Mineralogy Database

Sosedkoite Mineral Data

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General Sosedkoite Information

Help on Chemical Formula: Chemical Formula: (K,Na)5Al2(Ta,Nb)22O60
Help on Composition: Composition: Molecular Weight = 5,030.82 gm
   Potassium   2.41 %  K     2.90 % K2O
   Sodium      0.87 %  Na    1.17 % Na2O
   Calcium     0.08 %  Ca    0.11 % CaO
   Tantalum   74.45 %  Ta   90.91 % Ta2O5
   Niobium     1.85 %  Nb    2.64 % Nb2O5
   Aluminum    1.02 %  Al    1.93 % Al2O3
   Antimony    0.24 %  Sb    0.29 % Sb2O3
   Oxygen     19.08 %  O
             ______        ______ 
             100.00 %       99.95 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K3.1Na1.9Ca0.1Al1.9Ta20.7NbSb0.1O60
Help on Environment: Environment: Granite pegmatites.
Help on IMA Status: IMA Status: Approved IMA 1982
Help on Locality: Locality: Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for A. F. Sosedko (1901-1957), Russian mineralogist.
Help on Name Pronunciation: Name Pronunciation: Sosedkoite + Pronunciation Say SOSEDKOITE