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Zero valent dominant member of Pyrochlore Group

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About Zero valent dominant member of Pyrochlore GroupHide

Formula:
A2Nb2(O,OH)6Z
A variety of Pyrochlore Group

A pyrochlore group member where there is a cation deficit comprised mainly of H2O or site vacancies. This name is used to describe any pyrochlore where it is not possible to specify more accurately than this.


Chemical Properties of Zero valent dominant member of Pyrochlore GroupHide

Formula:
A2Nb2(O,OH)6Z

First Recorded Occurrence of Zero valent dominant member of Pyrochlore GroupHide

Synonyms of Zero valent dominant member of Pyrochlore GroupHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
6 photos of Zero valent dominant member of Pyrochlore Group associated with Titan-uranoan Oxycalciopyrochlore(Ca,U,Na)2(Nb,Ti,Ta)2O6(O,OH)

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 Zero valent dominant member of Pyrochlore GroupHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Christy, A.G. and Atencio, D. (2013) Clarification of status of species in the pyrochlore supergroup. Mineralogical Magazine: 77: 13-20.

Internet Links for Zero valent dominant member of Pyrochlore GroupHide

Localities for Zero valent dominant member of Pyrochlore GroupHide

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.
Angola
 
  • Huambo Province
    • Bailundo City Council
Beleque, A. R. C. (2010). Minerais de ETR no complexo carbonatítico de Bailundo (Mungo, Angola): ocorrência, composição e significado económico.
Brazil
 
  • Goiás
Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
  • Minas Gerais
    • Araxá
Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.; Traversa, G., Gomes, C. B., Brotzu, P., Buraglini, N., Morbidelli, L., Principato, M. S., ... & Ruberti, E. (2001). Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil). Anais da Academia Brasileira de Ciências, 73(1), 71-98.
    • Tapira
Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
  • Paraíba
Beurlen, H., Soares, D. R., Thomas, R., Prado-Borges, L. E. & Castro, C. (2005): Mineral chemistry of tantalate species new in the Borborema Pegmatitic Province,northeast Brazil. Anais da Academia Brasileira de Ciências: 77: 169-182; Atencio D., Andrade M.B., Christy A.G., Giere R., Kartashov P.M. (2010): The pyrochlore supergroup of minerals: nomenclature. Canadian Mineralogist, 48, 569-594.
Denmark
 
  • Greenland
    • Qeqqata
      • Maniitsoq Island
        • Maniitsoq
Knudsen, C. (1989) Pyrochlore group minerals from the Quqassuk carbonatite complex. In Lanthanides, Tantalum and Niobium (P.Möller, P. Černý, & F. Saipé, eds.). springer-Verlag, Berlin, Germany; Atencio, D., Andrade, M.B., Christy, A.G., Gieré, R., Kartashov, P.M. (2010) The pyrochlore supergroup of minerals: nomenclature. The Canadian Mineralogist: 48: 673-698.
DR Congo
 
  • North Kivu
    • Beni Territory
      • Bashu
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 42; Mineral. Deposita (Berl.) 6, 153-155 (1971)
    • Rutshuru Territiory
      • Bwito
Wall, F., W Williams, C.T., Woolley, A.R. & Nasraoui, M. (1996): Pyrochlore from weathered carbonatite at Lueshe, Zaire. Mineralogical Magazine 60, 731-750; Atencio D., Andrade M.B., Christy A.G., Giere R., Kartashov P.M. (2010): The pyrochlore supergroup of minerals: nomenclature. Canadian Mineralogist, 48, 569-594.
Kenya
 
  • Kwale County
Harris, P.M. (1965) Pandaite [= bariopyrochlore] from the Mrima Hill niobium deposit (Kenya). Mineralogical Magazine 35:270, 277-290.
Myanmar
 
  • Mandalay Region
    • Pyin-Oo-Lwin District
      • Mogok Township
        • Kyauk-Pyat-That
          • Thurein-taung
Pavel M. Kartashov analytical data (2010)
Romania
 
  • Harghita
Hirtopanu, P. (2006). One hundred minerals for one hundred years (dedicated to the Centennial of the Geological Institute of Romania). In 3rd Conference on Mineral Sciences in the Carpathians, Miskolc Hungary. Acta Mineralogica–Petrographica, Abstract series (Vol. 5, p. 86).
Russia
 
  • Buryatia
    • Mama River Basin
      • Maigunda River
Ganzeev, A.A., Efimov, A.F. & Lyubomilova, G.V. (1969): Plumbobetafite – a new mineral variety of the pyrochlore group. Trudy Mineralogiches Muzeya, Akademiya Nauk SSSR 19, 135-137 (in Russian); Atencio D., Andrade M.B., Christy A.G., Giere R., Kartashov P.M. (2010): The pyrochlore supergroup of minerals: nomenclature. Canadian Mineralogist, 48, 569-594.
  • Murmansk Oblast
    • Khibiny Massif
    • Kolsky District
Sorokhtina, N.V., Chukanov, N.V., Voloshin, A.V., Pakhomovsky, Y.A., Bogdanova, A.N., and Moiseev, M.M. (2008): Geology of Ore Deposits 50(7), 620-628.
    • Northern Karelia
Kalita, A. P. (1959) New data on some minerals of the Alakurtti veins. Trudy Inst. Mineral. Geokhimii Kristallokhimii Redkikh Elementov: 2: 164-172 (in Russian); Atencio D., Andrade M.B., Christy A.G., Giere R., Kartashov P.M. (2010): The pyrochlore supergroup of minerals: nomenclature. Canadian Mineralogist, 48, 569-594.
Zaitsev, A. N., Sitnikova, M. A., Subbotin, V. V., Fernández-Suárez, J., Jeffries, T. E., & Wall, F. (2004). Sallanlatvi complex—a rare example of magnesite and siderite carbonatites. Phoscorites and carbonatites from mantle to mine: the key example of the Kola Alkaline Province. Mineralogical Society, London, 201-245.
www.koeln.netsurf.de/~w.steffens/vuori.htm
Tanzania (FRL)
 
  • Mbeya Region
    • Mbeya
Jäger, E., Niggli, E. & van der Veen, A.H. (1959): A hydrated barium–strontium pyrochlore in a biotite rock from Panda Hill, Tanganyika. Mineralogical Magazine: 32: 10-25
USA
 
  • Wisconsin
    • Marathon Co.
      • Wausau Intrusive Complex
        • Stettin pluton
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 42
 
Mineral and/or Locality  
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