Mineralogy Database

Almarudite Mineral Data

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General Almarudite Information

Help on Chemical Formula: Chemical Formula: K([ ],Na)2(Mn,Fe,Mg)2(Be,Al)3[Si12O30]
Help on Composition: Composition: Molecular Weight = 1,000.32 gm
   Potassium   3.36 %  K     4.05 % K2O
   Sodium      0.48 %  Na    0.65 % Na2O
   Calcium     0.08 %  Ca    0.11 % CaO
   Magnesium   0.92 %  Mg    1.53 % MgO
   Manganese   5.66 %  Mn    7.30 % MnO
   Beryllium   1.86 %  Be    5.18 % BeO
   Aluminum    2.16 %  Al    4.08 % Al2O3
   Zinc        0.20 %  Zn    0.24 % ZnO
   Iron        3.46 %  Fe    4.45 % FeO
   Silicon    33.83 %  Si   72.38 % SiO2
   Oxygen     47.98 %  O
             ______        ______ 
             100.00 %       99.98 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.86Na0.21Mn2+1.03Fe2+0.62Mg0.38Zn0.03Ca0.02Be2.07Al0.8Si12.05O30
Help on Environment: Environment: In xenoliths in leucite tephrite lava. Milarite group; structure determined.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: A quarry at the Bellerberg volcano lava field, near Ettringen, 2 km north of Mayen, Laacher See region, eastern Eifel area, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: After the authors� hosting and supporting institution, "Universit�t Wien", and is derived from the university�s proper name "ALma MAter RUDolphina".
Help on Synonym: Synonym: IMA2002-048