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Ilimaussite-(Ce) Mineral Data
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General Ilimaussite-(Ce) Information
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 Chemical Formula: |
(Ba,Na)10K3Na4.5Ce5(Nb,Ti)6[Si12O36][Si9O18(O,OH)24]O6 |
| Composition: |
Molecular Weight = 4,253.30 gm |
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Potassium 3.25 % K 3.92 % K2O |
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Barium 22.05 % Ba 24.62 % BaO |
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Sodium 3.79 % Na 5.11 % Na2O |
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Strontium 0.06 % Sr 0.07 % SrO |
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Lanthanum 2.65 % La 3.10 % La2O3 |
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Cerium 6.72 % Ce 7.87 % Ce2O3 |
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Praeseodymium 2.15 % Pr 2.52 % Pr2O3 |
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Thorium 1.04 % Th 1.18 % ThO2 |
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Titanium 2.11 % Ti 3.51 % TiO2 |
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Manganese 0.23 % Mn 0.33 % Mn2O3 |
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Niobium 7.47 % Nb 10.69 % Nb2O5 |
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Aluminum 0.20 % Al 0.38 % Al2O3 |
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Iron 1.37 % Fe 1.95 % Fe2O3 |
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Silicon 13.66 % Si 29.21 % SiO2 |
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Hydrogen 0.48 % H 4.30 % H2O |
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Neodymium 1.05 % Nd 1.23 % Nd2O3 |
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Oxygen 31.20 % O |
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Fluorine 0.52 % F 0.52 % F |
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- %
F -0.22 % -O=F2 |
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______ ______ |
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100.00 % 100.31 % = TOTAL OXIDE |
| Empirical Formula: |
Ba6.83K3.54Na7.02Sr0.03Ce2.04La0.81Nd0.315(Pr0.13)Th0.19Fe3+1.04Mn3+0.18Nb3.42Ti1.87
Si20.68Al0.32O62.64(OH)20.29F1.17 |
| Environment: |
Analcime-ussingite pegmatite. |
| IMA Status: |
Approved IMA 1968 |
| Locality: |
Ilimaussaq alkaline complex, South Greenland. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Ilimaussite-(Ce) + Pronunciation  |
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