Mineralogy Database

Magnesioriebeckite Mineral Data

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General Magnesioriebeckite Information

Help on Chemical Formula: Chemical Formula: [ ]Na2[(Mg,Fe++)3Fe+++2]Si8O22(OH)2
Help on Composition: Composition: Molecular Weight = 876.08 gm
   Potassium   0.13 %  K     0.16 % K2O
   Sodium      4.09 %  Na    5.52 % Na2O
   Calcium     1.97 %  Ca    2.75 % CaO
   Magnesium   5.35 %  Mg    8.88 % MgO
   Titanium    0.16 %  Ti    0.27 % TiO2
   Manganese   0.31 %  Mn    0.45 % Mn2O3
   Aluminum    0.80 %  Al    1.51 % Al2O3
   Iron       17.47 %  Fe   12.06 % FeO / 11.57 % Fe2O3
   Silicon    25.65 %  Si   54.87 % SiO2
   Hydrogen    0.23 %  H     2.06 % H2O
   Oxygen     43.83 %  O
             ______        ______ 
             100.00 %      100.10 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na1.56Ca0.43K0.03Mg1.93Fe2+1.47Fe3+1.27Al0.26Mn3+0.05Ti0.03(Si8O22)(OH)2
Help on Environment: Environment: Sodium-rich igneous and metamorphic rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1957
Help on Locality: Locality: Socotra island, Indian Ocean, Yemen. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition and relatinship to riebeckite.