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Uranpyrochlore

Big Photo

Hybla, Monteagle Township, Bancroft District, Hastings Co., Ontario, Canada
© 2001 John H. Betts

Show Uranpyrochlore Photos (4)
Formula:
(U,Ca,Ce)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
System:IsometricColour:Red, Red-brown, ...
Lustre:Adamantine, ResinousHardness:4 - 5
Name:The name reflects its uranium content and similarity to pyrochlore.


Pyrochlore Group. Pyrochlore Subgroup. The uranium analogue of the other members of the Pyrochlore Subgroup and the niobium aalogue of Uranmicrolite.

Classification of Uranpyrochlore

IMA status:Approved
Strunz 8th edition ID:4/C.17-90
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:8.2.1.7

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
2 : A2B2O6(O,OH,F)
Hey's CIM Ref.:18.4.1

18 : Niobates and Tantalates
4 : Niobates and tantalates containing both U and rare earths
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Type Occurrence of Uranpyrochlore

Type Locality:Mitchell Co., North Carolina, USA
Year of Discovery:1877

Physical Properties of Uranpyrochlore

Lustre:Adamantine, Resinous
Colour:Red, Red-brown, chocolate-brown to black, amber-yellow
Hardness (Mohs):4 - 5

Crystallography of Uranpyrochlore

Crystal System:Isometric
Cell Parameters:a = 10.44Å
Unit Cell Volume:V 1,137.89 ų (Calculated from Unit Cell)

Optical Data of Uranpyrochlore

Type:Isotropic

Chemical Properties of Uranpyrochlore

Formula:
(U,Ca,Ce)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
Essential elements:H, Nb, O, U
All elements listed in formula:Ca, Ce, F, H, Nb, O, Ta, U

Relationship of Uranpyrochlore 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.15Plumbopyrochlore
    (Pb,Y,U,Ca)
     
    2-x
    		Nb
     
    2
    		O
     
    6
    		(OH)
    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.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:
    18.4.2Yttrocolumbite-(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,Ta,Ti)
     
    2
    		O
     
    6
    18.4.6Tanteuxenite-(Y)
    (Y,Ce,Ca)(Ta,Nb,Ti)
     
    2
    		(O,OH)
     
    6
    18.4.7Kobeite-(Y)
    (Y,Zr)
     
    2
    		(Ti,Fe
    3+
     
    		)
     
    2
    		(O,OH)
     
    7
    18.4.8Polycrase-(Y)
    Y(Ti,Nb)
     
    2
    		O
     
    6
    18.4.9Yttropyrochlore-(Y)
    (Y,Na,Ca,U)
     
    1-2
    		(Nb,Ta,Ti)
     
    2
    		(O,OH)
     
    7
    18.4.10Calciobetafite
    (Ca,RE,Th,U)
     
    2
    		(Nb,Ta,Ti)
     
    2
    		O
     
    7
    18.4.11Yttrobetafite-(Y)
    (Y,U,Ce)
     
    2
    		(Ti,Nb,Ta)
     
    2
    		O
     
    6
    		OH
    18.4.12Samarskite-(Y)
    (Y,Fe
    3+
     
    		,Fe
    2+
     
    		,U,Th,Ca)
     
    2
    		(Nb,Ta)
     
    2
    		O
     
    8

    Other Names for Uranpyrochlore

    Synonyms:
    EllsworthiteHatchettolite
    German names:
    EllsworthitHatchettolitUranpyrochlor
    Spanish names:
    EllsworthitaHatchettolita
    Varieties:
    Samiresite

    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 Uranpyrochlore

    Reference List:Allen (1877), American Journal of Science: 14: 128.

    Smith (1877), American Journal of Science: 13: 365.

    Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 748.

    American Mineralogist (1977): 62: 403-410.

    Mineralogical Magazine (1989): 53: 257.

