Mineralogy Database

Plumboagardite Mineral Data

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General Plumboagardite Information

Help on Chemical Formula: Chemical Formula: (Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O)
Help on Composition: Composition: Molecular Weight = 1,097.39 gm
   Calcium         1.02 %  Ca    1.43 % CaO
   Lanthanum       1.65 %  La    1.93 % La2O3
   Cerium          0.77 %  Ce    0.90 % Ce2O3
   Praeseodymium   0.13 %  Pr    0.15 % Pr2O3
   Samarium        0.14 %  Sm    0.16 % Sm2O3
   Gadolinium      0.14 %  Gd    0.17 % Gd2O3
   Dysprosium      0.15 %  Dy    0.17 % Dy2O3
   Yttrium         0.73 %  Y     0.93 % Y2O3
   Iron            1.07 %  Fe    1.53 % Fe2O3
   Copper         32.37 %  Cu   40.52 % CuO
   Silicon         0.69 %  Si    1.48 % SiO2
   Arsenic        19.39 %  As   29.74 % As2O5
   Phosphorus      0.14 %  P     0.32 % P2O5
   Hydrogen        1.16 %  H    10.39 % H2O
   Lead            8.31 %  Pb    8.95 % PbO
   Neodymium       1.05 %  Nd    1.23 % Nd2O3
   Oxygen         31.10 %  O
                 ______        ______ 
                 100.00 %       99.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb0.44La0.13Nd0.08Ce0.06Pr0.01Sm0.01Gd0.01Dy0.01Y0.09Ca0.28Cu5.59Fe3+0.21As2.84Si0.27 P0.05O12(OH)6�3.33(H2O)
Help on Environment: Environment: Formed in an oxidized zone, the product of alteration of primary Pb, Cu, REE, and As minerals such as chalcopyrite, fluorite, fahlore, and galena. Mixite group.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Found in an abandoned mine, Aitern-S�d, near Sch�nau in the Southern Black Forest, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as Pb (plumbo) analogue of agardite.
Help on Synonym: Synonym: IMA2003-031a