Mineralogy Database

Seidite-(Ce) Mineral Data

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General Seidite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: Na4(Ce,Sr)2{Ti(OH)2(Si8O18)}(O,OH,F)4•5(H2O)
Help on Composition: Composition: Molecular Weight = 1,096.99 gm
   Sodium      8.38 %  Na   11.30 % Na2O
   Strontium   3.99 %  Sr    4.72 % SrO
   Cerium     19.16 %  Ce   22.44 % Ce2O3
   Titanium    4.36 %  Ti    7.28 % TiO2
   Silicon    20.48 %  Si   43.82 % SiO2
   Hydrogen    1.21 %  H    10.84 % H2O
   Oxygen     41.71 %  O
   Fluorine    0.69 %  F     0.69 % F
                -   %   F    -0.29 % -O=F2    
             ______        ______ 
             100.00 %      100.80 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na4Ce1.5Sr0.5Ti(OH)2Si8O18O2.4(OH)1.2F0.4�5(H2O)
Help on Environment: Environment: In cavernous natrolite in the Jubileinaya hyperagpaitic pegmatites. Na cations are exchangable indicating a micro-porous structure.
Help on IMA Status: IMA Status: Approved IMA 1997 (Dana # Added)
Help on Locality: Locality: Found at Mount Karnasurt, Lovozero alkaline complex, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Seidozero, literally Lake Seid, the central lake in the Lovozero complex.
Help on Synonym: Synonym: IMA1993-029