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Plumbopyrochlore

Big Photo

North Sugarloaf Mt. locality, Bethlehem, Grafton Co., New Hampshire, USA
© S.M. Whittemore

Show Plumbopyrochlore Photos (9)
Formula:
(Pb,Y,U,Ca)
 
2-x
Nb
 
2
O
 
6
(OH)
Colour:Dark brown (interior), ...Hardness:4½ - 5½


Pyrochlore Group. Pyrochlore Subgroup. The lead analogue of the other members of the Pyrochlore Subgroup and the niobium analogue of Plumbobetafite and Plumbomicrolite.

Classification of Plumbopyrochlore

IMA status:Approved
Strunz 8th edition ID:4/C.17-80
Nickel-Strunz 10th (pending) edition ID:4.DH.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
Dana 8th edition ID:8.2.1.6

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
2 : A2B2O6(O,OH,F)
Hey's CIM Ref.:18.1.25

18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U
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Type Occurrence of Plumbopyrochlore

Type Locality:Tai-Keu REE-Nb occurrence, Labytnangi, Polar Urals, Tyumenskaya Oblast', Western-Siberian Region, Russia
Year of Discovery:1966

Physical Properties of Plumbopyrochlore

Colour:Dark brown (interior), greenish yellow to red (exterior)
Hardness (Mohs):4½ - 5½

Chemical Properties of Plumbopyrochlore

Formula:
(Pb,Y,U,Ca)
 
2-x
Nb
 
2
O
 
6
(OH)
Essential elements:H, Nb, O, Pb
All elements listed in formula:Ca, H, Nb, O, Pb, U, Y

Relationship of Plumbopyrochlore to other Species

Related to:
  • Pyrochlore Group
  • Pyrochlore Subgroup
    • Related Minerals - Nickel-Strunz Grouping):
    4.DH.05Brannerite
    (U
    4+
     
    		,Ca)(Ti,Fe
    3+
     
    		)
     
    2
    		O
     
    6
    4.DH.05Orthobrannerite
    UTi
     
    4
    		O
     
    12
    		(OH)
     
    2
    4.DH.05Thorutite
    (Th,U,Ca)Ti
     
    2
    		(O,OH)
     
    6
    4.DH.10Kassite
    CaTi
     
    2
    		O
     
    4
    		(OH)
     
    2
    4.DH.10Lucasite-(Ce)
    CeTi
     
    2
    		(O,OH)
     
    6
    4.DH.15Alumotungstite
    (W,Al)(O,OH)
     
    3
    4.DH.15Bariomicrolite
    Ba(Ta,Nb)
     
    2
    		(O,OH)
     
    7
    4.DH.15Bariopyrochlore
    (Ba,Sr)
     
    2
    		(Nb,Ti)
     
    2
    		(O,OH)
     
    7
    4.DH.15Betafite
    (Ca,U)
     
    2
    		(Ti,Nb)
     
    2
    		O
     
    6
    		(OH)
    4.DH.15Bismutomicrolite
    (Bi,Ca)(Ta,Nb)
     
    2
    		O
     
    6
    		(OH)
    4.DH.15Calciobetafite
    (Ca,RE,Th,U)
     
    2
    		(Nb,Ta,Ti)
     
    2
    		O
     
    7
    4.DH.15Ceriopyrochlore-(Ce)
    (Ce,Ca,Y)
     
    2
    		(Nb,Ta)
     
    2
    		O
     
    6
    		(OH,F)
    4.DH.15Cesstibtantite
    (Cs,Na)SbTa
     
    4
    		O
     
    12
    4.DH.15Ferritungstite
    (W,Fe
    3+
     
    		)(O,OH)
     
    3
    4.DH.15Jixianite
    Pb(W,Fe
    3+
     
    		)
     
    2
    		(O,OH)
     
    7
    4.DH.15Kalipyrochlore
    (K,Sr)
     
    2-x
    		Nb
     
    2
    		O
     
    6
    		(O,OH)·nH
     
    2
    		O
    4.DH.15Microlite
    (Ca,Na)
     
    2
    		Ta
     
    2
    		O
     
    6
    		(O,OH,F)
    4.DH.15Natrobistantite
    (Na,Cs)Bi(Ta,Nb,Sb)
     
    4
    		O
     
    12
    4.DH.15Plumbomicrolite
    (Pb,Ca,U)
     
