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Röntgenite-(Ce)

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

Show Röntgenite-(Ce) Photos (5)



Formula:
Ca
 
2
(Ce,La)
 
3
(CO
 
3
)
 
5
F
 
3
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)


Needs reinvestigation by modern methods.

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
(CO
 
3
)
 
5
F
 
3
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.05Cordylite-(Ce)
NaBaCe
 
2
(CO
 
3
)
 
4
F
5.BD.05Lukechangite-(Ce)
Na
 
3
Ce
 
2
(CO
 
3
)
 
4
F
5.BD.10Zhonghuacerite-(Ce)
Ba
 
2
Ce(CO
 
3
)
 
3
F
5.BD.10Kukharenkoite-(Ce)
Ba
 
2
Ce(CO
 
3
)
 
3
F
5.BD.10Kukharenkoite-(La)
Ba
 
2
(La,Ce,Th)(CO
 
3
)
 
3
F
5.BD.15Cebaite-(Ce)
Ba
 
3
Ce
 
2
(CO
 
3
)
 
5
F
 
2
5.BD.15Cebaite-(Nd)
Ba
 
3
(Nd,Ce)
 
2
(CO
 
3
)
 
5
F
 
2
5.BD.18Arisite-(Ce)
NaCe
 
2
(CO
 
3
)
 
3-x
F
 
2x+1
5.BD.18Arisite-(La)
NaLa
 
2
(CO
 
3
)
 
3-x
F
 
2x+1
5.BD.20aBastnäsite-(Ce)
(Ce,La)(CO
 
3
)F
5.BD.20aBastnäsite-(La)
(La,Ce)(CO
 
3
)F
5.BD.20aBastnäsite-(Y)
(Y,Ce)(CO
 
3
)F
5.BD.20aHydroxylbastnäsite-(Ce)
(Ce,La)(CO
 
3
)(OH,F)
5.BD.20aHydroxylbastnäsite-(Nd)
(Nd,Ce,La)(CO
 
3
)(OH,F)
5.BD.20aHydroxylbastnäsite-(La)
(La,Nd,Ce)(CO
 
3
)(OH,F)
5.BD.20bParisite-(Ce)
Ca(Ce,La)
 
2
(CO
 
3
)
 
3
F
 
2
5.BD.20bParisite-(Nd)
Ca(Nd,Ce,La)
 
2
(CO
 
3
)
 
3
F
 
2
5.BD.20cSynchysite-(Ce)
Ca(Ce,La)(CO
 
3
)
 
2
F
5.BD.20cSynchysite-(Nd)
Ca(Nd,Y,Gd)(CO
 
3
)
 
2
F
5.BD.20cSynchysite-(Y)
Ca(Y,Ce)(CO
 
3
)
 
2
F
5.BD.20aThorbastnäsite
Th(Ca,Ce)(CO
 
3
)
 
2
F
 
2
 · 3H
 
2
O
5.BD.20aBastnäsite-(Nd)
Nd(CO
 
3
)F
5.BD.25Horváthite-(Y)
NaY(CO
 
3
)F
 
2
5.BD.25Qaqarssukite-(Ce)
Ba(Ce,REE)(CO
 
3
)
 
2
F
5.BD.35Huanghoite-(Ce)
BaCe(CO
 
3
)
 
2
F
Related Minerals - Hey's Index Grouping:

- +
12.1.1Northupite
Na
 
3
Mg(CO
 
3
)
 
2
Cl
12.1.2Barentsite
Na
 
7
Al(HCO
 
3
)
 
2
(CO
 
3
)
 
2
F
 
4
12.1.3Rouvilleite
Na
 
3
(Ca,Mn,Fe)
 
2
(CO
 
3
)
 
3
F
12.1.4Chlormagaluminite
Mg
 
4
Al
 
2
(OH)
 
12
Cl
 
2
 · 3H
 
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
(CO
 
3
)F
 
2
12.1.7Stenonite
(Sr,Ba,Na)
 
