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Calciogadolinite-(Y)

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About Calciogadolinite-(Y)Hide

Formula:
(YCa)2Fe3+Be2[SiO4]2O2
Name:
Named by T. Nakai in 1938 according to composition and similarity with gadolinite, but considered questionable. Discredited in 2006 (considered Ca-bearing gadolinite under current site-dominance rules).
A variety of Gadolinite-(Y)

A Ca-dominant gadolinite. Although Ca dominates over any individual REE, the current site dominance rules do not allow for species status because trivalent elements (mostly REE) dominate over total divalent elements (mostly Ca) on the site.


Classification of Calciogadolinite-(Y)Hide

Discredited
54.2.1b.4

54 : NESOSILICATES Borosilicates and Some Beryllosilicates
2 : Borosilicates and Some Beryllosilicates with B in [4] coordination
14.3.25

14 : Silicates not Containing Aluminum
3 : Silicates of Be

Chemical Properties of Calciogadolinite-(Y)Hide

Formula:
(YCa)2Fe3+Be2[SiO4]2O2

Other Language Names for Calciogadolinite-(Y)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Hingganite-(Y)4 photos of Calciogadolinite-(Y) associated with Hingganite-(Y) on mindat.org.
Hingganite-(Ce)4 photos of Calciogadolinite-(Y) associated with Hingganite-(Ce) on mindat.org.
Quartz3 photos of Calciogadolinite-(Y) associated with Quartz on mindat.org.
Microcline3 photos of Calciogadolinite-(Y) associated with Microcline on mindat.org.
Betafite (of Hogarth 1977)2 photos of Calciogadolinite-(Y) associated with Betafite (of Hogarth 1977) on mindat.org.
Thorite2 photos of Calciogadolinite-(Y) associated with Thorite on mindat.org.

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

54.2.1b.1BakeriteCa4(H5B5Si3O20)Mon. 2/m : P21/b
54.2.1b.2Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10Mon. 2/m
54.2.1b.3Gadolinite-(Y)Y2Fe2+Be2Si2O10Mon. 2/m : P21/b
54.2.1b.5HomiliteCa2(Fe2+,Mg)B2Si2O10Mon. 2/m : P21/b
54.2.1b.6Minasgeraisite-(Y)BiCa(Y,Ln)2(□,Mn)2(Be,B,Si)4Si4O16 [(OH),O]4Tric. 1 : P1

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)BiCa(Y,Ln)2(□,Mn)2(Be,B,Si)4Si4O16 [(OH),O]4Tric. 1 : P1
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
14.3.24Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10Mon. 2/m

Other InformationHide

Health Risks:
Contain Be and radioactive.

References for Calciogadolinite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Nakai (1938) Bulletin of the Chemical Society of Japan, 13, 591-594.
Burke, E.A.J. (2006) A mass discreditation of GQN minerals. The Canadian Mineralogist: 44: 1557-1560.

Internet Links for Calciogadolinite-(Y)Hide

Localities for Calciogadolinite-(Y)Hide

ⓘ - 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.
Italy
 
  • Latium
    • Viterbo Province
      • Vico volcanic complex (Vico Lake)
Van King
Japan
 
  • Honshu Island
    • Chubu region
      • Nagano prefecture
        • Kiso-gun
          • Nagiso
Nagashima & Nagashima (1960) Nihon Kigenso Koubutsu, 184-189.
Mongolia
 
  • Hovd Aimag (Khovd Aimag)
    • Altai Mts
      • Khaldzan Buragtag Massif
        • Mount Ulyn Khuren
Kartashov P.M., Voloshin A.V., PakhomovskiiYa.A. On the zonal crystaline gadolinite from the alkaline granite pegmatites of Haldzan Buragtag (Mongolian Altai), - Zapiski VMO, 1993,N3,p. 65-79.
Mineral and/or Locality  
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