    2
    		Ta
     
    2
    		O
     
    6
    		(OH)
    4.DH.15Plumbobetafite
    (Pb,U,Ca)(Ti,Nb)
     
    2
    		O
     
    6
    		(OH,F)
    4.DH.15Pyrochlore
    (Ca,Na)
     
    2
    		Nb
     
    2
    		O
     
    6
    		(OH,F)
    4.DH.15Stibiomicrolite
    (Sb,Ca,Na)
     
    2
    		(Ta,Nb)
     
    2
    		O
     
    7
    4.DH.15Strontiopyrochlore
    (Sr,Ce,Ca)
     
    0.66
    		(Nb,Fe)
     
    2
    		(O,OH)
     
    7
    4.DH.15Stannomicrolite
    (Sn,Fe,Mn)
     
    2
    		(Ta,Nb,Sn)
     
    2
    		(O,OH)
     
    7
    4.DH.15Stibiobetafite
    (Sb,Ca)
     
    2
    		(Ti,Nb,Ta)
     
    2
    		(O,OH)
     
    7
    4.DH.15Uranmicrolite
    (U,Ca,Ce)
     
    2
    		(Ta,Nb)
     
    2
    		O
     
    6
    		(OH,F)
    4.DH.15Uranpyrochlore
    (U,Ca,Ce)
     
    2
    		(Nb,Ta)
     
    2
    		O
     
    6
    		(OH,F)
    4.DH.15Yttrobetafite-(Y)
    (Y,U,Ce)
     
    2
    		(Ti,Nb,Ta)
     
    2
    		O
     
    6
    		OH
    4.DH.15Yttropyrochlore-(Y)
    (Y,Na,Ca,U)
     
    1-2
    		(Nb,Ta,Ti)
     
    2
    		(O,OH)
     
    7
    4.DH.15Fluornatromicrolite
    (Na,Ca,Bi)
     
    2
    		Ta
     
    2
    		O
     
    6
    		F
    4.DH.15Bismutopyrochlore
    (Bi,U,Ca,Pb)
     
    1+x
    		(Nb,Ta)
     
    2
    		O
     
    6
    		(OH)·nH
     
    2
    		O
    4.DH.15Thorian Pyrochlore
    4.DH.15Elsmoreite
    WO
     
    3
    		·0.5H
     
    2
    		O
    4.DH.20Bismutostibiconite
    Bi(Sb
    5+
     
    		,Fe
    3+
     
    		)
     
    2
    		O
     
    7
    4.DH.20Bindheimite
    Pb
     
    2
    		Sb
     
    2
    		O
     
    6
    		(O,OH)
    4.DH.20Monimolite
    (Pb,Ca,Fe)
     
    3
    		Sb
     
    2
    		O
     
    7
    4.DH.20Partzite
    Cu
     
    2
    		Sb
     
    2
    		(O,OH)
     
    7
    4.DH.20Roméite
    (Ca,Fe,Mn,Na)
     
    2
    		(Sb,Ti)
     
    2
    		O
     
    6
    		(O,OH,F)
    4.DH.20Stetefeldtite
    Ag
     
    2
    		Sb
     
    2
    		(O,OH)
     
    7
    4.DH.20Stibiconite
    SbSb
     
    2
    		O
     
    6
    		(OH)
    4.DH.25Rosiaite
    PbSb
    5+
    2
    		O
     
    6
    4.DH.30Zirconolite
    CaZrTi
     
    2
    		O
     
    7
    4.DH.35Liandratite
    U(Nb,Ta)
     
    2
    		O
     
    8
    4.DH.35Petscheckite
    UFe(Nb,Ta)
     
    2
    		O
     
    8
    4.DH.40Ingersonite
    Ca
     
    3
    		MnSb
     
    4
    		O
     
    14
    4.DH.45Pittongite
    Na
     
    0.22
    		(W,Fe
    3+
     
    		)(O,OH)
     
    3
    		 · 0.44H
     
    2
    		O
    Related Minerals - Hey's Index Grouping:
    18.1.1Lithiotantite
    Li(Ta,Nb)
     
    3
    		O
     
    8
    18.1.2Lueshite
    NaNbO
     
    3
    18.1.3Natroniobite
    NaNbO
     
    3
    18.1.4Franconite
    Na
     
    2
    		Nb
     
    4
    		O
     
    11
    		·9H
     
    2
    		O
    18.1.5Natrotantite
    Na
     
    2
    		Ta
     
    4
    		O
     
    11
    18.1.6Irtyshite
    Na
     
    2
    		(Ta,Nb)
     
