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Fergusonite-(Y)-β

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About Fergusonite-(Y)-βHide

Robert Ferguson
Formula:
YNbO4
Hardness:
5½ - 6½
Crystal System:
Monoclinic
Name:
In allusion to its dimorphous relation to fergusonite-(Y). After Robert Ferguson (8 September 1769 – 3 December 1840, London, England), Scottish landowner, politician and mineral collector.
Dimorph of:
This page provides mineralogical data about Fergusonite-(Y)-β.


Classification of Fergusonite-(Y)-βHide

Approved
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
8.1.2.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO4
18.2.2

18 : Niobates and Tantalates
2 : Niobates and tantalates containing rare earths but not U

Physical Properties of Fergusonite-(Y)-βHide

Hardness:
5½ - 6½ on Mohs scale

Optical Data of Fergusonite-(Y)-βHide

Type:
Biaxial (+/-)
RI values:
nα = 2.060 - 2.190 nβ = 2.060 - 2.190 nγ = 2.060 - 2.190
Max Birefringence:
δ = 0.000
Image 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 Fergusonite-(Y)-βHide

Formula:
YNbO4

Chemical AnalysisHide

Oxide wt%:
 1
CaO1,58 %
UO25,09 %
ThO20,31 %
Y2O328,46 %
Nd2O30,51 %
Sm2O31,39 %
Gd2O31,76 %
Dy2O33,09 %
Er2O31,04 %
Yb2O33,79 %
Lu2O31,01 %
Nb2O545,20 %
Ta2O54,44 %
Total:93 %
Sample references:
IDLocalityReference
1Atagoyama, Fukushima Prefecture, Tohoku Region, Honshu Island, JapanMatsubara, S., Miyawaki, R., Yokoyama, K., Momma, K., Shigeoka, M., and Hashimoto, E. (2013) Pyrochlore and microlite in a pegmatite at Atagoyama, Koriyama City, Fukushima Prefecture, Japan. Bulletin of the National Museum of Nature and Science, Ser. C, 39, 1–6.

Crystallography of Fergusonite-(Y)-βHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 5.292 Å, b = 10.94 Å, c = 5.069 Å
β = 94.6°
Ratio:
a:b:c = 0.484 : 1 : 0.463
Unit Cell V:
292.52 ų (Calculated from Unit Cell)
Z:
4
Comment:
Non-standard space group I2/a. Cell in C2/c setting is: a = 7.6454(3), 10.9994(5), 5.3172(2) Å, β = 138.42° (Weitzel & Schröcke, 1980).

Type Occurrence of Fergusonite-(Y)-βHide

Synonyms of Fergusonite-(Y)-βHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Fergusonite-β-(Y)1 photo of Fergusonite-(Y)-β associated with Fergusonite-β-(Y) on mindat.org.
Ferriallanite-(Ce)1 photo of Fergusonite-(Y)-β associated with Ferriallanite-(Ce) on mindat.org.
Zircon1 photo of Fergusonite-(Y)-β associated with Zircon on mindat.org.
Kainosite-(Y)1 photo of Fergusonite-(Y)-β associated with Kainosite-(Y) on mindat.org.
Quartz1 photo of Fergusonite-(Y)-β associated with Quartz on mindat.org.

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.05Kobeite-(Y)(REE,Fe,U)3 Zr(Ti,Nb)3 O12
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-(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 - Dana Grouping (8th Ed.)Hide

8.1.2.2Fergusonite-(Ce)-β(Ce,La,Nd)NbO4
8.1.2.3Fergusonite-(Nd)-β(Nd,Ce)NbO4

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

18.2.1Fergusonite-(Y)YNbO4Tet. 4/m : I41/a
18.2.3Fergusonite-(Ce)(Ce,La,Nd)NbO4
18.2.4Fergusonite-(Ce)-β(Ce,La,Nd)NbO4
18.2.5Fergusonite-(Nd)(Nd,Ce)(Nb,Ti)O4
18.2.6Fergusonite-(Nd)-β(Nd,Ce)NbO4
18.2.7Formanite-(Y)YTaO4Tet. 4/m : I41/a
18.2.8Pyrochlore GroupA2Nb2(O,OH)6Z
18.2.9Ceriopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
18.2.10Strontiopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
18.2.11Loparite-(Ce)(Na,REE)Ti2O6
18.2.12Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.2.13Aeschynite-(Ce)(Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6Orth. mmm (2/m 2/m 2/m) : Pmna
18.2.14Aeschynite-(Nd)(Nd,Ln,Ca)(Ti,Nb)2(O,OH)6Orth. mmm (2/m 2/m 2/m)
18.2.15Aeschynite-(Y)(Y,Ln,Ca,Th)(Ti,Nb)2(O,OH)6Orth. mmm (2/m 2/m 2/m) : Pmna
18.2.16Nioboaeschynite-(Ce)(Ce,Ca)(Nb,Ti)2(O,OH)6Orth.
18.2.17Nioboaeschynite-(Nd)(Nd,Ce,Ca,Th)(Nb,Ti,Fe,Ta)2(O,OH)6Orth.
18.2.18Tantalaeschynite-(Y)Y(Ta,Ti,Nb)2O6Orth. mmm (2/m 2/m 2/m)
18.2.19Vigezzite(Ca,Ce)(Nb,Ta,Ti)2O6Orth.
18.2.20Murataite-(Y)(Y,Na)6Zn(Zn,Fe3+)4(Ti,Nb,Na)12O29(O,F,OH)10F4 Iso. m3m (4/m 3 2/m) : Fm3m

