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Uranpyrochlore (of Hogarth 1977)

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Red, Red-brown, ...
Adamantine, Resinous
4 - 5
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.
Uranpyrochlore was discredited by Atencio et al. (2010). The samples named as uranpyrochlore in previous literature are not fulfilling the conditions according to the new nomenclature of the pyrochlore supergroup to be name as a uranpyrochlore.

Classification of Uranpyrochlore (of Hogarth 1977)


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

2 : A2B2O6(O,OH,F)

18 : Niobates and Tantalates
4 : Niobates and tantalates containing both U and rare earths

Physical Properties of Uranpyrochlore (of Hogarth 1977)

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

Optical Data of Uranpyrochlore (of Hogarth 1977)


Chemical Properties of Uranpyrochlore (of Hogarth 1977)

Elements listed in formula:

Crystallography of Uranpyrochlore (of Hogarth 1977)

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

First Recorded Occurrence of Uranpyrochlore (of Hogarth 1977)

Relationship of Uranpyrochlore (of Hogarth 1977) to other Species

4.DH.15Bariomicrolite (of Hogarth 1977)
4.DH.15Bariopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
4.DH.15Betafite (of Hogarth 1977)A2-mB2X6-wY1-n
4.DH.15Bismutomicrolite (of Hogarth 1977)
4.DH.15Calciobetafite (of Mazzi & Munno)(Ca,Na)2(Nb,Ti)2(O,OH)7
4.DH.15Ceriopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
4.DH.15Plumbopyrochlore (of Skorobogatova et al.)A2Nb2(O,OH)6Z
4.DH.15Plumbomicrolite (of Hogarth 1977)
4.DH.15Plumbobetafite (of Hogarth 1977)A2-mB2X6-wY1-n
4.DH.15Stibiomicrolite (of Groat et al.)
4.DH.15Strontiopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
4.DH.15Stannomicrolite (of Hogarth 1977)
4.DH.15Stibiobetafite (of Černý et al.)A2-mB2X6-wY1-n
4.DH.15Yttrobetafite (of Hogarth 1977)A2-mB2X6-wY1-n
4.DH.15Yttropyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
4.DH.15Bismutopyrochlore (of Chukanov et al.)A2Nb2(O,OH)6Z
4.DH.20Stibiconite(Sb,O,OH) ?
18.4.9Yttropyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
18.4.10Calciobetafite (of Mazzi & Munno)(Ca,Na)2(Nb,Ti)2(O,OH)7
18.4.11Yttrobetafite (of Hogarth 1977)A2-mB2X6-wY1-n

Other Names for Uranpyrochlore (of Hogarth 1977)

Name in Other Languages:

Other Information

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 Uranpyrochlore (of Hogarth 1977)

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

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

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.

Hogarth, D. D. (1977): Classification and nomenclature of the pyrochlore group. American Mineralogist. 62, 403-410.

Mineralogical Magazine (1989): 53: 257.

Atencio D., Andrade M.B., Christy A.G., Giere R., Kartashov P.M. (2010): The pyrochlore supergroup of minerals: nomenclature. Canadian Mineralogist, 48, 673-698

Internet Links for Uranpyrochlore (of Hogarth 1977) URL:
Please feel free to link to this page.
The following Uranpyrochlore (of Hogarth 1977) specimens are currently listed for sale on

Localities for Uranpyrochlore (of Hogarth 1977)

