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Fillowite Mineral Data
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General Fillowite Information
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 Chemical Formula: |
Na2Ca(Mn,Fe++)7(PO4)6 |
| Composition: |
Molecular Weight = 1,042.27 gm |
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Sodium 4.41 % Na 5.95 % Na2O |
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Calcium 3.85 % Ca 5.38 % CaO |
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Manganese 26.36 % Mn 34.03 % MnO |
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Iron 10.72 % Fe 13.79 % FeO |
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Phosphorus 17.83 % P 40.86 % P2O5 |
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Oxygen 36.84 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Na2CaMn2+5Fe2+2(PO4)6 |
| Environment: |
Accessory mineral in a zoned granite pegmatite. |
| IMA Status: |
Valid Species (Pre-IMA) 1879 |
| Locality: |
Branchville, Fairfield County, Connecticut, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Abijah N. Fillow (1822-1895), of Branchville, Connecticut, who supplied minerals from his quarry at the locality. |
| Name Pronunciation: |
Fillowite + Pronunciation  |
| Synonym: |
ICSD 100869 |
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PDF 18-516 |
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