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Gadolinite-(Ce)

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Johan Gadolin
Formula:
(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Often slightly radioactive due to minor U and/or Th contents; therefore often metamict.
Colour:
Black
Lustre:
Vitreous
Hardness:
6½ - 7
Specific Gravity:
4.20
Crystal System:
Monoclinic
Name:
Named for its relationship to gadolinite-(Y), but with cerium as the dominant rare earth element. Gadolinite honors Johan Gadolin (5 June 1760, Turku, Finland - 15 August 1852, Mynämäki, Finland), chemist, physicist, and mineralogist.

Gadolinite-Datolite Group. The cerium analogue of Gadolinite-(Y) and Gadolinite-(Nd).
At the type locality, gadolinite-(Ce) often occurs with an orange or yellow alteration rim (up to 0.5 mm).

The Italian occurrences of gadolinite-(Ce) are not probed by analyses and most correctly they should be classified as "gadolinite" (s.l.).


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Classification of Gadolinite-(Ce)Hide

Approved
Approval Year:
1987
First Published:
1978
9.AJ.20

9 : SILICATES (Germanates)
A : Nesosilicates
J : Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4
54.2.1b.2

54 : NESOSILICATES Borosilicates and Some Beryllosilicates
2 : Borosilicates and Some Beryllosilicates with B in [4] coordination
14.3.24

14 : Silicates not Containing Aluminum
3 : Silicates of Be

Physical Properties of Gadolinite-(Ce)Hide

Vitreous
Colour:
Black
Comment:
Olive green in thin sections
Hardness:
6½ - 7 on Mohs scale
Fracture:
Conchoidal
Density:
4.20 g/cm3 (Measured)    

Optical Data of Gadolinite-(Ce)Hide

Type:
Isotropic
Pleochroism:
Non-pleochroic

Chemical Properties of Gadolinite-(Ce)Hide

Formula:
(Ce,La,Nd,Y)2Fe2+Be2Si2O10

Often slightly radioactive due to minor U and/or Th contents; therefore often metamict.
IMA Formula:
Fe2+Be2Ce2(SiO4)2O2

Crystallography of Gadolinite-(Ce)Hide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 9.8973 Å, b = 7.6282 Å, c = 4.7505 Å
β = 90.416°
Ratio:
a:b:c = 1.297 : 1 : 0.623
Unit Cell V:
358.65 ų (Calculated from Unit Cell)
Comment:
Space group P2/c was determined for material heated at 700oC

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.06 (42)
3.74 (37)
3.44 (34)
3.13 (86)
2.85 (100)
2.56 (46)
2.21 (33)
1.976 (30)
Comments:
Spacings for the material hydrothermally recrystallized at 700oC: 2.88 (100), 4.81 (90), 2.60 (80), 2.59 (80), 3.18 (70), 3.00 (70), and 3.59 (60)

Occurrences of Gadolinite-(Ce)Hide

Paragenetic Mode(s):

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Type Occurrence of Gadolinite-(Ce)Hide

General Appearance of Type Material:
Black irregular masses up to 20 mm in matrix
Chemical Analysis of Type Material:
SiO222.99 %
BeO8.83 %
Al2O30.02 %
B2O30.55 %
TiO20.25 %
FeO10.65 %
MnO1.89 %
MgO0.33 %
CaO2.15 %
Na2O0.11 %
K2O0.52 %
Y2O314.82 %
La2O39.07 %
Ce2O315.55 %
Total:87.73 %
Geological Setting of Type Material:
Syenite pegmatite
Associated Minerals at Type Locality:
Reference:
Segalstad, T. V. & Larsen, A. O. (1978): Gadolinite-(Ce) from Skien, southwestern Oslo Region, Norway. American Mineralogist 63: 188-195