    4
    		O
     
    11
    18.1.7Rankamaite
    (Na,K,Pb,Li)
     
    3
    		(Ta,Nb,Al)
     
    11
    		(O,OH)
     
    30
    18.1.8Kalipyrochlore
    (K,Sr)
     
    2-x
    		Nb
     
    2
    		O
     
    6
    		(O,OH)·nH
     
    2
    		O
    18.1.9Calciotantite
    CaTa
     
    4
    		O
     
    11
    18.1.10Rynersonite
    Ca(Ta,Nb)
     
    2
    		O
     
    6
    18.1.11Microlite
    (Ca,Na)
     
    2
    		Ta
     
    2
    		O
     
    6
    		(O,OH,F)
    18.1.12Belyankinite
    Ca
     
    1-2
    		(Ti,Zr,Nb)
     
    5
    		O
     
    12
    		 · 9H
     
    2
    		O (?)
    18.1.13Latrappite
    (Ca,Na)(Nb,Ti,Fe)O
     
    3
    18.1.14Hochelagaite
    (Ca,Na,Sr)(Nb,Ti,Si,Al)
     
    4
    		O
     
    11
    		·8H
     
    2
    		O
    18.1.15Bariomicrolite
    Ba(Ta,Nb)
     
    2
    		(O,OH)
     
    7
    18.1.16Parabariomicrolite
    BaTa
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·2H
     
    2
    		O
    18.1.17Bariopyrochlore
    (Ba,Sr)
     
    2
    		(Nb,Ti)
     
    2
    		(O,OH)
     
    7
    18.1.18Alumotantite
    AlTaO
     
    4
    18.1.19Simpsonite
    Al
     
    4
    		(Ta,Nb)
     
    3
    		O
     
    13
    		(OH,F)
    18.1.20Sosedkoite
    (K,Na)
     
    5
    		Al
     
    2
    		(Ta,Nb)
     
    22
    		O
     
    60
    18.1.21Thoreaulite
    SnTa
     
    2
    		O
     
    6
    18.1.22Stannomicrolite
    (Sn,Fe,Mn)
     
    2
    		(Ta,Nb,Sn)
     
    2
    		(O,OH)
     
    7
    18.1.23Foordite
    (Sn,Pb)(Nb,Ta)
     
    2
    		O
     
    6
    18.1.24Changbaiite
    PbNb
     
    2
    		O
     
    6
    18.1.26Plumbomicrolite
    (Pb,Ca,U)
     
    2
    		Ta
     
    2
    		O
     
    6
    		(OH)
    18.1.27Stibiocolumbite
    Sb(Nb,Ta)O
     
    4
    18.1.28Stibiotantalite
    Sb(Ta,Nb)O
     
    4
    18.1.29Natrobistantite
    (Na,Cs)Bi(Ta,Nb,Sb)
     
    4
    		O
     
    12
    18.1.30Cesplumtantite
    (Cs,Na)
     
    2
    		(Pb,Sb
    3+
     
    		)
     
    3
    		Ta
     
    8
    		O
     
    24
    18.1.31Stibiomicrolite
    (Sb,Ca,Na)
     
    2
    		(Ta,Nb)
     
    2
    		O
     
    7
    18.1.32Cesstibtantite
    (Cs,Na)SbTa
     
    4
    		O
     
    12
    18.1.33 Stibobetafite
    (Ca,Sb)
     
    2
    		(Ti,Nb,Ta)
     
    2
    		(O,OH)
     
    7
    18.1.34Bismutotantalite
    Bi(Ta,Nb)O
     
    4
    18.1.35Bismutomicrolite
    (Bi,Ca)(Ta,Nb)
     
    2
    		O
     
    6
    		(OH)
    18.1.36Tantalite-(Mn)
    MnTa
     
    2
    		O
     
    6
    18.1.37Gerasimovskite
    (Mn,Ca)(Nb,Ti)
     
    5
    		O
     
    12
    		·9H
     
    2
    		O
    18.1.38Tapiolite-(Mn)
    (Mn,Fe)(Ta,Nb)
     
    2
    		O
     
    6
    18.1.39Columbite-(Mn)
    (Mn,Fe)(Nb,Ta)
     