2
Al(CO
 
3
)F
 
5
12.1.8Bastnäsite-(Ce)
(Ce,La)(CO
 
3
)F
12.1.9Bastnäsite-(La)
(La,Ce)(CO
 
3
)F
12.1.10Bastnäsite-(Y)
(Y,Ce)(CO
 
3
)F
12.1.11Parisite-(Ce)
Ca(Ce,La)
 
2
(CO
 
3
)
 
3
F
 
2
12.1.12Parisite-(Nd)
Ca(Nd,Ce,La)
 
2
(CO
 
3
)
 
3
F
 
2
12.1.13Synchysite-(Ce)
Ca(Ce,La)(CO
 
3
)
 
2
F
12.1.14Synchysite-(Y)
Ca(Y,Ce)(CO
 
3
)
 
2
F
12.1.15Synchysite-(Nd)
Ca(Nd,Y,Gd)(CO
 
3
)
 
2
F
12.1.17Cordylite-(Ce)
NaBaCe
 
2
(CO
 
3
)
 
4
F
12.1.19Huanghoite-(Ce)
BaCe(CO
 
3
)
 
2
F
12.1.20Zhonghuacerite-(Ce)
Ba
 
2
Ce(CO
 
3
)
 
3
F
12.1.21Cebaite-(Ce)
Ba
 
3
Ce
 
2
(CO
 
3
)
 
5
F
 
2
12.1.22Thorbastnäsite
Th(Ca,Ce)(CO
 
3
)
 
2
F
 
2
 · 3H
 
2
O
12.1.23Phosgenite
Pb
 
2
CO
 
3
Cl
 
2
12.1.24Barstowite
Pb
 
4
Cl
 
6
(CO
 
3
) · H
 
2
O
12.1.25Albrechtschraufite
Ca
 
4
Mg(UO
 
2
)
 
2
(CO
 
3
)
 
6
F
 
2
 · 17H
 
2
O
12.1.26Kettnerite
CaBiCO
 
3
OF

Other Names for Röntgenite-(Ce)

Other Languages:
German:Röntgenit-(Ce)

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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  • Röntgenite-(Ce) details from Handbook of Mineralogy (PDF)
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    • Localities for Röntgenite-(Ce)

    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.
    Hide Locality List
    (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
     
    • Ontario
      • Thunder Bay District
        • Marathon
    		McLaughlin (1990)
    • Québec
      • Montérégie
        • Rouville RCM
          • Mont Saint-Hilaire
    		No reference listed
    China
     
    • Inner Mongolia Autonomous Region
      • Baotou League (Baotou Prefecture)
        • Bayan Obo Mining District
          • 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
      • Finistère
        • Guilligomarc'h
    		analysed at CNRS Nantes
      • 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.
    • Hovd Aimag (Khovd Aimag)
      • Altai Mts
        • Khaldzan Buragtag massif
    		Pavel M. Kartashov analytical data (2012), specimens selfcollected in 1990
    Romania
     
    • Harghita Co.
      • Ditrău (Ditró)
    		Szakáll, S. & Kristály, F., Eds. (2010): Mineralogy of Székelyland, Eastern Transylvania, Romania. Csík County Nature and Conservation Society, Miercurea-Ciuc, Romania, 321 pp.
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
        • Polar Yakutia
    		Pavel M. Kartashov analytical data
    Slovakia
     
    • Banská Bystrica Region
      • Rimavská Sobota Co.
        • Tisovec
    		Ondrejka M., Uher P., Pršek J., Ozdín D., 2007: Arsenian monazite-(Ce) and xenotime-(Y), REE arsenates and carbonates from the Tisovec-Rejkovo rhyolite, Western Carpathians, Slovakia: Composition and substitutions in the (REE,Y)XO4 system (X = P, As, Si, Nb, S). Lithos, 95, 116-129.
    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
    • New Hampshire
      • Carroll Co.
        • Conway
          • Redstone
    		Caruso, Louis; Simmons, Gene (1985). Uranium and microcracks in a 1,000-meter core, Redstone, New Hampshire (Contributions to Mineralogy and Petrology, Volume 90, Issue 1, pp.1-17)
    • Virginia
      • Augusta Co.
    		http://csmres.jmu.edu/geollab/baedke/dept/abs2002.pdf.
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. 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. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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