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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.
System:
Monoclinic
Colour:
Black
Lustre:
Vitreous
Hardness:
6½ - 7
Name:
Named after J. Gadolin and for cerium as its dominant rare earth element.
Gadolinite-Datolite Group. The cerium analogue of Gadolinite-(Y).

Classification of Gadolinite-(Ce)

Approved 1987
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
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First Recorded Occurrence of Gadolinite-(Ce)

Physical Properties of Gadolinite-(Ce)

Vitreous
Colour:
Black
Hardness (Mohs):
6½ - 7

Crystallography of Gadolinite-(Ce)

Crystal System:
Monoclinic
Cell Parameters:
a = 9.8973Å, b = 7.6282Å, c = 4.7505Å
β = 90.416°
Ratio:
a:b:c = 1.297 : 1 : 0.623
Unit Cell Volume:
V 358.65 ų (Calculated from Unit Cell)
X-Ray 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)

Chemical Properties of Gadolinite-(Ce)

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

Often slightly radioactive due to minor U and/or Th contents; therefore often metamict.
Essential elements:
All elements listed in formula:

Relationship of Gadolinite-(Ce) to other Species

Other Members of Group:
BakeriteCa4(H5B5Si3O20)
Calcybeborosilite-(Y)(Y,Ca)2(□,Fe2+)(B,Be)2[SiO4]2(OH,O)2
DatoliteCa(HBSiO5)
Gadolinite-(Y)Y2Fe2+Be2Si2O10
Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2
Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2
Hingganite-(Yb)(Yb,Y,REE)2□Be2[SiO4]2(OH)2
HomiliteCa2(Fe2+,Mg)B2Si2O10
Minasgeraisite-(Y)CaBe2Y2Si2O10
9.AJ.05Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2
9.AJ.05Ominelite(Fe2+,Mg)(Al,Fe3+)3(SiO4)(BO3)O2
9.AJ.10Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
9.AJ.10Holtite(Ta0.60.4)Al6BSi3O18(O,OH)2.25
9.AJ.10Magnesiodumortierite(Mg,Ti,◻(Al,Mg)2Al4Si3O18-y(OH)yB y = 2-3
9.AJ.15GarrelsiteBa3NaSi2B7O16(OH)4
9.AJ.20BakeriteCa4(H5B5Si3O20)
9.AJ.20DatoliteCa(HBSiO5)
9.AJ.20Gadolinite-(Y)Y2Fe2+Be2Si2O10
9.AJ.20Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2
9.AJ.20Hingganite-(Y)(Y,REE,Ca)2(□,Fe2+)Be2[SiO4]2(OH)2
9.AJ.20Hingganite-(Yb)(Yb,Y,REE)2□Be2[SiO4]2(OH)2
9.AJ.20HomiliteCa2(Fe2+,Mg)B2Si2O10
9.AJ.20Melanocerite-(Ce)(Ce,Ca)5(SiO4,BO4)3(OH,0)
9.AJ.20Minasgeraisite-(Y)CaBe2Y2Si2O10
9.AJ.20Calcybeborosilite-(Y)(Y,Ca)2(□,Fe2+)(B,Be)2[SiO4]2(OH,O)2
9.AJ.25Stillwellite-(Ce)(Ce,La,Ca)BSiO5
9.AJ.30Cappelenite-(Y)Ba(Y,Ce)6Si3B6O24F2
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+Si6B4O40F7
9.AJ.35Hundholmenite-(Y)(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48
9.AJ.35Proshchenkoite-(Y)Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14
9.AJ.40JadariteLiNaSiB3O7(OH)
14.3.1PhenakiteBe2SiO4
14.3.2BertranditeBe4(Si2O7)(OH)2
14.3.3BerylliteBe3(SiO4)(OH)2 · H2O
14.3.4LiberiteLi2BeSiO4
14.3.5ChkaloviteNa2BeSi2O6
14.3.6EudidymiteNa2Be2Si6O15 · H2O
14.3.7EpididymiteNa2Be2Si6O15 · H2O
14.3.8GugiaiteCa2Be(Si2O7)
14.3.9Jeffreyite(Ca,Na)2(Be,Al)(Si2O7,HSi2O7)
14.3.10Semenovite-(Ce)Na8Ca2FeBe6Ce2Si14O40(OH)4F4
14.3.11BaryliteBe2Ba(Si2O7)
14.3.12Hingganite-(Ce)(Ce,REE)2(□,Fe2+)Be2[SiO4]2(OH)2
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)2
14.3.15Minasgeraisite-(Y)CaBe2Y2Si2O10
14.3.16SørenseniteNa4SnBe2Si6O16(OH)4
14.3.17TrimeriteCaMn22+Be3(SiO4)3
14.3.18ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2O
14.3.19Tvedalite(Ca,Mn)4Be3Si6O17(OH)4 · 3H2O
14.3.20HarstigiteCa6(Mn,Mg)Be4Si6(O,OH)24
14.3.21SverigeiteNaMnMgSnBe2(SiO4)3(OH)
14.3.22Joesmithite{Pb}{Ca2}{Mg3Fe23+}(Be2Si6O22)(OH)2
14.3.23Gadolinite-(Y)Y2Fe2+Be2Si2O10
14.3.25Calciogadolinite-(Y)(YCa)2Fe3+Be2[SiO4]2O2

Other Names for Gadolinite-(Ce)

Name in Other Languages:
Simplified Chinese:硅铍铈矿
Traditional Chinese:矽鈹鈰礦

Other Information

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)

Reference List:
American Mineralogist: 63: 188-195.

Internet Links for Gadolinite-(Ce)

Localities for Gadolinite-(Ce)

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
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
    • 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
    • Bolzano Province (South Tyrol)
      • Vizze Valley (Pfitsch Valley)
        • San Giacomo
          • Vizze pass (Pfitsch pass)
Folie, K., P. Gentile, M. Hanke & I. Rocchetti (2010): Mineralien aus der Umgebung des Pfitscher Jochs in Südtirol (II). Mineralien-Welt 21 (4), 42-67.
Norway
 
  • 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
    • Murmanskaja Oblast'
      • Kola Peninsula
www.koeln.netsurf.de/~w.steffens/khib.htm
          • Kukisvumchorr Mt
            • East slope
EJM 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.
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