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Ceriopyrochlore-(Ce) Mineral Data
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General Ceriopyrochlore-(Ce) Information
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 Chemical Formula: |
(Ce,Ca,Y)2(Nb,Ta)2O6(OH,F) |
| Composition: |
Molecular Weight = 560.46 gm |
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Calcium 4.29 % Ca 6.00 % CaO |
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Cerium 30.00 % Ce 35.14 % Ce2O3 |
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Yttrium 3.17 % Y 4.03 % Y2O3 |
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Zirconium 1.63 % Zr 2.20 % ZrO2 |
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Tantalum 25.83 % Ta 31.54 % Ta2O5 |
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Niobium 13.26 % Nb 18.97 % Nb2O5 |
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Iron 1.00 % Fe 1.28 % FeO |
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Hydrogen 0.13 % H 1.21 % H2O |
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Oxygen 19.84 % O |
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Fluorine 0.85 % F 0.85 % F |
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- %
F -0.36 % -O=F2 |
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______ ______ |
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100.00 % 100.86 % = TOTAL OXIDE |
| Empirical Formula: |
Ce1.2Ca0.6Y0.2Nb0.8Ta0.8Zr0.1Fe2+0.1O6.2(OH)0.75F0.25 |
| Environment: |
In pegmatites related to alkalic igneous rocks and in nepheline syenites. |
| IMA Status: |
Approved IMA 1977 |
| Locality: |
From Wasau, Marathon County, Wisconsin, USA. Link to MinDat.org Location Data. |
| Name Origin: |
From the similarity to pyrochlore and the cerium content. |
| Synonym: |
Marignacite |
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