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β-Fergusonite-(Ce)

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

Classification of β-Fergusonite-(Ce)

IMA status:Approved
Strunz 8th edition ID:4/D.24-20
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:8.1.2.2

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO4
Hey's CIM Ref.:18.2.4

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

Type Locality:Bayan Obo (Bayun-Obo; Baiyunebo) deposit, Bayan Obo, Bayan Obo Mining District, Baotou League (Baotou Prefecture), Inner Mongolia Autonomous Region, China

Physical Properties of β-Fergusonite-(Ce)

Hardness (Mohs):5½ - 6½

Chemical Properties of β-Fergusonite-(Ce)

Formula:
(Ce,La,Nd)NbO
 
4
Essential elements:Ce, Nb, O
All elements listed in formula:Ce, La, Nb, Nd, O

Relationship of β-Fergusonite-(Ce) 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,U,Ca,Th)(Ti,Fe)
 
2
(O,OH)
 
6
4.DG.10β-Fergusonite-(Y)
YNbO
 
4
4.DG.10β-Fergusonite-(Nd)
(Nd,Ce)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
18.2.2β-Fergusonite-(Y)
YNbO
 
4
18.2.3Fergusonite-(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-(Ce)

Synonyms:
Fergusonite-beta-(Ce)
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-(Ce)

Reference List:

- +
Kuo Chi-Ti, Wang I-Hsien, Wang Hsien-Chueh, Wang Chung-Kang, and Hou Hung-Chuan (1973): Studies on minerals of the fergusonite group. Geochimica 2, 86-92 (in Chinese). - American Mineralogist (1974), 60, 485 (abstract); American Mineralogist (1976), 62, 397 (abstract).

Internet Links for β-Fergusonite-(Ce)

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Fergusonite-beta-(Ce) details from Handbook of Mineralogy (PDF) [Link dead]
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    • Localities for β-Fergusonite-(Ce)

    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.
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    (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
     
    • Inner Mongolia Autonomous Region
      • Baotou League (Baotou Prefecture)
        • Bayan Obo Mining District
          • Bayan Obo
    		Kuo Chi-Ti, Wang I-Hsien, Wang Hsien-Chueh, Wang Chung-Kang, and Hou Hung-Chuan (1973): Geochimica 2, 86-92.
    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
      • Kangasala
    		Vorma et al 1966 Bulletin de la Commission Geologique de Finlande 222
    Russia
     
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
          • Ilmen Mts
            • Ilmen Natural Reserve
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    USA
     
    • Virginia
    		RRUFF database : Specimen No. RO70300 and RO80102
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