    Internet Links for Uranpyrochlore

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

    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.
    Austria
     
    • Carinthia
      • Gurktaler Alpen Mts
        • Gurk valley
          • Straßburg
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
    Brazil
     
    • Northeast Region
      • Rio Grande do Norte
        • Seridó Oriental
          • Parelhas
    		[MinRec 29:196]
    • Southeast Region
      • São Paulo
        • Cajati
    		[MinRec 15:266]
    Canada
     
    • Manitoba
      • Bird River Greenstone Belt
    • Ontario
      • Hastings Co.
        • Bancroft District
          • Monteagle Township
    		[www.johnbetts-fineminerals.com]
    [MinRec 13:199-200, 10:158, 13:85]
    No reference listed
    • Québec
      • Deux-Montagnes Co.
        • Oka complex
          • Oka
    		Can. Min. 42, 1159-1168
    Can. Min. 42, 1159-1168
    China
     
    • Liaoning Province (Manchuria; Dongbei Region)
      • Dandong Prefecture
        • Fengcheng Co.
    		http://geopubs.wr.usgs.gov/open-file/of02-189/of02-189.xls
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • South Bohemia Region
        • Písek
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    • Moravia (Mähren; Maehren)
      • Olomouc Region
        • Šumperk (Mährisch Schönberg)
          • Maršíkov
    		Novák, M.: Maršíkov - Scheibengraben. In Exkurzní průvodce po mineralogických lokalitách na Sobotínsku. Univerzita Palackého v Olomouci, 2002, Olomouc, s. 38-41.
      • South Moravia Region
        • Tišnov
          • Drahonin
    		Škoda, R., Novák, M.: Akcesorické Nb-Ta-Ti minerály z pegmatitu v uranovém dole Drahonín, strážecké moldanubikum. Acta Musei Moraviae, Scientiae geologicae, 2004, roč. 89, s. 55 - 66.
    Germany
     
    • Baden-Württemberg
      • Kaiserstuhl
        • Schelingen
          • Orberg Mt. - Badberg Mt. area
    		Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Bavaria
      • Upper Palatinate
        • Oberpfälzer Wald
          • Vohenstrauß
            • Waidhaus
              • Hagendorf
    		Keck, E., (1989): Uran im Pegmatit von Hagendorf-Süd, Der Aufschluss, Vol. 40, 269-290
    • Rhineland-Palatinate
      • Eifel Mts
        • Gerolstein
          • Rockeskyll
    		Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
        • Laach lake volcanic complex
          • Kruft
    		Blass, G.; Graf, H.W., Neue Mineralienfunde aus der Vulkaneifel , Mineralien-Welt 12/1, 17-25, 2001
          • Mendig
            • Niedermendig
    		Blass, G.; Graf, H.W., Neue Mineralienfunde aus der Vulkaneifel, Mineralien-Welt 12/1, 17-25, 2001
    Blass, G.; Graf, H.W., Neue Mineralienfunde aus der Vulkaneifel, Mineralien-Welt 12/1, 17-25, 2001
              • Wingertsberg Mt.
    		Blass, G.; Graf, H.W., Neue Mineralienfunde aus der Vulkaneifel , Mineralien-Welt 12/1, 17-25, 2001
        • Rieden volcano
          • Mayen
            • Ettringen
    		Blass, G., Graf, HW., Kolitsch, U., Neue Funde und Mineralien aus der Eifel, Mineralienwelt 1/2002
    Italy
     
    • Latium
      • Rome Province
    		Voltaggio M., Di Lisa G.A. (1995) - 230Th dating of uranpyrochlore in pyroclastic ejecta from the last products of explosive final activity of the Alban Hills volcanic complex (abs.). Periodico di Mineralogia, Roma, pp. 291-292
        • Campagnano di Roma
          • Sacrofano
            • Sacrofano Caldera
    		AA. VV., 1996. Collezionare minerali. Hobby & Work.
      • Viterbo Province
        • Vico Lake
    		No reference listed
    • Lombardy
      • Sondrio Province
        • Bregaglia Valley
    		AA. VV., 1996. Collezionare minerali. Hobby & Work.
    Madagascar
     