Other Language Names for Gadolinite-(Ce)Hide

Simplified Chinese:硅铍铈矿
Traditional Chinese:矽鈹鈰礦

Relationship of Gadolinite-(Ce) to other SpeciesHide

Other Members of this group:
Calcybeborosilite-(Y)(Y,Ca)2(□,Fe2+)(B,Be)2[SiO4]2(OH,O)2Mon.
Gadolinite-(Nd)Nd2Fe2+Be2O2(SiO4)2Mon. 2/m : P21/b
Gadolinite-(Y)Y2Fe2+Be2Si2O10Mon. 2/m : P21/b
Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
Hingganite-(Yb)(Yb,Y,REE)2□Be2[SiO4]2(OH)2
Minasgeraisite-(Y)CaBe2Y2Si2O10Mon. 2/m : P21/b
Unnamed (OH-analogue of gadolinite-(Y))(Y,Ca)2(Fe,☐)Be2Si2O8(OH,O)2Mon. 2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Thorite2 photos of Gadolinite-(Ce) associated with Thorite on mindat.org.
Xenotime-(Y)2 photos of Gadolinite-(Ce) associated with Xenotime-(Y) on mindat.org.
Adularia2 photos of Gadolinite-(Ce) associated with Adularia on mindat.org.
Monazite-(Ce)2 photos of Gadolinite-(Ce) associated with Monazite-(Ce) on mindat.org.
Fluorite1 photo of Gadolinite-(Ce) associated with Fluorite on mindat.org.
Albite1 photo of Gadolinite-(Ce) associated with Albite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.AJ.05Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2Orth. mmm (2/m 2/m 2/m)
9.AJ.05Ominelite(Fe2+,Mg)(Al,Fe3+)3(SiO4)(BO3)O2Orth. mmm (2/m 2/m 2/m)
9.AJ.10Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3Orth. mmm (2/m 2/m 2/m)
9.AJ.10Holtite(Ta0.60.4)Al6BSi3O18(O,OH)2.25Orth. mmm (2/m 2/m 2/m) : Pnma
9.AJ.10Magnesiodumortierite(Mg,Ti,◻(Al,Mg)2Al4Si3O18-y(OH)yB y = 2-3Orth.
9.AJ.15GarrelsiteBa3NaSi2B7O16(OH)4Mon.
9.AJ.20BakeriteCa4(H5B5Si3O20)Mon. 2/m : P21/b
9.AJ.20DatoliteCa(HBSiO5)Mon. 2/m : P21/b
9.AJ.20Gadolinite-(Y)Y2Fe2+Be2Si2O10Mon. 2/m : P21/b
9.AJ.20Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
9.AJ.20Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
9.AJ.20Hingganite-(Yb)(Yb,Y,REE)2□Be2[SiO4]2(OH)2
9.AJ.20HomiliteCa2(Fe2+,Mg)B2Si2O10Mon.
9.AJ.20Melanocerite-(Ce)(Ce,Ca)5(SiO4,BO4)3(OH,0)Hex.
9.AJ.20Minasgeraisite-(Y)CaBe2Y2Si2O10Mon. 2/m : P21/b
9.AJ.20Calcybeborosilite-(Y)(Y,Ca)2(□,Fe2+)(B,Be)2[SiO4]2(OH,O)2Mon.
9.AJ.25Stillwellite-(Ce)(Ce,La,Ca)BSiO5
9.AJ.30Cappelenite-(Y)Ba(Y,Ce)6Si3B6O24F2Trig. 3 : P3
9.AJ.35Okanoganite-(Y)(Na,Ca)3(Y,Ce)12Si6B2O27F14
9.AJ.35Vicanite-(Ce)(Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7Trig.
9.AJ.35Hundholmenite-(Y)(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48Trig. 3m : R3m
9.AJ.35Proshchenkoite-(Y)Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14Trig. 3m : R3m
9.AJ.40JadariteLiNaSiB3O7(OH)Mon. 2/m

