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