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
  • Helmand Province (Hilmend Province; Hilmand Province)
    • Dushan District
      • Khanneshin complex
Orris, G.J., and Bliss, J.D. (2002): Mines and Mineral Occurrences of Afghanistan. United States Geological Survey Open-File Report 02-110
  • Carinthia
    • Gurktaler Alpen
      • Gurk valley
        • Straßburg
G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
  • Amazonas
    • Presidente Figueiredo
      • Pitinga mine
A. C. Bastos Neto, V. P. Pereira, L. H. Ronchi, E. F. de Lima and J. C. Frantz (2009): The world-class Sn, Nb, Ta, F (Y, REE, Li) deposit and the massive cryolite associated with the albite-enriched facies of the Madeira A-type granite, Pitinga mining district, Amazonas State, Brazil. Canadian Mineralogist 47, 1329-1357.
  • Paraíba
    • Borborema mineral province
      • Nova Palmeira
Beurlen, H., Soares, D. R., Thomas, R., Prado-Borges, L. E., & Castro, C. D. (2005). Mineral chemistry of tantalate species new in the Borborema Pegmatitic Province, Northeast Brazil. Anais da Academia Brasileira de Ciências, 77(1), 169-182
  • Rio Grande do Norte
    • Borborema mineral province
      • Parelhas
Beurlen, H., Soares, D. R., Thomas, R., Prado-Borges, L. E., & Castro, C. D. (2005). Mineral chemistry of tantalate species new in the Borborema Pegmatitic Province, Northeast Brazil. Anais da Academia Brasileira de Ciências, 77(1), 169-182.
[MinRec 29:196]; Beurlen, H., Soares, D. R., Thomas, R., Prado-Borges, L. E., & Castro, C. D. (2005). Mineral chemistry of tantalate species new in the Borborema Pegmatitic Province, Northeast Brazil. Anais da Academia Brasileira de Ciências, 77(1), 169-182.
  • São Paulo
    • Cajati
[MinRec 15:266]
  • British Columbia
    • Kamloops Mining Division
      • Blue River carbonatites
        • Verity claim
Blue River Carbonatites, British Columbia- Primary Exploration Targets for Tantalum, G.J. Simandle,P.C. Jones, M. Rotella Exploration and Mining in British Columbia - 2001, B. C. Mines Report, pg 123-131 (
  • Manitoba
    • Bird River Greenstone Belt
M. Masau, P. Cerny, M.A. Cooper, R. Chapman & J. Grice (2002) Can. Mineral. 40, 1649-1655
  • Ontario
    • Hastings Co.
      • Monteagle Township
American Mineralogist 27:226; Hugh S. Spence (1930) Pegmatite minerals of Ontario and Quebec. American Mineralogist 15:430-450; Hewitt, D. F. (1967) Pegmatite Mineral Resources of Ontario. Geological Survey of Canada Industrial Mineral Report 21
No reference listed
    • Nipissing District
      • BMA 565884 Township
        • Manitou Island Complex
Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
  • Québec
    • Laurentides
      • Deux-Montagnes RCM
        • Oka
          • Oka complex
ZUREVINSKI, S.E. AND MITCHELL, R.H. (2004) Extreme compositional variation of pyrochlore-group minerals at the Oka carbonatite complex, Canadian Mineralogist, 42, 1159-1168.
ZUREVINSKI, S.E. AND MITCHELL, R.H. (2004) Extreme compositional variation of pyrochlore-group minerals at the Oka carbonatite complex, Canadian Mineralogist, 42, 1159-1168.
    • Nord-du-Québec
      • Baie-James
        • Otish Mts
SASSANO, G. & ROCHELEAU, M. (1987) Quelques minéraux d'uranium des Bassin d'Otish et de Mistassini, Québec. Canadian Mineralogist 25, 185-193.
  • Liaoning Province (Manchuria; Dongbei Region)
    • Dandong Prefecture
      • Fengcheng Co.
        • Saima complex
Saima Deposit Research Group, Beijing Institute of Uranium Geology (1978): Scientia Sinica 11(3), 365-389
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)
    • Moravia-Silesia Region
      • Bruntál
        • Praděd (Altvater)
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    • Olomouc Region
      • Šumperk (Mährisch Schönberg)
        • Maršíkov (Marchendorf)
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
        • Drahonín
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.
  • Red Sea Governorate
    • Eastern Desert
Mineral. Deposita 43 (2008) 933-944.
  • Lapland Region
    • Savukoski
      • Tulppio
Vartiainen, H. 1980 The petrography, mineralogy and petrochemistry of the Sokli carbonative massif, northern Finland. Geological Survey of Finland, Bulletin, 313
