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Yttrotantalite-(Y) Mineral Data
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General Yttrotantalite-(Y) Information
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 Chemical Formula: |
(Y,U,Fe++)(Ta,Nb)O4 |
| Composition: |
Molecular Weight = 315.74 gm |
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Yttrium 19.71 % Y 25.03 % Y2O3 |
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Uranium 7.54 % U 8.55 % UO2 |
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Tantalum 40.12 % Ta 48.98 % Ta2O5 |
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Niobium 8.83 % Nb 12.63 % Nb2O5 |
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Iron 3.54 % Fe 4.55 % FeO |
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Oxygen 20.27 % O |
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______ ______ |
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100.00 % 99.75 % = TOTAL OXIDE |
| Empirical Formula: |
Y0.7Fe2+0.2U0.1Ta0.7Nb0.3O4 |
| Environment: |
Accessory mineral in granite pegmatites. |
| IMA Status: |
Valid Species (Pre-IMA) 1802 |
| Locality: |
Ytterby, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named for its YTTRium content and relation to tantalite. |
| Name Pronunciation: |
Yttrotantalite-(Y) + Pronunciation  |
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