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Röntgenite-(Ce)

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Wilhelm Conrad Röntgen
Formula:
Ca2(Ce,La)3(CO3)5F3
Colour:
Yellow to brown, green
Lustre:
Waxy
Hardness:
Specific Gravity:
4.19 (Calculated)
Crystal System:
Trigonal
Name:
For Wilhelm Conrad Röntgen (1845-1923), German physicist, who discovered the X rays (Nobel prize in 1901)
Needs reinvestigation by modern methods.

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


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Classification of Röntgenite-(Ce)Hide

Approved, 'Grandfathered' (first described prior to 1959)
Approval Year:
1987
5.BD.20d

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

16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)(XO3)Zq
12.1.16

12 : Carbonates with other anions
1 : Carbonates with halides

Physical Properties of Röntgenite-(Ce)Hide

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

Optical Data of Röntgenite-(Ce)Hide

Type:
Uniaxial (+)
RI values:
nω = 1.658 - 1.662 nε = 1.756
Max Birefringence:
δ = 0.098
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of Röntgenite-(Ce)Hide

Formula:
Ca2(Ce,La)3(CO3)5F3
IMA Formula:
Ca2Ce3(CO3)5F3

Crystallography of Röntgenite-(Ce)Hide

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 V:
3,055.41 ų (Calculated from Unit Cell)
Z:
9
Morphology:
Hexagonal
Twinning:
On (0001), rare.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
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

Type Occurrence of Röntgenite-(Ce)Hide

Other Language Names for Röntgenite-(Ce)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Huanghoite-(Ce)2 photos of Röntgenite-(Ce) associated with Huanghoite-(Ce) on mindat.org.
Aegirine2 photos of Röntgenite-(Ce) associated with Aegirine on mindat.org.
Ferriallanite-(Ce)1 photo of Röntgenite-(Ce) associated with Ferriallanite-(Ce) on mindat.org.
Fluorite1 photo of Röntgenite-(Ce) associated with Fluorite on mindat.org.
Franconite1 photo of Röntgenite-(Ce) associated with Franconite on mindat.org.
Thorbastnäsite1 photo of Röntgenite-(Ce) associated with Thorbastnäsite on mindat.org.
Fluorapatite1 photo of Röntgenite-(Ce) associated with Fluorapatite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

5.BD.05Cordylite-(Ce)NaBaCe2(CO3)4F Hex.
5.BD.05Lukechangite-(Ce)Na3Ce2(CO3)4FHex. 6mm : P63mc
5.BD.10Zhonghuacerite-(Ce)Ba2Ce(CO3)3FTrig.
5.BD.10Kukharenkoite-(Ce)Ba2Ce(CO3)3FMon. 2/m : P21/m
5.BD.10Kukharenkoite-(La)Ba2(La,Ce,Th)(CO3)3FMon. 2/m : P21/m
5.BD.15Cebaite-(Ce)Ba3Ce2(CO3)5F2
5.BD.15Cebaite-(Nd)Ba3(Nd,Ce)2(CO3)5F2Mon.
5.BD.18Arisite-(Ce)NaCe2(CO3)2[F2x(CO3)1-x]FHex. 6 m2 : P6m2
5.BD.18Arisite-(La)NaLa2(CO3)2[F2x(CO3)1-x]FHex. 6 m2 : P6m2
5.BD.20aBastnäsite-(Ce)Ce(CO3)FHex. 6 m2 : P6c2
5.BD.20aBastnäsite-(La)La(CO3)FHex.
5.BD.20aBastnäsite-(Y)Y(CO3)FHex. 6 m2 : P62c
5.BD.20aHydroxylbastnäsite-(Ce)Ce(CO3)(OH)Hex. 6 : P6
5.BD.20aHydroxylbastnäsite-(Nd)Nd(CO3)(OH)Hex.
5.BD.20aHydroxylbastnäsite-(La)(La,Nd,Ce)(CO3)(OH,F)Hex.
5.BD.20bParisite-(Ce)CaCe2(CO3)3F2Mon. m : Bb
5.BD.20bParisite-(Nd)Ca(Nd,Ce,La)2(CO3)3F2
5.BD.20cSynchysite-(Ce)CaCe(CO3)2FMon. 2/m : B2/b
5.BD.20cSynchysite-(Nd)CaNd(CO3)2F
5.BD.20cSynchysite-(Y)CaY(CO3)2FMon. 2/m : B2/b
5.BD.20aThorbastnäsiteThCa(CO3)2F2 · 3H2O
5.BD.20aBastnäsite-(Nd)Nd(CO3)F Hex. 6 m2 : P62c
5.BD.25Horváthite-(Y)NaY(CO3)F2Orth. mmm (2/m 2/m 2/m) : Pmmn
5.BD.25Qaqarssukite-(Ce)Ba(Ce,REE)(CO3)2FTrig. 3 : P3
5.BD.35Huanghoite-(Ce)BaCe(CO3)2FTrig. 3m (3 2/m) : R3m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

