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Plumbopyrochlore Mineral Data
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General Plumbopyrochlore Information
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 Chemical Formula: |
(Pb,Y,U,Ca)2-xNb2O6(OH) |
| Composition: |
Molecular Weight = 484.00 gm |
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Calcium 0.83 % Ca 1.16 % CaO |
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Yttrium 3.67 % Y 4.67 % Y2O3 |
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Uranium 4.92 % U 5.91 % UO3 |
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Tantalum 3.74 % Ta 4.56 % Ta2O5 |
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Niobium 26.87 % Nb 38.44 % Nb2O5 |
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Iron 2.31 % Fe 2.97 % FeO |
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Silicon 1.16 % Si 2.48 % SiO2 |
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Hydrogen 0.10 % H 0.93 % H2O |
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Lead 34.25 % Pb 36.89 % PbO |
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Oxygen 22.15 % O |
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______ ______ |
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100.00 % 98.02 % = TOTAL OXIDE |
| Empirical Formula: |
Pb0.8Y0.2U0.1Ca0.1Nb1.4Si0.2Fe2+0.2Ta0.1O6.2(OH)0.5 |
| Environment: |
Metasomatically altered granitic rocks. |
| IMA Status: |
Approved IMA 1966 |
| Locality: |
Undisclosed locality in the Northern Ural Mountains, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
For lead, PLUMBum, in its composition and its relationship to pyrochlore. |
| Name Pronunciation: |
Plumbopyrochlore + Pronunciation  |
| Synonym: |
ICSD 45816 |
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PDF 25-453 |
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