Mineralogy Database

Bobtraillite Mineral Data

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General Bobtraillite Information

Help on Chemical  Formula: Chemical Formula: (Na,Ca)13Sr11(Zr,Y,Nb)14Si42B6O132(OH)12•12H2O
Help on Composition: Composition: Molecular Weight = 6,318.09 gm
   Barium      0.35 %  Ba    0.39 % BaO
   Sodium      4.08 %  Na    5.49 % Na2O
   Strontium  14.69 %  Sr   17.37 % SrO
   Calcium     0.77 %  Ca    1.08 % CaO
   Yttrium     0.89 %  Y     1.13 % Y2O3
   Hafnium     0.40 %  Hf    0.47 % HfO2
   Zirconium  18.32 %  Zr   24.75 % ZrO2
   Niobium     0.90 %  Nb    1.28 % Nb2O5
   Silicon    18.51 %  Si   39.60 % SiO2
   Boron       1.03 %  B     3.31 % B2O3
   Hydrogen    0.57 %  H     5.13 % H2O
   Oxygen     39.50 %  O
             ______        ______ 
             100.00 %       99.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na11.2Ca1.22Sr10.59Ba0.16Zr12.69Y0.63Nb0.61Hf0.14Si41.64B6O132(OH)12�12(H2O)
Help on Environment: Environment: Found in igneous breccias and nepheline syenite pegmatites.
Help on IMA Status: IMA Status: Approved IMA 2001 (Dana # Added)
Help on Locality: Locality: Poudrette quarry, Mont Saint-Hilaire Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Robert (Bob) James Traill (1921-), mineralogist, former head of the mineralogy section of the Geological Survey of Canada (1953-1986), and for his contributions to mineral ogy.
Help on Synonym: Synonym: IMA2001-041