  • Auvergne-Rhône-Alpes
    • Allier
      • Ébreuil
        • Échassières
Rucheng Wang, Fontan, F., and Monchoux, P. (1994): Acta Petrologica et Mineralogica 13(2)
  • Occitanie
    • Hautes-Pyrénées
      • La Barthe-de-Neste
        • Avezac-Prat-Lahitte
MONCHOUX P., FONTAN F., DE PARSEVAL P., MARTIN R. F., WANG R. C. (2006) - Igneous albitite dikes in orogenic lherzolithes, Western Pyrénées, France: A possible source for corundum and alkali feldspar xenocrysts in basaltic terranes. I. Mineralogical Asssociations. The Canadian Mineralogist, Vol. 44, pp. 817-842.
  • Baden-Württemberg
    • Kaiserstuhl
      • Schelingen
        • Orberg - Badberg area
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
  • Bavaria
    • Upper Palatinate
      • Waidhaus
        • Hagendorf
Keck, E., (1989): Uran im Pegmatit von Hagendorf-Süd, Der Aufschluss, Vol. 40, 269-290
  • Rhineland-Palatinate
    • Eifel
      • 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
Blass, G.; Graf, H.W., Neue Mineralienfunde aus der Vulkaneifel , Mineralien-Welt 12/1, 17-25, 2001
      • Rieden volcano
        • Bell
Blass, G., Graf, HW., Kolitsch, U., Neue Funde und Mineralien aus der Eifel, Mineralienwelt 1/2002
  • Qeqqata
    • Maniitsoq (Sukkertoppen)
Petersen, O. V. and Secher, K. (1993): The minerals of Greenland, The Mineralogical Record, Vol. 24(2), 1-65
  • 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
      • Sacrofano Caldera
        • Campagnano di Roma
AA. VV., 1996. Collezionare minerali. Hobby & Work.
    • Viterbo Province
      • Vico Lake
No reference listed
  • Lombardy
    • Sondrio Province
      • Valchiavenna
        • Bregaglia Valley
AA. VV., 1996. Collezionare minerali. Hobby & Work.
  • Antananarivo Province
    • Vakinankaratra Region
RRUFF specimen R060165
[var: Samiresite] Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 374
        • Tritriva Commune
[var: Samiresite] Bull. Soc. franc.Mineral. 35 (1912), pp 84-92/ A.Lacroix: (1922) Mineralogie de Madagascar I ,p 283
Lacroix, A. (1908): Les minéraux des filons de pegmatite á tourmaline lithique de Madagascar. Bulletin de la Société Francaise de Minéralogie 31: 218- 247
        • Sahatany Valley
Knut Edvard Larsen collection (XRD, metamict + SEM identified)
  • Fianarantsoa Province
    • Amoron'i Mania Region
      • Fandriana District
[var: Samiresite] Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
  • Chitipa District
    • Songwe Complex
Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
  • Erongo Region
    • Brandberg Area
Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
  • Aust-Agder
Hawthorne, F.C., Groat, L.A., Raudsepp, M., Ball, N.A., Kimata, M., Spike, F.D., Gaba, R., Halden N.M. & Lumpkin, G.R. (1991): Alphadecay damage of titanite. American Mineralogist, 76, 370-396
  • Telemark
    • Nome
Bjørlykke & Svinndal (1960) in Vokes, F.M. (ed) (1960): Mines in South and Central Norway. International Geological Congress XXI session, Norway. Norges Geologiske Undersøkelse, 212m, 1-73 (p.23); Neumann, H. (1985): Norges Mineraler. Norges Geologiske Undersøkelse Skrifter 68, (p.67)
  • Concepción Department
Woolley, A.R. (1987) Alkaline rocks and carbonatites of the world. p 206. (British Museum of Natural History, London)
  • Lower Silesia (Dolnośląskie)
    • Dzierżoniów District
      • Piława Górna (Ober Peilau; Gnadenfrei)
PIECZKA et al. 2010: Nb-Ta minerals in pegmatites in the DSS mine at Piława Górna, Góry Sowie Block, southwestern Poland. Mineralogia - Special Papers, 37.
    • Sowie Mts
Łodziński M. & Pieczka A. 2008: (Nb-Ta)-oxide minerals from pegmatites of the Owiesno-Kietlice area in the Sowie Mts block, Southwestern Poland. Mineralogia - Special Papers, vol. 32, p. 107
  • Harghita Co.
    • Ditrău (Ditró)
Szakáll, S. & Kristály, F., Eds. (2010): Mineralogy of Székelyland, Eastern Transylvania, Romania. Csík County Nature and Conservation Society, Miercurea-Ciuc, Romania, 321 pp.
  • Eastern-Siberian Region
    • Prebaikalia (Pribaikal'e)
      • Irkutskaya Oblast'