Other InformationHide

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 Fergusonite-(Y)-βHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Gorshevskaya, S.A., Sidorenko, G.A., Smorchkov, I.E. (1961) A new modification of fergusonite: β-fergusonite. Geologiya Rudnykh Mestorozhdenii: 9: 28-29.
American Mineralogist (1961): 46: 1516 (Abs.)
Weitzel, H., Schröcke, H. (1980) Kristallstrukturverfeinerungen von Euxenit, Y(Nb0.5Ti0.5)2O6, und M-Fergusonit, YNbO4. Zeitschrift für Kristallographie: 152: 69-82.
Guastoni, A., Cámara, F., Nestola, F. (2010) Arsenic-rich β-Fergusonite-(Y) from Mount Cervandone (Western Alps, Italy): Crystal structure and genetic implications. American Mineralogist: 95: 487-494.

Internet Links for Fergusonite-(Y)-βHide

Localities for Fergusonite-(Y)-βHide

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.
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.
Finland
 
  • Western and Inner Finland Region
    • Valkeakoski
Vorma, A., Ojanperä, P., Hoffrén, V., Siivola, J. & Löfgren, A.(1966): On the rare earth minerals from the Pyörönmaa pegmatite in Kangasala, SW-Finland.Bulletin de la Commission Géologique Finlande 222. 241-274
Germany
 
  • Saxony
    • Oberlausitz
      • Görlitz
        • Königshain
Witzke, T. & Giesler, T. (2013): Eine Seltenerd- und Niob-Tantal-Mineralisation aus dem Königshainer Granit in der Lausitz, Sachsen.- Mineralien-Welt 24(1), 36-45
Witzke, T. & Giesler, T. (2013): Eine Seltenerd- und Niob-Tantal-Mineralisation aus dem Königshainer Granit in der Lausitz, Sachsen.- Mineralien-Welt 24(1), 36-45
Italy
 
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Ossola Valley
        • Antigorio Valley
          • Devero Valley
            • Baceno
              • Devero Alp
Guastoni, A. (2009): Monte Cervandone. Recenti novità mineralogiche. Rivista Mineralogica Italiana 2009 (1), 38-48. ; Guastoni, A., Cámara, F. and Nestola, F. (2010): Arsenic-rich β-Fergusonite-(Y) from Mount Cervandone (Western Alps, Italy): Crystal structure and genetic implications. American Mineralogist, 95, 487-494. ; Guastoni, A., Cámara, F. and Nestola, F. (2010): Arsenic-rich β-Fergusonite-(Y) from Mount Cervandone (Western Alps, Italy): Crystal structure and genetic implications. American Mineralogist, 95, 487-494.
        • Vigezzo Valley
          • Toceno
            • Val di Crana
Orlandi, P. (2011): Zibaldone di mineralogia italiana 2010. Micro, 1/2011, 39-42
Japan
 
  • Honshu Island
    • Tohoku Region
      • Akita Prefecture
The Mineral Species of Japan (5th ed) Matsubara
      • Fukushima Prefecture
Matsubara, S., Miyawaki, R., Yokoyama, K., Momma, K., Shigeoka, M., and Hashimoto, E. (2013) Pyrochlore and microlite in a pegmatite at Atagoyama, Koriyama City, Fukushima Prefecture, Japan. Bulletin of the National Museum of Nature and Science, Ser. C, 39, 1–6.
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
Switzerland
 
  • Wallis (Valais)
    • Binn Valley
      • Chummibort
Cuchet, S., Crumbach, M. and van der Burgt, A. (2014): Das Binntal enthüllt ein grosses Geheimnis. Schweizer Strahler 48 (2), 2-55 (in German and French)
Tajikistan (TL)
 
  • 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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