Mineralogy Database

Gatelite-(Ce) Mineral Data

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General Gatelite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: (Ca,Ce,La,Nd)4(Al,Mg,Fe)4[Si2O7][SiO4]3(O,F,OH)3
Help on Composition: Composition: Molecular Weight = 1,067.70 gm
   Calcium         4.13 %  Ca    5.78 % CaO
   Lanthanum       6.50 %  La    7.63 % La2O3
   Cerium         18.37 %  Ce   21.52 % Ce2O3
   Praeseodymium   1.32 %  Pr    1.54 % Pr2O3
   Samarium        1.41 %  Sm    1.63 % Sm2O3
   Magnesium       1.14 %  Mg    1.89 % MgO
   Aluminum        7.83 %  Al   14.80 % Al2O3
   Iron            1.57 %  Fe    2.02 % FeO
   Silicon        13.42 %  Si   28.70 % SiO2
   Hydrogen        0.15 %  H     1.35 % H2O
   Neodymium      10.81 %  Nd   12.61 % Nd2O3
   Oxygen         32.82 %  O
   Fluorine        0.53 %  F     0.53 % F
                    -   %   F    -0.22 % -O=F2    
                 ______        ______ 
                 100.00 %       99.78 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.1Ce1.4La0.5Nd0.8Pr0.1Sm0.1Al3.1Mg0.5Fe2+0.3Si5.1O20.3(OH)1.6F0.3
Help on Environment: Environment: Found as a late-stage mineral in the dolomitic levels of the Trimmouns Talc deposit intergrown with tornebohmite-(Ce). (related to epidote; structure)
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Trimouns talc deposit, Luzenac, Ariege, French Pyrenees, France. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Pierre Gatel, French mineral collector and founder of the Association Francaise de Micromineralogie.
Help on Synonym: Synonym: IMA2001-050