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Gjerdingenite-Na Mineral Data
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General Gjerdingenite-Na Information
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 Chemical Formula: |
(K,Na)2Na(Nb,Ti)4(Si4O12)2(OH,O)4•5H2O |
| Composition: |
Molecular Weight = 1,175.50 gm |
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Potassium 3.26 % K 3.93 % K2O |
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Barium 0.82 % Ba 0.91 % BaO |
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Sodium 2.97 % Na 4.01 % Na2O |
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Calcium 1.40 % Ca 1.96 % CaO |
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Titanium 6.07 % Ti 10.12 % TiO2 |
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Manganese 0.19 % Mn 0.24 % MnO |
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Niobium 19.21 % Nb 27.47 % Nb2O5 |
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Aluminum 0.11 % Al 0.22 % Al2O3 |
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Zinc 0.11 % Zn 0.14 % ZnO |
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Iron 0.43 % Fe 0.61 % Fe2O3 |
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Silicon 18.99 % Si 40.64 % SiO2 |
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Hydrogen 1.09 % H 9.75 % H2O |
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Oxygen 45.35 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
K0.98Na0.62Ca0.37Ba0.07Na0.9Ca0.04Mn2+0.04Zn0.02Nb2.43Ti1.49Fe3+0.09Si7.95Al0.05O24
(OH)2.09O1.91�5.32(H2O) |
| Environment: |
Found in peralkaline pegmatites related to agpaitic feldspathoidal syenites as an alteration product of vuonnemite. Labuntsovite group |
| IMA Status: |
Approved IMA 2005 (Dana # Added) |
| Locality: |
De-Mix quarry, Mont Saint-Hilaire, Quebec, Canada Link to MinDat.org Location Data. |
| Name Origin: |
Named as the Na-dominant analogue of gjerdingenite-Fe |
| Synonym: |
IMA2005-030 |
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