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Kobeite-(Y)

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Formula:
(Y,Zr)
 
2
(Ti,Fe
3+
 
)
 
2
(O,OH)
 
7
Hardness:
This page provides mineralogical data about Kobeite-(Y).

Classification of Kobeite-(Y)

IMA status:Approved
Strunz 8th edition ID:4/D.20-20
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:8.3.12.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
Hey's CIM Ref.:18.4.7

18 : Niobates and Tantalates
4 : Niobates and tantalates containing both U and rare earths
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Type Occurrence of Kobeite-(Y)

Type Locality:Shiraishi-yama (Shiroishi), Kobe, Ohmiya town, Kyoto prefecture, Kinki region, Honshu Island, Japan

Physical Properties of Kobeite-(Y)

Hardness (Mohs):

Chemical Properties of Kobeite-(Y)

Formula:
(Y,Zr)
 
2
(Ti,Fe
3+
 
)
 
2
(O,OH)
 
7
Simplified for copy/paste:(Y,Zr)2(Ti,Fe3+)2(O,OH)7
Essential elements:O, Ti, Y
All elements listed in formula:Fe, H, O, Ti, Y, Zr

Relationship of Kobeite-(Y) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.DG.05Euxenite-(Y)
(Y,Ca,Ce,U,Th)(Nb,Ti,Ta)
 
2
O
 
6
4.DG.05Fersmite
(Ca,Y)(Nb,Ta,Ti)
 
2
(O,OH)
 
6
4.DG.05Loranskite-(Y)
(Y,Ce,Ca)ZrTaO
 
6
(?)
4.DG.05Polycrase-(Y)
(Y,U)(Ti,Nb)
 
2
O
 
6
4.DG.05Tanteuxenite-(Y)
(Y,Ce,Ca)(Ta,Nb,Ti)
 
2
(O,OH)
 
6
4.DG.05Uranopolycrase
(U
4+
 
,Y)(Ti,Nb)
 
2
O
 
6
4.DG.05Yttrocrasite-(Y)
(Y,Th,Ca,U)(Ti,Fe)
 
2
(O,OH)
 
6
4.DG.10β-Fergusonite-(Y)
YNbO
 
4
4.DG.10β-Fergusonite-(Nd)
(Nd,Ce)NbO
 
4
4.DG.10β-Fergusonite-(Ce)
(Ce,La,Nd)NbO
 
4
4.DG.10Yttrotantalite-(Y)
(Y,Ca,U
4+
 
,Fe
2+
 
)
 
2
(Ta,Nb)
 
2
O
 
8
4.DG.10Beta-Fergusonite-(Nd)
4.DG.15Foordite
(Sn,Pb)(Nb,Ta)
 
2
O
 
6
4.DG.15Thoreaulite
(Sn
2+
 
,Pb)(Ta,Nb)
 
2
O
 
6
4.DG.20Raspite
Pb(WO
 
4
)
Related Minerals - Hey's Index Grouping:

- +
18.4.1Uranpyrochlore (of Hogarth 1977)
(U,Ca,Ce)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
18.4.2Yttrocolumbite-(Y)
Y(U
4+
 
,Fe
2+
 
)Nb
 
2
O
 
8
18.4.3Yttrotantalite-(Y)
(Y,Ca,U
4+
 
,Fe
2+
 
)
 
2
(Ta,Nb)
 
2
O
 
8
18.4.4Ishikawaite
U
4+
 
Fe
2+
 
Nb
 
2
O
 
8
18.4.5Euxenite-(Y)
(Y,Ca,Ce,U,Th)(Nb,Ti,Ta)
 
2
O
 
6
18.4.6Tanteuxenite-(Y)
(Y,Ce,Ca)(Ta,Nb,Ti)
 
2
(O,OH)
 
6
18.4.8Polycrase-(Y)
(Y,U)(Ti,Nb)
 
2
O
 
6
18.4.9Yttropyrochlore (of Hogarth 1977)
18.4.10Calciobetafite (of Mazzi & Munno)
18.4.11Yttrobetafite (of Hogarth 1977)
18.4.12Samarskite-(Y)
(Y,Fe
3+
 
,Fe
2+
 
,U,Th,Ca)
 
2
(Nb,Ta)
 
2
O
 
8

Other Names for Kobeite-(Y)

Other Languages:
Japanese:河辺石

Other Information

Health Warning:Radioactive

References for Kobeite-(Y)

Reference List:

- +
American Mineralogist (1957): 42: 342.

Mineralogical Journal (Japan) (1961): 3: 139.

Internet Links for Kobeite-(Y)

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  • Localities for Kobeite-(Y)

    The 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. ? 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
     
    • 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
     
    • Honshu Island
      • Chugoku Region
        • Hiroshima Prefecture
          • Hiroshima City
            • Hataga
    P.M. Kartashov data
    alfredo petrov specimens
      • Kinki region
        • Kyoto prefecture
          • Ohmiya town
            • Kobe
    Journ.Geol.Soc.Japan (1950) 56, 509-519
    • Kyushu Region
      • Miyazaki prefecture
        • Hinokage-cho
    Alfredo Petrov specimen
    New Zealand
     
    • South Island
      • West Coast (Westland)
        • South Westland
          • Paringa River
    Hutton, C.O. (1957), Kobeite from Paringa River, South Westland, New Zealand, Am.Min.: 42: 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.
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