Mineralogy Database

Tsepinite-Ca Mineral Data

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General Tsepinite-Ca Information

Help on Chemical  Formula: Chemical Formula: (Ca,K,Na,[ ])2(Ti,Nb)2(Si4O12)(OH,O)2•4(H2O)
Help on Composition: Composition: Molecular Weight = 1,200.24 gm
   Potassium   1.82 %  K     2.20 % K2O
   Barium      3.09 %  Ba    3.45 % BaO
   Sodium      0.98 %  Na    1.32 % Na2O
   Strontium   2.56 %  Sr    3.02 % SrO
   Calcium     3.74 %  Ca    5.23 % CaO
   Titanium   13.04 %  Ti   21.76 % TiO2
   Niobium     6.27 %  Nb    8.97 % Nb2O5
   Silicon    19.05 %  Si   40.75 % SiO2
   Hydrogen    1.48 %  H    13.20 % H2O
   Oxygen     47.98 %  O
             ______        ______ 
             100.00 %       99.90 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.12K0.56Na0.51Sr0.35Ba0.27Ti3.27Nb0.81Si8.14O24.42(OH)2.45O1.55�7.57(H2O)
Help on Environment: Environment: In the hydrothermally altered zone of a large aegirine-nepheline-K-spar pegmatite. Labuntsovite group; structure determined.
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Lovchorrite mine, Hackman Valley, Yukspor Mountian, Khibina massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Ca-dominant analogue of tsepinite-Na.
Help on Synonym: Synonym: IMA2002-020