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Ishikawaite Mineral Data
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General Ishikawaite Information
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 Chemical Formula: |
(U,Fe,Y,Ca)(Nb,Ta)O4 (?) |
| Composition: |
Molecular Weight = 294.45 gm |
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Calcium 1.36 % Ca 1.90 % CaO |
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Yttrium 6.04 % Y 7.67 % Y2O3 |
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Uranium 24.25 % U 27.51 % UO2 |
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Tantalum 15.36 % Ta 18.76 % Ta2O5 |
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Niobium 23.66 % Nb 33.85 % Nb2O5 |
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Iron 7.59 % Fe 9.76 % FeO |
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Oxygen 21.73 % O |
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______ ______ |
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100.00 % 99.46 % = TOTAL OXIDE |
| Empirical Formula: |
U0.3Fe2+0.4Y0.2Ca0.1Nb0.75Ta0.25O4 |
| Environment: |
In pegmatites. |
| IMA Status: |
Valid Species (Pre-IMA) 1922 |
| Locality: |
Ishikawa, Ivaki Province, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
Named after its locality. |
| Name Pronunciation: |
Ishikawaite + Pronunciation  |
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