Mineralogy Database

Ferrokentbrooksite Mineral Data

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General Ferrokentbrooksite Information

Help on Chemical  Formula: Chemical Formula: Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3(Cl,F,OH)2
Help on Composition: Composition: Molecular Weight = 3,231.96 gm
   Potassium         0.39 %  K     0.47 % K2O
   Sodium            9.28 %  Na   12.51 % Na2O
   Strontium         0.41 %  Sr    0.48 % SrO
   Calcium           5.98 %  Ca    8.36 % CaO
   La,Ce,Pr,Nd,Sm,   4.41 %  RE    5.15 % REE2O3
   Yttrium           0.47 %  Y     0.59 % Y2O3
   Hafnium           0.17 %  Hf    0.20 % HfO2
   Zirconium         8.67 %  Zr   11.70 % ZrO2
   Tantalum          0.11 %  Ta    0.14 % Ta2O5
   Titanium          0.06 %  Ti    0.10 % TiO2
   Manganese         3.14 %  Mn    4.06 % MnO
   Niobium           1.84 %  Nb    2.63 % Nb2O5
   Aluminum          0.06 %  Al    0.11 % Al2O3
   Iron              4.13 %  Fe    5.31 % FeO
   Silicon          21.86 %  Si   46.77 % SiO2
   Hydrogen          0.04 %  H     0.33 % H2O
   Chlorine          0.98 %  Cl    0.98 % Cl
                      -   %   Cl   -0.22 % -O=Cl2   
   Oxygen           37.13 %  O
   Fluorine          0.89 %  F     0.89 % F
                      -   %   F    -0.37 % -O=F2    
                   ______        ______ 
                   100.00 %      100.19 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na13.05REE0.99K0.32Ca0.23Sr0.15Ca4.59Mn2+1.24Y0.17Fe2+2.39Mn2+0.61Zr3Ti0.04Hf0.03 Nb0.64Si0.23Zr0.07Ta0.02Si24.93Al0.07(OH)0.4
Help on Environment: Environment: Primary late-stage phase in a small pegmatite dike in nepheline syenite.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Poudrette Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Fe-analogue of kentbrooksite.
Help on Synonym: Synonym: IMA1999-046