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β-Fergusonite-(Y)

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Formula:
YNbO
 
4
Hardness:5½ - 6½
Name:In allusion to its dimorphous relation to fergusonite-(Y). After Robert Ferguson (1767-1840), Scottish landowner, politician and mineral collector.
This page provides mineralogical data about β-Fergusonite-(Y).

Classification of β-Fergusonite-(Y)

IMA status:Approved
Strunz 8th edition ID:4/D.24-10
Nickel-Strunz 10th (pending) edition ID:4.DG.10

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:8.1.2.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO4
Hey's CIM Ref.:18.2.2

18 : Niobates and Tantalates
2 : Niobates and tantalates containing rare earths but not U
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Type Occurrence of β-Fergusonite-(Y)

Type Locality:Asht-Sai, Shaidan Massif, Kuraminskii Range, Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad), Tajikistan

Physical Properties of β-Fergusonite-(Y)

Hardness (Mohs):5½ - 6½

Optical Data of β-Fergusonite-(Y)

Type:Biaxial (+/-)
RI values: nα = 2.060 - 2.190 nβ = 2.060 - 2.190 nγ = 2.060 - 2.190
Maximum Birefringence:δ = 0.000

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r < v

Chemical Properties of β-Fergusonite-(Y)

Formula:
YNbO
 
4
Essential elements:Nb, O, Y
All elements listed in formula:Nb, O, Y

Relationship of β-Fergusonite-(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.05Kobeite-(Y)
(Y,Zr)
 
2
(Ti,Fe
3+
 
)
 
2
(O,OH)
 
7
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-(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:

- +
18.2.1Fergusonite-(Y)
YNbO
 
4
18.2.3Fergusonite-(Ce)
(Ce,La,Nd)NbO
 
4
18.2.4β-Fergusonite-(Ce)
(Ce,La,Nd)NbO
 
4
18.2.5Fergusonite-(Nd)
(Nd,Ce)(Nb,Ti)O
 
4
18.2.6β-Fergusonite-(Nd)
(Nd,Ce)NbO
 
4
18.2.7Formanite-(Y)
YTaO
 
4
18.2.8Pyrochlore Group
A
 
2
Nb
 
2
(O,OH)
 
6
Z
18.2.9Ceriopyrochlore (of Hogarth 1977)
18.2.10Strontiopyrochlore (of Hogarth 1977)
18.2.11Loparite-(Ce)
(Na,Ce,Ca,Sr,Th)(Ti,Nb,Fe)O
 
3
18.2.12Fersmite
(Ca,Y)(Nb,Ta,Ti)
 
2
(O,OH)
 
6
18.2.13Aeschynite-(Ce)
(Ce,Ca,Fe,Th)(Ti,Nb)
 
2
(O,OH)
 
6
18.2.14Aeschynite-(Nd)
(Nd,Ce,Ca)(Ti,Nb)
 
2
(O,OH)
 
6
18.2.15Aeschynite-(Y)
(Y,Ca,Fe,Th)(Ti,Nb)
 
2
(O,OH)
 
6
18.2.16Nioboaeschynite-(Ce)
(Ce,Ca,Th)(Nb,Ti)
 
2
(O,OH)
 
6
18.2.17Nioboaeschynite-(Nd)
(Nd,Ce,Ca,Th)(Nb,Ti,Fe,Ta)
 
2
(O,OH)
 
6
18.2.18Tantalaeschynite-(Y)
(Y,Ce,Ca)(Ta,Ti,Nb)
 
2
O
 
6
18.2.19Vigezzite
(Ca,Ce)(Nb,Ti)
 
2
O
 
6
18.2.20Murataite-(Y)
(Y,Na)
 
6
Zn(Zn,Fe
3+
 
)
 
4
(Ti,Nb,Na)
 
12
O
 
29
(O,F,OH)
 
10
F
 
4

Other Names for β-Fergusonite-(Y)

Synonyms:
Fergusonite-beta-(Y)
Other Languages:

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for β-Fergusonite-(Y)

Reference List:

- +
American Mineralogist (1961): 46: 1516.

Internet Links for β-Fergusonite-(Y)

Search Engines:
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  • External Links:
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  • Look for β-Fergusonite-(Y) on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Fergusonite-beta-(Y) details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Localities for β-Fergusonite-(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.
    China
     
    • Jiangxi Province
      • Ganzhou Prefecture
        • Dayu Co.
    Zhang Peishan, Yang Zhuming, Tao Kejie, and Yang Xueming (1996): "Mineralogy and Geology of Rare Earths in China", Science Press (Beijing), 226 pp.
    • Sichuan Province
      • Liangshan Autonomous Prefecture
        • Dechang Co.
    Zhang Peishan, Yang Zhuming, Tao Kejie, and Yang Xueming (1996): "Mineralogy and Geology of Rare Earths in China", Science Press (Beijing), 226 pp.
    Italy
     
    • Piedmont
      • Verbano-Cusio-Ossola Province
        • Ossola Valley
          • Baceno
            • Devero Alp (Devero Valley; Val Devero)
    Guastoni, A. (2009): Monte Cervandone. Recenti novità mineralogiche. Rivista Mineralogica Italiana 2009 (1), 38-48.
    Japan
     
    • Honshu Island
      • Tohoku Region
        • Akita Prefecture
    The Mineral Species of Japan (5th ed) Matsubara
        • Fukushima Prefecture
    The Mineral Species of Japan (5th ed) Matsubara
    Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
    Mongolia
     
    • Hovd Aimag (Khovd Aimag)
      • Altai Mts
        • Khaldzan Buragtag Massif
          • Mount Ulyn Khuren
    P.M. Kartashov data
    P.M. Kartashov data
    Norway
     
    • Aust-Agder
    RRUFF ID: R070600
    Sweden
     
    • Uppland
      • Vaxholm
        • Resarö
    in the exhibition of Riksmuseet Stockholm
    Tajikistan
     
    • Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad)
      • Kuraminskii Range
        • Shaidan Massif
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    USA
     
    • Washington
      • Okanogan Co.
        • Golden Horn Batholith
    Rocks and Minerals, 66:6, p. 458; American Mineralogist, V.73, p.1191-1194
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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