Related Minerals - Dana Grouping (8th Ed.)Hide

54.2.1b.1BakeriteCa4(H5B5Si3O20)Mon. 2/m : P21/b
54.2.1b.3Gadolinite-(Y)Y2Fe2+Be2Si2O10Mon. 2/m : P21/b
54.2.1b.4Calciogadolinite-(Y)(YCa)2Fe3+Be2[SiO4]2O2
54.2.1b.5HomiliteCa2(Fe2+,Mg)B2Si2O10Mon.
54.2.1b.6Minasgeraisite-(Y)CaBe2Y2Si2O10Mon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.3.1PhenakiteBe2SiO4Trig. 3 : R3
14.3.2BertranditeBe4(Si2O7)(OH)2Orth. mm2 : Cmc21
14.3.3BerylliteBe3(SiO4)(OH)2 · H2OOrth.
14.3.4LiberiteLi2BeSiO4Mon. m : Pm
14.3.5ChkaloviteNa2BeSi2O6Orth. mm2 : Fdd2
14.3.6EudidymiteNa2Be2Si6O15 · H2OMon. 2/m : B2/b
14.3.7EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
14.3.8GugiaiteCa2Be(Si2O7)Tet.
14.3.9Jeffreyite(Ca,Na)2(Be,Al)(Si2O7,HSi2O7)Orth.
14.3.10Semenovite-(Ce)Na8Ca2FeBe6Ce2Si14O40(OH)4F4Orth. mmm (2/m 2/m 2/m)
14.3.11BaryliteBe2Ba(Si2O7)Orth.
14.3.12Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
14.3.13Hingganite-(Yb)(Yb,Y,REE)2□Be2[SiO4]2(OH)2
14.3.14Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
14.3.15Minasgeraisite-(Y)CaBe2Y2Si2O10Mon. 2/m : P21/b
14.3.16SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
14.3.17TrimeriteCaMn2+2Be3(SiO4)3Mon. 2/m : P21/m
14.3.18ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2OMon. 2/m : P21/b
14.3.19Tvedalite(Ca,Mn)4Be3Si6O17(OH)4 · 3H2OOrth.
14.3.20HarstigiteCa6(Mn,Mg)Be4Si6(O,OH)24Orth.
14.3.21SverigeiteNaMnMgSnBe2(SiO4)3(OH)Orth. mmm (2/m 2/m 2/m) : Imma
14.3.22Joesmithite{Pb}{Ca2}{Mg3Fe3+2}(Be2Si6O22)(OH)2Mon.
14.3.23Gadolinite-(Y)Y2Fe2+Be2Si2O10Mon. 2/m : P21/b
14.3.25Calciogadolinite-(Y)(YCa)2Fe3+Be2[SiO4]2O2

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 Gadolinite-(Ce)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Segalstad, T.V., Larsen, A.O. (1978) Gadolinite-(Ce) from Skien, southern Oslo region, Norway. American Mineralogist: 63: 188-195.
Anthony, J.W., Bideaux, R.A., Bladh, K.W., Nichols, M.C., Eds. Handbook of Mineralogy, Mineralogical Society of America, Chantilly, VA 20151-1110, USA. http://www.handbookofmineralogy.org/ (2016)

Internet Links for Gadolinite-(Ce)Hide

Localities for Gadolinite-(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.
Austria
 
  • Salzburg
    • Hohe Tauern
      • Gastein valley
        • Böckstein
Wittern A., Taschenbuch der Mineralienfundstellen Mitteleuropas, Österreich, 1994, S.22
      • Habach Valley
        • Nasenkopf
          • Leckbachgraben (Leckbachrinne)
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
Germany
 
  • Lower Saxony
    • Harz
      • Bad Harzburg
        • Radau valley
No reference listed
Italy
 
  • Latium
    • Rome Province
      • Sacrofano Caldera
        • Campagnano di Roma
In the collection of Brent Thorne. Acquired from Systematica minerals.
    • Viterbo Province
      • Vico Lake
No reference listed
Carlini, R., Signoretti, E., 2003. Località minori del vulcano Vicano: Villa S.Giovanni in Tuscia e Mazzocchio. Il Cercapietre. Not. del Gruppo Mineralogico Romano, 1-2: 33-41
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Baveno
        • Oltrefiume
          • Mount Camoscio
Grill, E. (1935): I minerali del granito di Baveno, la fayalite. Periodico di Mineralogia, 129-133. - Gallitelli, P. (1936): Le miche del granito di Baveno. . Periodico di Mineralogia, 61-76 - Pagliani, G. (1948): Le Zeoliti del granito di Baveno. Periodico di Mineralogia, 175-188. - Ravagnani, D. (1974): I giacimenti uraniferi italiani - Gruppo Mineralogico Lombardo - Museo Civico di Storia Naturale di Milano, Ed., Milano, 188 pp. - min. Rec. 14 (3), 157-168 - Am. Min. 83, 1330-1334 (1998) - Am. Min. 84, 782-789 (1999). - Guastoni, A. & Pezzotta, F. (2004): Kristiansenite a Baveno, second ritrovamento Mondiale della specie. Rivista Mineralogica Italiana, 4/2004, 247-251. - Guastoni, A., Demartin, F., Pezzotta, F. (2004): Sekaninaite delle pegmatiti granitiche di Feriolo e Baveno (VB). Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano, 145, 59-68. - Mineralogist americano (2005) 90, 1442-1452.
American Mineralogist, 84(5-6), 782-789
  • Trentino-Alto Adige (Trentino-Südtirol)
    • Bolzano Province (South Tyrol)
      • Vizze Valley (Pfitsch Valley)
        • San Giacomo (Sankt Jakob)
          • Vizze Pass (Pfitsch Pass; Pfitscher Joch)
Folie, K., Gentile, P., Hanke, M., Rocchetti, I. (2010): Mineralien aus der Umgebung des Pfitscher Jochs in Südtirol (II). Mineralien-Welt, 21, 4, 42-67.
Norway (TL)
 
