General Ercitite Information
|
 Chemical Formula: |
Na2(H2O)4[Mn+++2(OH)2(PO4)2] |
| Composition: |
Molecular Weight = 225.83 gm |
| |
Sodium 9.06 % Na 12.21 % Na2O |
| |
Calcium 0.71 % Ca 0.99 % CaO |
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Manganese 12.89 % Mn 18.53 % Mn2O3 |
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Iron 11.38 % Fe 16.26 % Fe2O3 |
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Phosphorus 13.85 % P 31.74 % P2O5 |
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Hydrogen 2.23 % H 19.94 % H2O |
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Oxygen 49.88 % O |
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______ ______ |
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100.00 % 99.68 % = TOTAL OXIDE |
| Empirical Formula: |
Na0.89Ca0.04Mn3+0.53Fe3+0.46(PO4)1.01(OH)•2(H2O) |
| Environment: |
Strongly oxidizing, low-temperature hydrothermal alteration. Found as an overgrowth on collinsite, fairfieldite, whitlockite, and other phosphates on a fracture surface the cuts an altered nodule of lithophllite. |
| IMA Status: |
Approved IMA 1999 (Dana # Added) |
| Locality: |
Tanco pegmatite at Bernic Lake, southeastern Maitoba, Canada. Link to MinDat.org Location Data. |
| Name Origin: |
Named for mineralogist T. Scott Ercit (1957-) of the Canadian Museum of Nature, Ottawa, Canada. |
| Synonym: |
IMA1999-036 |
| |
