Mineralogy Database

Orthochevkinite Mineral Data

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General Orthochevkinite Information

Help on Chemical  Formula: Chemical Formula: (Ce,La,Ca,Na,Th)4(Fe++,Mg)2(Ti,Fe+++)3Si4O22
Help on Composition: Composition: Molecular Weight = 1,170.75 gm
   Sodium      0.79 %  Na    1.06 % Na2O
   Calcium     2.05 %  Ca    2.87 % CaO
   Lanthanum  14.24 %  La   16.70 % La2O3
   Cerium     14.36 %  Ce   16.82 % Ce2O3
   Thorium     7.93 %  Th    9.02 % ThO2
   Magnesium   1.04 %  Mg    1.72 % MgO
   Titanium    9.20 %  Ti   15.35 % TiO2
   Iron       10.73 %  Fe    9.21 % FeO /  5.12 % Fe2O3
   Silicon     9.60 %  Si   20.53 % SiO2
   Oxygen     30.07 %  O
             ______        ______ 
             100.00 %       98.39 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ce1.2La1.2Ca0.6Na0.4Th0.4Fe2+1.5Mg0.5Ti2.25Fe3+0.75Si4O22
Help on Environment: Environment: Alkaline syenite pegmatites. An incompletely characterized material. Physical properties by analogy with chevkinite.
Help on IMA Status: IMA Status: Not Approved IMA 1920
Help on Locality: Locality: Ifazina-Itorendrika Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as a possible orthorhombic form of chevkinite.