Mineralogy Database

Ferric-ferronyboite Mineral Data

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General Ferric-ferronyboite Information

Help on Chemical Formula: Chemical Formula: NaNa2(Fe++)3(Fe+++)2(Si7Al)O22(OH)2
Help on Composition: Composition: Molecular Weight = 957.79 gm
   Sodium     7.20 %  Na    9.71 % Na2O
   Aluminum   2.82 %  Al    5.32 % Al2O3
   Iron      29.15 %  Fe   22.50 % FeO / 16.67 % Fe2O3
   Silicon   20.53 %  Si   43.91 % SiO2
   Hydrogen   0.21 %  H     1.88 % H2O
   Oxygen    40.09 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3Fe2+3Fe3+2(Si7AlO22)(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.