12.1.1NorthupiteNa3Mg(CO3)2ClIso. m3 (2/m 3) : Fd3
12.1.2BarentsiteNa7Al(HCO3)2(CO3)2F4Tric.
12.1.3RouvilleiteNa3(Ca,Mn,Fe)2(CO3)3FMon. 2/m : B2/b
12.1.4ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex.
12.1.5DeferniteCa6(CO3)2-x(SiO4)x(OH)7(Cl,OH)1-2x (x<0.5)Orth. mmm (2/m 2/m 2/m) : Pnma
12.1.6BrenkiteCa2(CO3)F2Orth.
12.1.7Stenonite(Sr,Ba,Na)2Al(CO3)F5Mon. 2/m
12.1.8Bastnäsite-(Ce)Ce(CO3)FHex. 6 m2 : P6c2
12.1.9Bastnäsite-(La)La(CO3)FHex.
12.1.10Bastnäsite-(Y)Y(CO3)FHex. 6 m2 : P62c
12.1.11Parisite-(Ce)CaCe2(CO3)3F2Mon. m : Bb
12.1.12Parisite-(Nd)Ca(Nd,Ce,La)2(CO3)3F2
12.1.13Synchysite-(Ce)CaCe(CO3)2FMon. 2/m : B2/b
12.1.14Synchysite-(Y)CaY(CO3)2FMon. 2/m : B2/b
12.1.15Synchysite-(Nd)CaNd(CO3)2F
12.1.17Cordylite-(Ce)NaBaCe2(CO3)4F Hex.
12.1.19Huanghoite-(Ce)BaCe(CO3)2FTrig. 3m (3 2/m) : R3m
12.1.20Zhonghuacerite-(Ce)Ba2Ce(CO3)3FTrig.
12.1.21Cebaite-(Ce)Ba3Ce2(CO3)5F2
12.1.22ThorbastnäsiteThCa(CO3)2F2 · 3H2O
12.1.23PhosgenitePb2CO3Cl2Tet. 4/mmm (4/m 2/m 2/m) : P4/mbm
12.1.24BarstowitePb4Cl6(CO3) · H2OMon. 2/m : P21/m
12.1.25AlbrechtschraufiteCa4Mg(UO2)2(CO3)6F2 · 17-18H2OTric. 1 : P1
12.1.26KettneriteCaBiCO3OFOrth. mmm (2/m 2/m 2/m)

Other InformationHide

Health Risks:
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)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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)Hide

Localities for Röntgenite-(Ce)Hide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Canada
 
  • Ontario
    • Thunder Bay District
McLaughlin (1990)
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
HORVÁTH, L. and HORVÁTH-PFENNINGER, E. (2000) Die Mineralien des Mont Saint-Hilaire. Lapis, 25, Nr. 7/8, 23-61 (in German).; HORVÁTH, L., PFENNINGER‑HORVÁTH, E. (2000) I minerali di Mont-Saint-Hilaire (Québec, Canada) Rivista Mineralogica Italiana, XXIV, 140-202 (in Italian with English summary).
China
 
  • Inner Mongolia Autonomous Region
    • Baotou League (Baotou Prefecture)
      • Bayan Obo Mining District
        • Bayan Obo
          • Bayan Obo deposit (Bayun-Obo deposit; Baiyunebo deposit)
Pavel M. Kartashov data
  • Sichuan Province
    • Liangshan Autonomous Prefecture
      • Mianning Co.
Anthony, J.W. et al.: Handbook of Mineralogy
France
 
  • Auvergne-Rhône-Alpes
    • Haute-Loire
      • Langeac
        • Marsanges
PERINET F. (2014) - Minéraux des terres rares de Marsanges (Haute Loire). Le Cahier des Micromonteurs N° 123 pp. 18-22
  • 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 (TL)
 
  • Kujalleq
    • Narsaq
      • Igaliku (Igaliko)
        • Narsaarsuk Plateau
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
    • Sakha Republic (Saha 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.
      • Parnassus
http://csmres.jmu.edu/geollab/baedke/dept/abs2002.pdf.
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