Chemical Formula: (Pb,Y,U,Ca)2-xNb2O6(OH)
Help on Composition: Composition: Molecular Weight = 484 g
 
Hydrogen 0.10 % H 0.93 % H2O 0.00 %
Oxygen 22.15 % O 0.00 % 0.00 %
Silicon 1.16 % Si 2.48 % SiO2 0.00 %
Calcium 0.83 % Ca 1.16 % CaO 0.00 %
Iron 2.31 % Fe 2.97 % FeO 0.00 %
Yttrium 3.67 % Y 4.67 % Y2O3 0.00 %
Niobium 26.87 % Nb 38.44 % Nb2O5 0.00 %
Tantalum 3.74 % Ta 4.56 % Ta2O5 0.00 %
Lead 34.25 % Pb 36.89 % PbO 0.00 %
Uranium 4.92 % U 5.91 % UO3 0.00 %


100.00 % 98.01 %
 
Help on Empirical Formula: Empirical Formula: Pb0.8Y0.2U0.1Ca0.1Nb1.4Si0.2Fe2+0.2Ta0.1O6.2 (OH)0.5
Help on Environment: Environment: Metasomatically altered granitic rocks
Help on Locality: Locality: Undisclosed locality in the Northern Ural Mountains, Russia.. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For lead, PLUMBum, in its composition and its relationship to pyrochlore
Help on Synonym: Synonym: