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Arrojadite-(KFe) Mineral Data
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General Arrojadite-(KFe) Information
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 Chemical Formula: |
KNa2CaNa2(Fe++,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 |
| Composition: |
Molecular Weight = 2,033.08 gm |
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Potassium 1.92 % K 2.32 % K2O |
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Sodium 4.52 % Na 6.10 % Na2O |
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Calcium 1.97 % Ca 2.76 % CaO |
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Magnesium 2.39 % Mg 3.96 % MgO |
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Manganese 10.81 % Mn 13.96 % MnO |
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Aluminum 1.33 % Al 2.51 % Al2O3 |
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Iron 19.23 % Fe 24.74 % FeO |
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Phosphorus 18.28 % P 41.89 % P2O5 |
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Hydrogen 0.12 % H 1.11 % H2O |
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Oxygen 38.95 % O |
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Fluorine 0.47 % F 0.47 % F |
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- %
F -0.20 % -O=F2 |
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______ ______ |
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100.00 % 99.61 % = TOTAL OXIDE |
| Empirical Formula: |
KNa2CaNa2Fe2+7Mn2+4Mg2Al(PO4)11(PO3OH)(OH)1.5F0.5 |
| IMA Status: |
Not Submitted IMA (Dana # Added) |
| Locality: |
(Nickel Plate Mine), Serra Branca, Paraiba, Brazil. Link to MinDat.org Location Data. |
| Name Origin: |
Named after arrojadite and site occupancy of the arrojadite structure. |
| Name Pronunciation: |
Arrojadite-(KFe) + Pronunciation  |
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