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Röntgenite-(Ce)

A valid IMA mineral species - grandfathered
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Photos of Röntgenite-(Ce) (3)
Search Photos of Röntgenite-(Ce)
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Ca2(Ce,La)3(CO3)5F3
Colour:
Yellow to brown, green
Lustre:
Waxy
Hardness:
4½
Specific Gravity:
4.19 (Calculated)
Crystal System:
Trigonal
Name:
Named in honor of Wilhelm Conrad Röntgen (27 March 1845, Lennep, German Confederation - 10 February 1923, Munich, Bavaria, Weimar Republic), physicist who discovered X-rays, because X-rays alone were used to prove the existence of the species. For his discovery of X-rays, Röntgen was awarded the 1901 Nobel Prize in Physics. The radioactive element roentgenium and a minor planet are also named in his honor. The species was originally named simply röntgenite (and appears in print as roentgenite); the suffix was added in 1987 by the IMA to denote the dominant REE.
Type Locality:
ⓘNarssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland
Needs reinvestigation by modern methods.

Cf.parisite-(Ce),synchysite-(Ce).


Unique Identifiers
IMA status notes:
Renamed by the IMA
IMA Formula:
Ca2Ce3(CO3)5F3
Approval year:
1987
First published:
1953

Classification of Röntgenite-(Ce)
Dana 8th ed.:
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

Mineral Symbols
Transparency:
Transparent, Translucent
Colour:
Yellow to brown, green
Hardness:
4½ onMohs scale
Fracture:
Sub-Conchoidal
Density:
4.19 g/cm3 (Calculated)

Optical Data of Röntgenite-(Ce)
Surface Relief:
High

Chemistry of Röntgenite-(Ce)

Crystallography of Röntgenite-(Ce)
General Appearance of Type Material:
Intimately intergrown with synchisite, parisite, and bastnaesite, simulating single crystals.
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA, 84233.
National Museum of Natural History, Washington, D.C., USA, R2609, R2613, R2615.
Geological Setting of Type Material:
A late-stage hydrothermal mineral in granite pegmatite.
Associated Minerals at Type Locality:
BastnäsiteParisiteSynchysite

Synonyms of Röntgenite-(Ce)

Other Language Names for Röntgenite-(Ce)

Common AssociatesHex. 6/mmm(6/m2/m2/m) :P63/mmc5.BD.05Cordylite-(Ce)NaBaCe2(CO3)4FHex. 6/mmm(6/m2/m2/m) :P63/mmc5.BD.05Unnamed (Cordylite-like (Ca0.5[]0.5)BaCe2[CO3]4F)Ca◻Ba2Ce4[CO3]8F25.BD.05Lukechangite-(Ce)Na3Ce2(CO3)4FHex. 6mm :P63mc5.BD.10Zhonghuacerite-(Ce)Ba2Ce(CO3)3FTrig.5.BD.10Kukharenkoite-(Ce)Ba2Ce(CO3)3FMon. 2/m :P21/m5.BD.10Kukharenkoite-(La)Ba2(La,Ce,Th)(CO3)3FMon. 2/m :P21/m5.BD.15Cebaite-(Ce)Ba3Ce2(CO3)5F2Mon. 2/m :B2/m5.BD.15Cebaite-(Nd)Ba3(Nd,Ce)2(CO3)5F2Mon.5.BD.18Arisite-(Ce)NaCe2(CO3)2[F2x(CO3)1-x]FHex.6m2 :P6m25.BD.18Arisite-(La)NaLa2(CO3)2[F2x(CO3)1-x]FHex.6m2 :P6m25.BD.20cSynchysite-(Ce)CaCe(CO3)2FMon. 2/m :B2/b5.BD.20cSynchysite-(Nd)CaNd(CO3)2FOrth.5.BD.20cSynchysite-(Y)CaY(CO3)2FMon. 2/m :B2/b5.BD.20aBastnäsite-(Ce)Ce(CO3)FHex.6m2 :P6c25.BD.20bParisite-(Ce)CaCe2(CO3)3F2Mon.m :Bb5.BD.20aBastnäsite-(La)La(CO3)FHex.6m2 :P62c5.BD.20bParisite-(Nd)Ca(Nd,Ce,La)2(CO3)3F2Mon.m :Bb5.BD.20aBastnäsite-(Y)Y(CO3)FHex.6m2 :P62c5.BD.20bParisite-(La)CaLa2(CO3)3F2Mon.5.BD.20aThorbastnäsiteThCa(CO3)2F2 · 3H2OHex.6m2 :P62c5.BD.20aHydroxylbastnäsite-(Ce)Ce(CO3)(OH)Hex.6 :P65.BD.20aHydroxylbastnäsite-(Nd)Nd(CO3)(OH)Hex.6m2 :P62c5.BD.20cHydroxylsynchysite-(Ce)Ca(Ce,La)(CO3)2(OH)5.BD.20cSynchysite-(La)Ca(La,Nd)(CO3)2F5.BD.20aBastnäsite-(Nd)Nd(CO3)FHex.6m2 :P62c5.BD.20aHydroxylbastnäsite-(La)(La,Nd,Ce)(CO3)(OH,F)Hex.6 :P65.BD.25Qaqarssukite-(Ce)Ba(Ce,REE)(CO3)2FTrig. 3 :P35.BD.25Horváthite-(Y)NaY(CO3)F2Orth.mmm(2/m2/m2/m) :Pmmn5.BD.35Huanghoite-(Ce)BaCe(CO3)2FTrig.3m(32/m) :R3m5.BD.45Bayanoboite-(Y)Ba2Y(CO3)2F3Orth.mmm(2/m2/m2/m) :Pbcn

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    • References for Röntgenite-(Ce)ⓘToongi depositSpandler et al. (2016)+1 other reference
    Canada
     
    McLaughlin (1990)HORVÁTH et al. (2000)+1 other reference
    China
     
    Pavel.M. Kartashov (n.d.)Anthony
    Colombia
     
    Zeug et al. (2021)
    France
     
    PERINET F. (2014)analysed at CNRS NantesPierre le Roc'h collection (analyzed by Yves Lulzac, BRGM Nantes, end May 2009)
    Germany
     
    Wand et al. (1989)+3 other references
    Greenland (TL)
     
    Donnay (1953)
    Mongolia
     
    Kynický et al. (2005)+1 other referencePavel M. Kartashov analytical data (2012)
    Namibia
     
    Lohmeier et al. (2023)
    Romania
     
    Szakáll et al. (2010)
    Russia
     
    A.V. Kasatkin et al. (2019)Pavel.M. Kartashov (n.d.)
    Slovakia
     
    Ondrejka M. et al. (Ce)
    South Korea
     
    Pavel.M. Kartashov (n.d.)
    USA
     
    Gleba (2008)Caruso+1 other referencecsmres.jmu.edu (n.d.)
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