Mineralogy Database

Permanganogrunerite Mineral Data

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General Permanganogrunerite Information

Help on Chemical  Formula: Chemical Formula: [ ]Mn4(Fe++)3(Si8O22)(OH)2
Help on Composition: Composition: Molecular Weight = 997.98 gm
   Manganese  22.02 %  Mn   28.43 % MnO
   Iron       16.79 %  Fe   21.60 % FeO
   Silicon    22.51 %  Si   48.16 % SiO2
   Hydrogen    0.20 %  H     1.81 % H2O
   Oxygen     38.48 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+4Fe2+3Si8O22(OH)2
Help on IMA Status: IMA Status: Proposed IMA 1997 (Dana # Added)
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as per current IMA amphibole nomenclature (Burke and Leake 2004; Can. Mineral., 42, 1881-1883). Dashkensanite (1936) was revalidated and renamed 2005.
Help on Name Pronunciation: Name Pronunciation: Permanganogrunerite + Pronunciation Say PERMANGANOGRUNERITE