  • Telemark
    • Porsgrunn
      • Bjørkedalen
Segalstad, T. V. & Larsen, A. O. (1978): Gadolinite-(Ce) from Skien, southwestern Oslo Region, Norway. American Mineralogist 63: 188-195
Knut Eldjarn
      • Langangen
        • Kokkersvold E18 roadcuts
Raade, G., Åmli, R., Mladeck, H., Din. V. K., Larsen, A.O. & Åsheim, A. (1983): Chiavennite from syenite pegmatites in the Oslo Region, Norway. American Mineralogist. 68: 628-633
      • Mørje
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
  • Vestfold
    • Larvik
      • Hedrum
        • Lågendalen
Larsen, A. O., Raade, G. & Sæbø, P. C. (1992): Lorenzenite from the Bratthagen nepheline syenite pegmatites, Lågendalen, Oslo Region, Norway. Norsk Geologisk Tidsskrift, 72, 381-384.
      • Malerød
Andresen, P. (2011): Mineralene fra Midtfjellet larvikittbrudd, Malerød, Larvik. Norsk Bergverksmuseum Skrift. 46: 41-47
Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 p
      • Tjølling
        • Håkestad
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
        • Klåstad
Hansen, R.(1981): Mineralnotater. NAGS-nytt 8(4),18
Svein A. Berge collection
        • Stålaker
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
      • Tvedalen
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
Collection of Peter Andresen.
Andersen, F., Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. Mineralien-Welt 7 (4), 21-100
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
Andresen, P. (2013): Gedigent bly og andre spennende mineraler fra en unik pegmatitt i Tvedalen. Norsk Bergverksmuseum Skrifter. 50, 83-87
Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71
Pakistan
 
  • Khyber Pakhtunkhwa (North-West Frontier Province)
    • Peshawar
      • Hameed Abad Kafoor Dheri
RUFF
Russia
 
  • Northern Region
    • Murmanskaya Oblast'
www.koeln.netsurf.de/~w.steffens/khib.htm
        • Kukisvumchorr Mt
          • East slope
European Journal of Mineralogy 19, 95-103(2007)
Sweden
 
  • Västmanland
    • Norberg
Nysten,P. & Gustafsson, L.(2006): I jakt på sällsynta mineral. Geologiskt forum nr 49, 22-25
Nysten,P. & Gustafsson, L.(2006): I jakt på sällsynta mineral. Geologiskt forum nr 49, 22-25;Holtstam, D., Andersson, U.B. (2007): The REE minerals of the Bastnäs-type deposits, South-Central Sweden. Canadian Mineralogist. 45, 1073-1114
      • Röberg ore field
Nysten,P. & Gustafsson, L.(2006): I jakt på sällsynta mineral. Geologiskt forum nr 49, 22-25
    • Skinnskatteberg
      • Riddarhyttan
Öhman, L. , Nysten, P. and Langhof, J. (2005): Nya Bastnäs i Riddarhytte malmfält. Litiofilen, 22 (1): 14-38; Holtstam, D., Andersson, U.B. (2007): The REE minerals of the Bastnäs-type deposits, South-Central Sweden. Canadian Mineralogist. 45, 1073-1114
USA
 
  • Colorado
    • Jefferson Co.
      • Clear Creek pegmatite Province
Minerals of Colorado (1997) Eckels, E. B.; USGS Prof. Paper 227
      • South Platte Pegmatite District
Minerals of Colorado (1997) Eckels, E. B.
Minerals of Colorado (1997) Eckels, E. B.
Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
  • New Hampshire
    • Grafton Co.
      • Bethlehem
Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
  • Washington
    • Okanogan Co.
      • Golden Horn Batholith
Metamict crystal identified by XRD after annealing at 700° for 48 hours by John Attard, 12Dec08. Results indicated a distinct match to type material from the Oslo, Norway area as reported by Segalstad and Larsen, American Mineralogist, V 63, 1973, "Gadolinite-(Ce) from Skien, southwestern Oslo region, Norway." Over forty EDS spectra accomplished by Saul Krotki, with John Attard and Bart Cannon, confirm the cerium dominant species differing from previously reported yttrium dominant species from WA Pass. Here only the outermost skins of the crystals are yttrium dominant.
Mineral and/or Locality  
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