Mineralogy Database

Ilimaussite-(Ce) Mineral Data

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General Ilimaussite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: (Ba,Na)10K3Na4.5Ce5(Nb,Ti)6[Si12O36][Si9O18(O,OH)24]O6
Help on Composition: Composition: Molecular Weight = 4,253.30 gm
   Potassium       3.25 %  K     3.92 % K2O
   Barium         22.05 %  Ba   24.62 % BaO
   Sodium          3.79 %  Na    5.11 % Na2O
   Strontium       0.06 %  Sr    0.07 % SrO
   Lanthanum       2.65 %  La    3.10 % La2O3
   Cerium          6.72 %  Ce    7.87 % Ce2O3
   Praeseodymium   2.15 %  Pr    2.52 % Pr2O3
   Thorium         1.04 %  Th    1.18 % ThO2
   Titanium        2.11 %  Ti    3.51 % TiO2
   Manganese       0.23 %  Mn    0.33 % Mn2O3
   Niobium         7.47 %  Nb   10.69 % Nb2O5
   Aluminum        0.20 %  Al    0.38 % Al2O3
   Iron            1.37 %  Fe    1.95 % Fe2O3
   Silicon        13.66 %  Si   29.21 % SiO2
   Hydrogen        0.48 %  H     4.30 % H2O
   Neodymium       1.05 %  Nd    1.23 % Nd2O3
   Oxygen         31.20 %  O
   Fluorine        0.52 %  F     0.52 % F
                    -   %   F    -0.22 % -O=F2    
                 ______        ______ 
                 100.00 %      100.31 % = TOTAL OXIDE
Help on Empirical Formula: 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
Help on Environment: Environment: Analcime-ussingite pegmatite.
Help on IMA Status: IMA Status: Approved IMA 1968
Help on Locality: Locality: Ilimaussaq alkaline complex, South Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Ilimaussite-(Ce) + Pronunciation Say ILIMAUSSITE-(CE)