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Wyllieite Mineral Data
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General Wyllieite Information
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 Chemical Formula: |
(Na,Ca,Mn++)(Mn++,Fe++)(Fe++,Fe+++,Mg)Al(PO4)3 |
| Composition: |
Molecular Weight = 451.11 gm |
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Sodium 3.06 % Na 4.12 % Na2O |
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Calcium 2.67 % Ca 3.73 % CaO |
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Magnesium 0.54 % Mg 0.89 % MgO |
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Manganese 9.74 % Mn 12.58 % MnO |
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Aluminum 5.98 % Al 11.30 % Al2O3 |
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Iron 14.86 % Fe 14.33 % FeO / 5.31 % Fe2O3 |
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Phosphorus 20.60 % P 47.20 % P2O5 |
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Oxygen 42.56 % O |
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______ ______ |
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100.00 % 99.47 % = TOTAL OXIDE |
| Empirical Formula: |
Na0.6Ca0.3Mn2+0.8Fe2+0.9Fe3+0.3Mg0.1Al(PO4)3 |
| Environment: |
In zoned complex granite pegmatite. |
| IMA Status: |
Approved IMA 1973 |
| Locality: |
Old Mike mine, 6 km north-northwest for Custer, Custer County, South Dakota, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Peter John Wyllie (1930-), Professor of Petrology and Geochemistry, University of Chicago, Chicago, Illinois, USA. |
| Name Pronunciation: |
Wyllieite + Pronunciation  |
| Synonym: |
ICSD 6203 |
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PDF 39-409 |
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