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Keckite Mineral Data
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General Keckite Information
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 Chemical Formula: |
Ca(Mn,Zn)2Fe+++3(PO4)4(OH)3•2(H2O) |
| Composition: |
Molecular Weight = 770.34 gm |
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Calcium 4.16 % Ca 5.82 % CaO |
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Magnesium 0.32 % Mg 0.52 % MgO |
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Manganese 12.12 % Mn 15.65 % MnO |
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Zinc 1.70 % Zn 2.11 % ZnO |
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Iron 21.75 % Fe 31.10 % Fe2O3 |
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Phosphorus 16.08 % P 36.85 % P2O5 |
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Hydrogen 0.88 % H 7.83 % H2O |
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Oxygen 42.99 % O |
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______ ______ |
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100.00 % 99.90 % = TOTAL OXIDE |
| Empirical Formula: |
Ca0.8Mg0.1Mn2+1.7Zn0.2Fe3+3(PO4)4(OH)2.7�2(H2O) |
| Environment: |
Weathering product of phosphate minerals in a complex granite pegmatite. |
| IMA Status: |
Approved IMA 1979 |
| Locality: |
Hagendorf quarry, Bavaria, Germany. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Erich Keck, Etzenricht, Germany, collector of Hagendorf minerals. |
| Name Pronunciation: |
Keckite  |
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