Mineralogy Database

Brokenhillite Mineral Data

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General Brokenhillite Information

Help on Chemical Formula: Chemical Formula: (Mn,Fe)32[Si24O60]OH29Cl11
Help on Composition: Composition: Molecular Weight = 4,282.50 gm
   Manganese  30.79 %  Mn   39.75 % MnO
   Iron       10.43 %  Fe   13.42 % FeO
   Silicon    15.74 %  Si   33.67 % SiO2
   Hydrogen    0.68 %  H     6.10 % H2O
   Chlorine    9.11 %  Cl    9.11 % Cl
                -   %   Cl   -2.05 % -O=Cl2   
   Oxygen     33.25 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+24Fe2+8Si24O60(OH)29Cl11
Help on Environment: Environment: Discredited as being manganpyrosmalite which has priority.
Help on IMA Status: IMA Status: Not Approved IMA
Help on Locality: Locality: Broken Hill, New South Wales, Australia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.