Seltmann, R., Soloviev, S., Shatov, V., Pirajno, F., Naumov, E., & Cherkasov, S. (2010). Metallogeny of Siberia: tectonic, geologic and metallogenic settings of selected significant deposits*. Australian Journal of Earth Sciences, 57(6), 655-706
        • Lake Baikal area
Pavel M. Kartashov data
    • Tuva Republic
      • Sayan Mts
        • Eastern Sayan
P.M. Kartashov data
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
Subbotin, R. P. L. V. V., & Pakhomovsky, Y. A. (1998). A new type of scandium mineralization in phoscorites and carbonatites of the Kovdor massif, Russia. Canadian Mineralogist 36:971-980. ; Zaitsev, A. N., Williams, C. T., Jeffries, T. E., Strekopytov, S., Moutte, J., Ivashchenkova, O. V., ... & Borozdin, A. P. (2014). Rare earth elements in phoscorites and carbonatites of the Devonian Kola Alkaline Province, Russia: examples from Kovdor, Khibina, Vuoriyarvi and Turiy Mys complexes. Ore Geology Reviews, 61, 204-225.
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
        • Vishnevye Mts (Vishnyovye; Cherry)
Nedosekova, I.L. (2007): Geology of Ore Deposits 49(2), 129-146.
  • Banská Bystrica Region
    • Banská Bystrica Co.
      • Brusno
Uher, P. ,Černý, P., 1998 : Vzácnoprvková mineralizácia v granitových pegmatitoch Nízkych Tatier. Mineralia Slovaca, 30, 2,93 – 94
South Africa
  • North West Province
    • Bojanala Platinum District
      • Western Bushveld Complex
R. Liferovich - L. Horváth p.c. (2004)
  • Lappland
    • Jokkmokk
  • Zaporozhskaya Oblast' (Zaporiz'ka; Zaporozh'e)
Greta J. Orris and Richard I. Grauch (2002) Rare Earth Element Mines, Deposits, and Occurrences. USGS Open File Report 02-189
    • Priazovie
Ryabchikov, I.D., Kogarko, L.N., Krivdik, S.G., and Ntaflos, T. (2008): Geology of Ore Deposits 50(6), 423-432.
  • Zhytomyr Oblast' (Zhitomir Oblast')
P.M. Kartashov data
  • Alaska
    • Yukon-Koyukuk Borough
      • Hot Springs District
U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
  • Colorado
    • Chaffee Co.
      • Turret District
Ralph Parkes
    • Fremont Co.
      • Eight Mile Park Pegmatite District
Minerals of Colorado (1997) E.B. Eckels
    • Gunnison Co.
      • Quartz Creek Pegmatite District
        • Brown Derby Mine
Minerals of Colorado (1997) E.B. Eckels
Minerals of Colorado (1997) Eckels, E. B.
    • Jefferson Co.
      • South Platte Pegmatite District
    • Park Co.
Rudy Boloña identification and collection, collected by Jim Hall
  • Connecticut
    • Middlesex Co.
      • Portland
Specimen in collection of Andrew Kruegel
  • New Hampshire
    • Carroll Co.
      • Albany
Rocks and Minerals, (1990) 65:286-296
  • New Mexico
    • Mora Co.
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
Am Min 1953 p1090
    • Rio Arriba Co.
      • Petaca District
        • Cribbenville area
Michael N. Spilde, Steve Dubyk, Brian Salem, and William P. Moats, (2011) Rare earth bearing-minerals of the Petaca district, Rio Arriba County, New Mexico. New Mexico Geological Society Fall Field Conference Guidebook – 62 Geology of the Tusas Mountains and Ojo Caliente pp. 389-398.
    • San Miguel Co.
      • Elk Mountain District
Minerals of New Mexico 3rd ed.; Jahns, R. H., (1946) Mica Deposits of the Petaca District, Rio Arriba County, New Mexico, with Brief Descriptions of the Ojo Caliente District, Rio Arriba County, and the Elk Mountain District, San Miguel County. NMBMGR Bulletin 25.
    • 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
        • Burnsville
          • Hurricane Mountain
Genth,1875, Minerals of North Carolina,Appendix C to Kerr,W.C,Report Geological Survey of North Carolina,Raleigh,
  • Virginia
    • Amelia Co.
      • Amelia (Amelia Court House)
Minerals of Virginia 1990 by R. V. Dietrich; Pegau, A. A. (1932). Pegmatite deposits of Virginia. Virginia Geological Survey Bulletin No. 33.
  • Wisconsin
    • Marathon Co.
Cordura, W
        • Nine Mile Pluton
  • Lai Chau Province
    • Phong Tho District
      • Mt Fansipan
Feldman l.G., Sarkisyan S.Sh., Boriskin V.P., Purusova S.P., Nguen Van Hoai, Chin Suan Ben (1987) Crystalline beckelite from Nam Se deposit (Northern Vietnam), - Mineralogicheskiy Zhurnal, v.9, N1, pp. 78-86 (in Rus.)
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