Mineralogy Database

Phosphowalpurgite Mineral Data

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General Phosphowalpurgite Information

Help on Chemical Formula: Chemical Formula: (UO2)Bi4(PO4)O4•2(H2O)
Help on Composition: Composition: Molecular Weight = 1,391.69 gm
   Calcium      0.23 %  Ca    0.32 % CaO
   Uranium     15.56 %  U    17.66 % UO2
   Vanadium     0.07 %  V     0.13 % V2O5
   Iron         0.28 %  Fe    0.40 % Fe2O3
   Copper       0.23 %  Cu    0.29 % CuO
   Silicon      0.08 %  Si    0.17 % SiO2
   Bismuth     58.71 %  Bi   65.46 % Bi2O3
   Arsenic      2.69 %  As    4.13 % As2O5
   Phosphorus   3.34 %  P     7.65 % P2O5
   Hydrogen     0.29 %  H     2.59 % H2O
   Lead         0.15 %  Pb    0.16 % PbO
   Oxygen      18.36 %  O
              ______        ______ 
              100.00 %       98.95 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (UO2)0.91Ca0.08Fe3+0.07Cu0.05Pb0.01Bi3.91O3.91(PO4)1.5(AsO4)0.5(SiO4)0.04(VO4)0.02�2(H2O)
Help on Environment: Environment: Occurs as small clusters in fissure and cavities in quartz gangue from the mine dump. Mineral is formed by the supergene alteration of uraninite and bismuth sulfides.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Ore depost near Smrkovec,k in western Bohemia, Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the phosphate (PO4---) analogue of walpurgite.
Help on Synonym: Synonym: IMA2001-062