.565 (49)
2.824 (48)
2.058 (15)
1.941 (16)
1.881 (18)
Comments:ICDD-PDF 35-579

Optical Data of Röntgenite-(Ce)

Type:Uniaxial (+)
RI values: nω = 1.658 - 1.662 nε = 1.756
Maximum Birefringence:δ = 0.098

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High

Chemical Properties of Röntgenite-(Ce)

Formula:
Ca
 
2
(Ce,La)
 
3
[F
 
3
|(CO
 
3
)
 
5
]
Essential elements:C, Ca, Ce, F, O
All elements listed in formula:C, Ca, Ce, F, La, O

Relationship of Röntgenite-(Ce) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.BD.Arisite-(Ce)
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.20cSynchysite-(Ce)
Ca(Ce,La)[F|(CO
 
3
)
 
2
]
5.BD.20cSynchysite-(Nd)
Ca(Nd,Y,Gd)[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
]
12.1.15Synchysite-(Nd)
Ca(Nd,Y,Gd)[F|(CO
 
3
)
 
2
]
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 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 Röntgenite-(Ce)

Reference List:American Mineralogist (1953): 38: 392, 868-870, 932-963.

Yunxiang, Ni, John M. Hughes, and Anthony N. Mariano (1993) The atomic arrangement of bastnäsite-(Ce), Ce(CO3)F, and structural elements of synchysite-(Ce), röntgenite-(Ce), and parisite-(Ce). American Mineralogist: 78: 415-418.

Internet Links for Röntgenite-(Ce)

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Röntgenite-(Ce) details from Handbook of Mineralogy (PDF)
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    Localities for Röntgenite-(Ce)

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (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.
    Canada
     
    • Québec
      • Montérégie
        • Rouville RCM
          • Mont Saint-Hilaire
    		No reference listed
    China
     
    • Inner Mongolia Autonomous Region
      • Baotou League
        • Darhan Muminggan United Banner
          • Bayan Obo
            • Bayan Obo (Bayun-Obo; Baiyunebo) deposit
    		Pavel M. Kartashov data
    • Sichuan Province
      • Liangshan Autonomous Prefecture
        • Mianning Co.
    		Anthony, J.W. et al.: Handbook of Mineralogy
    France
     
    • Brittany
      • Morbihan
        • Grand-Champ
    		Pierre le Roc'h collection (analyzed by Yves Lulzac, BRGM Nantes, end May 2009)
    Greenland
     
    • Kitaa (West Greenland) Province
      • Narsaq
        • Igaliku (Igaliko)
          • Narssârssuk (Narsarsuk)
    		G. Donnay: Amer. Mineral. 38:868-870 (1953)
    Mongolia
     
    • Dornogovi Aimag
      • Hövsgöl
    		Kynický, J. & Samec, P. (2005): Hydrothermally-metasomatic and exsolution-like mineralization of the carbonatites from selected localities at Gobi. Mongolian Geoscientist. sv. 9, č. 27, s. 52-55.
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
        • Polar Yakutia
    		Pavel M. Kartashov analytical data
    South Korea
     
    • Chungcheongbukdo (Chungchong-pukto)
      • Chungju (Chung Won Kum; Chung-ju)
        • Joongwon-gun
          • Mt. Eorae
    		P.M. Kartashov data
    USA
     
    • Massachusetts
      • Norfolk Co.
    		Gleba, 1978. Massachusetts Mineral & Fossil Localities
    • Virginia
      • Augusta Co.
    		http://csmres.jmu.edu/geollab/baedke/dept/abs2002.pdf.
    Mineral and/or Locality
    Google
     
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