Mineralogy Database

Ferri-ottoliniite Mineral Data

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General Ferri-ottoliniite Information

Help on Chemical Formula: Chemical Formula: [ ](Na,Li)(Mg3Fe+++2)Si8O22(OH)2
Help on Composition: Composition: Molecular Weight = 865.55 gm
   Potassium   0.32 %  K     0.38 % K2O
   Sodium      2.87 %  Na    3.87 % Na2O
   Lithium     1.32 %  Li    2.85 % Li2O
   Calcium     0.28 %  Ca    0.39 % CaO
   Magnesium   3.79 %  Mg    6.29 % MgO
   Titanium    0.33 %  Ti    0.55 % TiO2
   Manganese   0.83 %  Mn    1.07 % MnO
   Aluminum    0.31 %  Al    0.59 % Al2O3
   Zinc        2.34 %  Zn    2.92 % ZnO
   Iron       16.97 %  Fe    7.64 % FeO / 15.77 % Fe2O3
   Silicon    25.96 %  Si   55.53 % SiO2
   Hydrogen    0.18 %  H     1.58 % H2O
   Oxygen     43.48 %  O
   Fluorine    1.03 %  F     1.03 % F
                -   %   F    -0.43 % -O=F2    
             ______        ______ 
             100.00 %      100.02 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.38K0.07Li1.24Na0.7Ca0.06Fe2+0.92Mg1.35Mn2+0.13Zn0.31Fe3+1.71Al0.1Ti0.06Li0.41 Si8O22(OH)1.52F0.47
Help on Environment: Environment: Found as relict cores in other amphiboles in hydrothermal episyenitic bodies in the Pedridza massif. (amphibole group; structure)
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: East sector of the Pedriza Massif, Sierra de Guadarrama, Spanish Central System, Spain. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Luisa Ottolini (b. 1954), of CNR - Istituto di Geoscienze e Georisorse, Pavia, Italy, for her fundamental contributions to the advancement of ion-probe analysis of rock-fo rming minerals.
Help on Synonym: Synonym: IMA2001-067
  IMA2001-067a