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Yttrocolumbite-(Y) Mineral Data
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General Yttrocolumbite-(Y) Information
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 Chemical Formula: |
(Y,U,Fe++)(Nb,Ta)O4 |
| Composition: |
Molecular Weight = 296.62 gm |
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Yttrium 17.98 % Y 22.84 % Y2O3 |
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Uranium 16.05 % U 18.21 % UO2 |
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Tantalum 15.25 % Ta 18.62 % Ta2O5 |
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Niobium 23.49 % Nb 33.61 % Nb2O5 |
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Iron 5.65 % Fe 7.27 % FeO |
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Oxygen 21.58 % O |
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______ ______ |
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100.00 % 100.54 % = TOTAL OXIDE |
| Empirical Formula: |
Y0.6U0.2Fe2+0.3Nb0.75Ta0.25O4 |
| IMA Status: |
Valid Species (Pre-IMA) 1837 |
| Locality: |
Mozambique. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the composition (Ytterbium, Columbium (former name for niobium)). |
| Name Pronunciation: |
Yttrocolumbite-(Y) + Pronunciation  |
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