    2
    		O
     
    6
    18.1.40Wodginite
    Mn(Sn,Ta)Ta
     
    2
    		O
     
    8
    18.1.41Ixiolite
    (Ta,Nb,Sn,Fe,Mn)
     
    4
    		O
     
    8
    18.1.42Columbite-(Fe)
    FeNb
     
    2
    		O
     
    6
    18.1.43Tantalite-(Fe)
    FeTa
     
    2
    		O
     
    6
    18.1.44Columbite
    (Fe,Mn)(Nb,Ta)
     
    2
    		O
     
    6
    18.1.45Tantalite
    (Fe,Mn)(Ta,Nb)
     
    2
    		O
     
    6
    18.1.46Tapiolite
    (Fe,Mn)(Ta,Nb)
     
    2
    		O
     
    6
    18.1.47Tapiolite-(Fe)
    (Fe,Mn)(Ta,Nb)
     
    2
    		O
     
    6
    18.1.48Columbite-(Mg)
    (Mg,Fe,Mn)(Nb,Ta)
     
    2
    		O
     
    6
    18.1.50Strüverite
    (Ti,Ta,Fe)O
     
    2
    18.1.51 Staringite
    (Fe,Mn)
     
    x
    		(Ta,Nb)
     
    2x
    		Sn
     
    6-3x
    		O
     
    12

    Other Names for Plumbopyrochlore

    German names:
    Plumbopyrochlor

    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 Plumbopyrochlore

    Reference List:American Mineralogist (1977): 62: 403.

    Internet Links for Plumbopyrochlore

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Plumbopyrochlore in the Natural History Museum (London) online catalogue
  • Plumbopyrochlore details from Handbook of Mineralogy (PDF)
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    Localities for Plumbopyrochlore

    Hide Locality List
    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
        • Darhan Muminggan United Banner
          • Bayan Obo
    		F. Pertlik, Z. Yang: Scientia Geologica Sinica 6:117-122 (1997)
    • Jiangxi Province
      • Ganzhou Prefecture
        • Dayu Co.
    		Rucheng Wang, Fontan, F., Xiaoming Chen, Huan Hu, Changshi Liu, Shijin Xu, and de Parseval, P. (2003): Canadian Mineralogist 41, 727-748.
    Czech Republic
     
    • Moravia (Mähren; Maehren)
      • Olomouc Region
        • Šumperk (Mährisch Schönberg)
          • Maršíkov
    		Novák, M., Černý, P.: Přehled minerálů niobu a tantalu z granitických pegmatitů České republiky. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1999, roč. 7, s. 117-131.; Novák, M.: Maršíkov - Scheibengraben. In Exkurzní průvodce po mineralogických lokalitách na Sobotínsku. Univerzita Palackého v Olomouci, 2002, Olomouc, s. 38-41.
    Mongolia
     
    • Hovd Aimag (Khovd Aimag)
      • Altai Mts
    		P.M. Kartashov data
    North Korea
     
    • Kangwon Province
      • Pyonggang-gun
    		Pavel M. Kartashov data
    Paraguay
     
    • Concepción Department
    		Alan R. Woolley: Alkaline Rocks and Carbonatites of the World, part 1, 206 (BMNH, London, 1987)
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Western Keivy Massif
    		A.V. Voloshin, Ya.A. Pakhomovskii Minerals and mineralformation evolution in amazonite pegmatites of Kola peninsula, - Leningrad, Nauka, 1986, pp.168.
    • Western-Siberian Region
      • Tyumenskaya Oblast'
        • Polar Urals
          • Labytnangi
    USA
     
    • Colorado
      • El Paso Co.
        • Cheyenne District (St. Peters Dome District)
    		"Minerals of Colorado, updated & revised", p. 14, by Eckel, Edwin B., 1997
    Minerals of Colorado (1997) Eckels, E. B.
      • Park Co.
        • Micanite District
    		Minerals of Colorado (1997) Eckels, E. B.
    • Nevada
      • Mineral Co.
        • Fitting District
          • Gillis Range
    		Mineralogical Record: 30: 277-292.
    • New Hampshire
      • Grafton Co.
        • Bethlehem
    		Rocks & Minerals Vol.65 No.4
    • Washington
      • Okanogan Co.
        • Golden Horn Batholith
    		P.M. Kartashov data and specimen
    Mineral and/or Locality
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