Mineralogy Database

Ferroferribarroisite Mineral Data

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General Ferroferribarroisite Information

Help on Chemical  Formula: Chemical Formula: CaNa(Fe++,Mg)3Fe+++2[AlSi7O22](OH)2
Help on Composition: Composition: Molecular Weight = 928.23 gm
   Sodium      2.48 %  Na    3.34 % Na2O
   Calcium     4.32 %  Ca    6.04 % CaO
   Magnesium   1.96 %  Mg    3.26 % MgO
   Aluminum    2.91 %  Al    5.49 % Al2O3
   Iron       25.57 %  Fe   17.42 % FeO / 17.20 % Fe2O3
   Silicon    21.18 %  Si   45.31 % SiO2
   Hydrogen    0.22 %  H     1.94 % H2O
   Oxygen     41.37 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaNaFe2+2.25Mg0.75Fe3+2(Si7AlO22)(OH)2
Help on IMA Status: IMA Status: Not Approved IMA
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).