Mineralogy Database

Tsepinite-Sr Mineral Data

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General Tsepinite-Sr Information

Help on Chemical  Formula: Chemical Formula: (Sr,Ba,K)(Ti,Nb)2(Si4O12)(OH,O)2•3(H2O)
Help on Composition: Composition: Molecular Weight = 572.95 gm
   Potassium   1.09 %  K     1.32 % K2O
   Barium      3.83 %  Ba    4.28 % BaO
   Sodium      0.44 %  Na    0.59 % Na2O
   Strontium   4.28 %  Sr    5.06 % SrO
   Calcium     0.63 %  Ca    0.88 % CaO
   Titanium   11.03 %  Ti   18.40 % TiO2
   Niobium    11.19 %  Nb   16.01 % Nb2O5
   Aluminum    0.09 %  Al    0.18 % Al2O3
   Zinc        0.23 %  Zn    0.28 % ZnO
   Iron        0.10 %  Fe    0.13 % FeO
   Silicon    19.51 %  Si   41.74 % SiO2
   Hydrogen    1.24 %  H    11.12 % H2O
   Oxygen     46.33 %  O
             ______        ______ 
             100.00 %       99.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Sr0.28Ba0.16K0.16Na0.11Ca0.09Zn0.02Ti1.32Nb0.69Fe2+0.01Si3.98Al0.02O12(OH)1.89O0.11�2.59(H2O)
Help on Environment: Environment: Found in hydrothermal paragenesis in cavities of nepheline-syenite pegmatite. Labuntsovite group (the vuoriyarvite subgroup)
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Eveslogchorr Mountain, Khibiny massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Sr analog of tsepinite--Na, -K, and -Ca.
Help on Synonym: Synonym: IMA2004-008