Mineralogy Database

Cerite-(La) Mineral Data

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General Cerite-(La) Information

Help on Chemical  Formula: Chemical Formula: (La,Ce,Ca)9(Mg,Fe+++)(SiO4)6[SiO3(OH)](OH)3
Help on Composition: Composition: Molecular Weight = 1,825.93 gm
   Strontium       1.68 %  Sr    1.99 % SrO
   Calcium         3.69 %  Ca    5.16 % CaO
   Lanthanum      32.41 %  La   38.01 % La2O3
   Cerium         20.49 %  Ce   24.00 % Ce2O3
   Praeseodymium   0.54 %  Pr    0.63 % Pr2O3
   Samarium        0.08 %  Sm    0.10 % Sm2O3
   Gadolinium      0.17 %  Gd    0.20 % Gd2O3
   Magnesium       0.31 %  Mg    0.51 % MgO
   Iron            0.98 %  Fe    1.26 % FeO
   Silicon         9.78 %  Si   20.93 % SiO2
   Phosphorus      1.09 %  P     2.49 % P2O5
   Hydrogen        0.36 %  H     3.24 % H2O
   Neodymium       1.26 %  Nd    1.47 % Nd2O3
   Oxygen         27.16 %  O
                 ______        ______ 
                 100.00 %       99.97 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: La4.26Ce2.67Ca1.38Sr0.35Nd0.16Pr0.07Gd0.02Sm0.01Fe2+0.32Ca0.3Mg0.23(SiO4)34(Si0.84) 4(P0.16)4(O3.11)4(OH)(OH)2.56
Help on Environment: Environment: Late-stage, low-temperature, secondary phase in a zoned aegirine-natrolite vein that cuts foyaite.
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Mt. Yuksporr, Khibina massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the La dominant analog of cerite-(Ce).
Help on Synonym: Synonym: IMA2001-042