Mineralogy Database

Manganocummingtonite Mineral Data

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General Manganocummingtonite Information

Help on Chemical Formula: Chemical Formula: Na(Na,Mn)2(Mg4,Fe+++)5Si8O22(OH)2
Help on Composition: Composition: Molecular Weight = 848.70 gm
   Sodium      6.77 %  Na    9.13 % Na2O
   Magnesium  11.46 %  Mg   19.00 % MgO
   Manganese   3.24 %  Mn    4.18 % MnO
   Iron        6.58 %  Fe    9.41 % Fe2O3
   Silicon    26.47 %  Si   56.64 % SiO2
   Hydrogen    0.24 %  H     2.12 % H2O
   Oxygen     45.24 %  O
             ______        ______ 
             100.00 %      100.47 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaNa1.5Mn2+0.5Mg4Fe3+(Si8O22)(OH)2
Help on Environment: Environment: Forms a series with Manganogrunerite (Dannemorite).
Help on IMA Status: IMA Status: Renamed IMA 2003, Formerly Tirodite 1938
Help on Locality: Locality: Tirodi, Madhya Pradesh, India. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Renamed IMA 2003, Formerly Tirodite (1938). Named after its locality.
Help on Synonym: Synonym: Tirodite - Renamed