Mineralogy Database

Ferro-eckermannite Mineral Data

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General Ferro-eckermannite Information

Help on Chemical  Formula: Chemical Formula: NaNa2(Fe++4Al)Si8O22(OH)2
Help on Composition: Composition: Molecular Weight = 930.02 gm
   Sodium     7.42 %  Na   10.00 % Na2O
   Aluminum   2.90 %  Al    5.48 % Al2O3
   Iron      24.02 %  Fe   30.90 % FeO
   Silicon   24.16 %  Si   51.68 % SiO2
   Hydrogen   0.22 %  H     1.94 % H2O
   Oxygen    41.29 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3Fe2+4Al(Si8O22)(OH)2
Help on IMA Status: IMA Status: Approved IMA 1964
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).