    • Antananarivo Province
      • Vakinankaratra Region (Betafo - Antsirabé region)
        • Sahatany Pegmatite Field (Mt Bity (Ibity) area)
    		[var: Samiresite] Bull. Soc. franc.Mineral. 35 (1912), pp 84-92/ A.Lacroix: (1922) Mineralogie de Madagascar I ,p 283
    • Fianarantsoa Province
      • Amoron'i Mania Region
        • Fandriana Department
    		[var: Samiresite] J.Behier(1963): Carte mineralogique de Madagascar. Archive Serv. Geol.Mad. A 1871
    Malawi
     
    • Chitipa District
      • Songwe Complex
    		Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
    Namibia
     
    • Erongo Region
      • Brandberg District
        • Brandberg area
    		Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
    Norway
     
    • Telemark
      • Nome
    		Vokes (1960b, p. 23); Neumann (1985, pp. 67 and 68).
    Russia
     
    • Eastern-Siberian Region
      • Transbaikalia (Zabaykalye)
        • Irkutskaya Oblast'
          • Lake Baikal area
    		Pavel M. Kartashov data
      • Tuva Republic
        • Sayan Mts
    		P.M. Kartashov data
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
    www.koeln.netsurf.de/~w.steffens/lovo.htm
    Slovakia
     
    • Banská Bystrica Region
      • Southern Low Tatra Mts
        • Brusno
    		Uher, P. ,Černý, P., 1998 : Vzácnoprvková mineralizácia v granitových pegmatitoch Nízkych Tatier. Mineralia Slovaca, 30, 2,93 – 94
    Sweden
     
    • Lappland
      • Jokkmokk
    Ukraine
     
    • Zaporozh'e Oblast'
      • Azov Sea Region
        • Novopoltavskii Massif
    • Zhytomyr Oblast' (Zhitomir Oblast')
    		P.M. Kartashov data
    USA
     
    • Colorado
      • Fremont Co.
        • Eight Mile Park pegmatite District
    		Minerals of Colorado (1997) E.B. Eckels
      • Gunnison Co.
        • Quartz Creek District
          • Ohio City
            • Brown Derby Mine
    		Minerals of Colorado (1997) E.B. Eckels
    Minerals of Colorado (1997) Eckels, E. B.
      • Jefferson Co.
        • South Platte Pegmatite District
    • New Mexico
      • Mora Co.
    		Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
    Am Min 1953 p1090
      • San Miguel Co.
        • Elk Mountain District
    		Minerals of New Mexico 3rd ed.
      • Taos Co.
        • Picuris District
    		Minerals of New Mexico 3rd ed.
    • North Carolina
      • McDowell Co.
    		joseph A.Mandarino and Malcolm E. Back, 2004, Fleischers Glossary of Mineral Species 2004, pg # 284
    8th Dana,pg. 345 and 7th Dana,1944,pg.751,752 and 754
        • Spruce Pine District
          • Spruce Pine
            • Greasy Creek Township
    		Genth,1891,pg.72 and pg.107
      • Yancey Co.
        • Spruce Pine District
          • Black Mtn-Bowlens Creek Area
            • Burnsville
              • Hurricane Mt.
    		Genth,1875, Minerals of North Carolina,Appendix C to Kerr,W.C,Report Geological Survey of North Carolina,Raleigh,Vol.1.pg.79
    • Virginia
      • Amelia Co.
        • Amelia (Amelia Court House)
    		Minerals of Virginia 1990 by R. V. Dietrich
    • Wisconsin
      • Marathon Co.
        • Rib Mountain
        • Wausau pluton
          • "Rotten granite" quarries
    		www.uwrf.edu/~wc01/pyrochlore.htm
    Mineral and/or Locality
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