Mineralogy Database

Armbrusterite Mineral Data

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General Armbrusterite Information

Help on Chemical Formula: Chemical Formula: K5Na6Mn+++Mn++14[Si9O22]4(OH)10•4H2O
Help on Composition: Composition: Molecular Weight = 3,806.38 gm
   Potassium   5.17 %  K     6.22 % K2O
   Sodium      3.96 %  Na    5.33 % Na2O
   Calcium     0.19 %  Ca    0.27 % CaO
   Magnesium   0.11 %  Mg    0.19 % MgO
   Titanium    0.03 %  Ti    0.04 % TiO2
   Manganese  20.02 %  Mn   23.97 % MnO /  2.09 % Mn2O3
   Aluminum    0.02 %  Al    0.04 % Al2O3
   Zinc        0.15 %  Zn    0.19 % ZnO
   Iron        0.51 %  Fe    0.66 % FeO
   Silicon    26.56 %  Si   56.83 % SiO2
   Hydrogen    0.47 %  H     4.16 % H2O
   Oxygen     42.81 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K5.03Na6.55Mn2+12.86Mn3+1.01Fe2+0.35Mg0.18Ca0.18Zn0.09Al0.03Ti0.02Si36O88(OH)10.1�3.75(H2O)
Help on Environment: Environment: Modulated manganese phyllosilicate
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Mt. Kukisvumchorr, Kola Peninsula, Russia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Thomas Armbruster (b. 1950; University of Berne) for his outstanding contribution to structural mineralogy and crystallography, especially to the study of Mn-rich minerals .
Help on Synonym: Synonym: IMA2005-035