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Girvasite Mineral Data
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General Girvasite Information
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 Chemical Formula: |
NaCa2Mg3(PO4)2[PO2(OH)2](CO3)(OH)2•4(H2O) |
| Composition: |
Molecular Weight = 628.07 gm |
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Sodium 3.66 % Na 4.93 % Na2O |
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Calcium 12.76 % Ca 17.86 % CaO |
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Magnesium 11.61 % Mg 19.25 % MgO |
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Phosphorus 14.79 % P 33.90 % P2O5 |
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Hydrogen 1.77 % H 15.78 % H2O |
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Carbon 1.91 % C 7.01 % CO2 |
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Oxygen 53.50 % O |
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______ ______ |
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100.00 % 98.73 % = TOTAL OXIDE |
| Empirical Formula: |
NaCa2Mg3(PO4)2(PO3OH)(CO3)(OH)2•4(H2O) |
| Environment: |
Low-temperature hydrothermal mineral filling solution cavities in dolomite carbonatite in a differentiated alkaline massif. |
| IMA Status: |
Approved IMA 1990 |
| Locality: |
Zheleznyi iron mine, Kovdor massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Lake Girvas, northwest of the Kovdor massif, Kola Peninsula, Russia. |
| Name Pronunciation: |
Girvasite + Pronunciation  |
| Synonym: |
ICSD 39339 |
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IMA1988-046 |
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PDF 42-1397 |
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