Mineralogy Database

Manganokhomyakovite Mineral Data

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General Manganokhomyakovite Information

Help on Chemical  Formula: Chemical Formula: Na12Sr3Ca6Mn3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2
Help on Composition: Composition: Molecular Weight = 3,346.83 gm
   Sodium      8.24 %  Na   11.11 % Na2O
   Strontium   7.85 %  Sr    9.29 % SrO
   Calcium     7.18 %  Ca   10.05 % CaO
   Zirconium   8.18 %  Zr   11.05 % ZrO2
   Manganese   4.92 %  Mn    6.36 % MnO
   Silicon    20.98 %  Si   44.88 % SiO2
   Hydrogen    0.07 %  H     0.61 % H2O
   Tungsten    5.49 %  W     6.93 % WO3
   Chlorine    0.53 %  Cl    0.53 % Cl
                -   %   Cl   -0.12 % -O=Cl2   
   Oxygen     36.55 %  O
             ______        ______ 
             100.00 %      100.68 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na12Sr3Ca6Mn2+3Zr3WSi25O74.2(OH)2.25Cl0.5
Help on Environment: Environment: Found in a miarolitic cavity in nepheline syenite. Forms a solid solution with khomyakovite. A member of the Eudialyte group.
Help on IMA Status: IMA Status: Approved IMA 1998 (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: The name reflects the composition and similarity to khomyakovite.
Help on Synonym: Synonym: IMA1998-043