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Kobeite-(Y)

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About Kobeite-(Y)Hide

Formula:
(REE,Fe,U)3 Zr(Ti,Nb)3 O12
Hardness:
Member of:
Name:
Named for the type locality of Kobe, Kyoto prefecture, Japan.
This page provides mineralogical data about Kobeite-(Y).


Classification of Kobeite-(Y)Hide

Approved, 'Grandfathered' (first described prior to 1959)
4.DG.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
G : With large (+- medium-sized) cations; chains of edge-sharing octahedra
8.3.12.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
18.4.7

18 : Niobates and Tantalates
4 : Niobates and tantalates containing both U and rare earths

Physical Properties of Kobeite-(Y)Hide

Hardness:
5½ on Mohs scale

Chemical Properties of Kobeite-(Y)Hide

Formula:
(REE,Fe,U)3 Zr(Ti,Nb)3 O12
IMA Formula:
(Y,U)(Ti,Nb)2(O,OH)6 (?)

Type Occurrence of Kobeite-(Y)Hide

Other Language Names for Kobeite-(Y)Hide

Japanese:河辺石

Relationship of Kobeite-(Y) to other SpeciesHide

Member of:
Other Members of this group:
Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6Orth. mmm (2/m 2/m 2/m)
Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6Orth. mmm (2/m 2/m 2/m) : Pbcn
Loranskite-(Y)(Y,Ce,Ca)ZrTaO6 (?)
Polycrase-(Y)Y(Ti,Nb)2(O,OH)6Orth. mmm (2/m 2/m 2/m)
Tanteuxenite-(Y)Y(Ta,Nb,Ti)2(O,OH)6
Uranopolycrase(U4+,Y)(Ti,Nb)2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6Amor.

Related Minerals - Nickel-Strunz GroupingHide

4.DG.05Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6Orth. mmm (2/m 2/m 2/m)
4.DG.05Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DG.05Loranskite-(Y)(Y,Ce,Ca)ZrTaO6 (?)
4.DG.05Polycrase-(Y)Y(Ti,Nb)2(O,OH)6Orth. mmm (2/m 2/m 2/m)
4.DG.05Tanteuxenite-(Y)Y(Ta,Nb,Ti)2(O,OH)6
4.DG.05Uranopolycrase(U4+,Y)(Ti,Nb)2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
4.DG.05Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6Amor.
4.DG.10Fergusonite-(Y)-βYNbO4Mon. 2/m
4.DG.10Fergusonite-(Nd)-β(Nd,Ce)NbO4
4.DG.10Fergusonite-(Ce)-β(Ce,La,Nd)NbO4
4.DG.10Yttrotantalite-(Y)(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4Orth.
4.DG.10Beta-Fergusonite-(Nd)(Nd,Ce)NbO4
4.DG.15FoorditeSn2+(Nb,Ta)2O6Mon. 2/m : B2/b
4.DG.15Thoreaulite(Sn2+,Pb)(Ta,Nb)2O6Mon.
4.DG.20RaspitePb(WO4)Mon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

18.4.1Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)Iso.
18.4.2Yttrocolumbite-(Y)Y(U4+,Fe2+)Nb2O8
18.4.3Yttrotantalite-(Y)(Y,U4+,Fe2+)(Ta,Nb)(O,OH)4Orth.
18.4.4IshikawaiteU4+Fe2+Nb2O8Mon.
18.4.5Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6Orth. mmm (2/m 2/m 2/m)
18.4.6Tanteuxenite-(Y)Y(Ta,Nb,Ti)2(O,OH)6
18.4.8Polycrase-(Y)Y(Ti,Nb)2(O,OH)6Orth. mmm (2/m 2/m 2/m)
18.4.9Yttropyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
18.4.10Calciobetafite (of Mazzi & Munno)(Ca,Na)2(Nb,Ti)2(O,OH)7
18.4.11Yttrobetafite (of Hogarth 1977)A2-mD2X6-wZ1-n
18.4.12Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8Orth. mmm (2/m 2/m 2/m) : Pbcn

Other InformationHide

Health Risks:
Radioactive

References for Kobeite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1957): 42: 342.
Mineralogical Journal (Japan) (1961): 3: 139.

Internet Links for Kobeite-(Y)Hide

Localities for Kobeite-(Y)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
 
  • Lower Austria
    • Industrieviertel
      • Gloggnitz
        • Schlossberg
Brandstätter, F. & Niedermayr, G. (1998): Kobeit-(Y) aus dem Riebeckitgneis- Steinbruch bei Gloggnitz, NÖ. Mineralien-Welt, 9 (03), 42; Brandstätter, F. & Niedermayr, G. (1998) Carinthia II; Collection of Natural History Museum, Vienna; U. Kolitsch (reinvestigation, to be published)
Japan
 
  • Ehime
    • Inland Sea (Setonaikai)
      • Yuge Island
Yukikazu Ogoshi, Tetsuo Minakawa (2011) Nb- Ta minerals in metasomatic skarn from Yuge Is. 2011 Joint Annual Meeting of Japan Association of Mineralogical Sciences and The Geological Society of Japan, Session ID: R1-P17
  • Hiroshima
    • Hiroshima City
      • Hataga
P.M. Kartashov data
alfredo petrov specimens
  • Kyoto prefecture
    • Ohmiya town
      • Kobe
Journ.Geol.Soc.Japan (1950) 56, 509-519
  • Miyazaki
    • Hinokage-cho
Alfredo Petrov specimen
Mexico
 
  • Oaxaca
    • Mun. de San Francisco Telixtlahuaca
      • San Francisco Telixtlahuaca
Prol-Ledesma, R.-M., Melgarejo, J.C. & Martin, R.F. (2012) The El Muerto "NYF" granitic pegmatite, Oaxaca, Mexico, and its striking enrichment in allanite-(Ce) and monazite-(Ce). Canadian Mineralogist 50, 1055-1076.
New Zealand
 
  • South Island
    • West Coast Region
      • Westland District
        • Paringa River
Hutton, C. Osborne. (1957) Kobeite from Paringa River, South Westland, New Zealand. American Mineralogist 42, (5) & (6): 342-353.
Norway
 
  • Telemark
    • Nome
Åmli,R. (1974): Rapport, Mineralogisk-Geologisk Museum. Mineralogiske og geokjemiske undersøkelser vedrørende scandium, niob og sjeldne jordarter i Fensfeltet, Ulefoss( p. 49) Cited in Neumann, H. (1985): Norges Mineraler. Norges Geologiske Undersøkelse Skrifter 68, p. 81.
Mineral and/or Locality  
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