• Plumbopyrochlore Mineral Data

    webmineral.com/data/Plumbopyrochlore.shtml Plumbopyrochlore Columbite-(Mn). Comments: Yellow-brown plumbopyrochlore crystalline crust over black manganocolumbite grain.Such plumbopyrochlore-manganocolumbite ovoids with different grade of replacement are very typical for the locality.
  • Plumbopyrochlore (of Skorobogatova et al.): Mineral ...

    www.mindat.org/min-3228.html Plumbopyrochlore (of Skorobogatova et al.) mineral data, information about Plumbopyrochlore (of Skorobogatova et al.), its properties and worldwide ...
  • Plumbopyrochlore (Pb Y U Ca)2 xNb2O6(OH)

    www.handbookofmineralogy.com/pdfs/plumbopyrochlore.pdf Plumbopyrochlore (Pb,Y,U,Ca)2−xNb2O6(OH) c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Cubic. Point Group: [4/m32/m] (by analogy to the pyrochlore group). As octahedral crystals, granular, and rims on columbite crystals.
  • Pyrochlore - Wikipedia

    en.wikipedia.org/wiki/Plumbopyrochlore Pyrochlore (Na,Ca) 2 Nb 2 O 6 (OH,F) is a mineral group of the niobium end member of the pyrochlore supergroup. The general formula, A 2 B 2 O 7 (where A and B are metals), represent a family of phases isostructural to the mineral pyrochlore. Pyrochlores are an important class of materials in diverse technological applications such as luminescence, ionic conductivity, nuclear waste ...
  • Plumbopyrochlore dictionary definition | plumbopyrochlore ...

    www.yourdictionary.com/plumbopyrochlore plumbopyrochlore definition: Noun 1. (mineralogy) An isometric-hexoctahedral mineral containing calcium, hydrogen, iron, lead, niobium, oxygen, silicon, tantalum ...
  • New NH mineral photos 36 - mindatnh.org

    www.mindatnh.org/New%20Gallery%2036.html In a personal communication from Dr. Eugene Foord, mineralogist of the Smithsonial Instution, to Robert Janules, Merrimack, NH, August 1989, Dr Foorde stated: "Specimen no. 4 (Sugarloaf specimen), a honey brown octahedron, was indeed plumbopyrochlore."
  • Plumbopyrochlore (of Atencio et al.): Mineral information ...

    www.mindat.org/min-40351.html Plumbopyrochlore (of Atencio et al.) mineral data, information about Plumbopyrochlore (of Atencio et al.), its properties and worldwide locations.
  • Uranpyrochlore Mineral Data

    webmineral.com/data/Uranpyrochlore.shtml Estimated Radioactivity from Uranpyrochlore - very strong ; Specimen Size Weight/Volume (Sphere) * Calculated Activity Becquerels (Bq) Calculated Activity Curies (Ci) Estimated
  • plumbopyrochlore - Wiktionary

    en.wiktionary.org/wiki/plumbopyrochlore (mineralogy) An isometric-hexoctahedral mineral containing calcium, hydrogen, iron, lead, niobium, oxygen, silicon, tantalum, uranium, and yttrium
  • Mineral Gallery - The Rare Earth Oxides Group

    www.galleries.com/minerals/oxides/rare_ear.htm The Rare Earth Oxides Group is sometimes referred to as just the Rare Earths or sometimes as REO. This group of minerals is purely an informal group as most official mineral groups are related first by structural similarities and secondly by chemistry.