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	 Crichtonite Mineral Data  |  |  | 
   
| General Crichtonite  Information  | 
|  Chemical  Formula: | (Sr,La,Ce,Y)(Ti,Fe+++,Mn)21O38 | 
|  Composition: | Molecular Weight = 1,772.61 gm | 
|  | Strontium   3.46 %  Sr    4.09 % SrO | 
|  | Lanthanum   1.57 %  La    1.84 % La2O3 | 
|  | Cerium      0.79 %  Ce    0.93 % Ce2O3 | 
|  | Yttrium     0.50 %  Y     0.64 % Y2O3 | 
|  | Titanium   38.09 %  Ti   63.54 % TiO2 | 
|  | Manganese   2.17 %  Mn    3.12 % Mn2O3 | 
|  | Iron       17.96 %  Fe   12.56 % FeO / 11.71 % Fe2O3 | 
|  | Lead        1.17 %  Pb    1.26 % PbO | 
|  | Oxygen     34.30 %  O | 
|  | ______        ______ | 
|  | 100.00 %       99.68 % = TOTAL OXIDE | 
|  Empirical Formula: | Sr0.7La0.2Ce0.1Y0.1Pb0.1Ti14.1Fe2+3.1Fe3+2.6Mn3+0.7O38 | 
|  Environment: | In alpine-type fissure veins. | 
|  IMA Status: | Valid Species (Pre-IMA) 1813 | 
|  Locality: | St. Christopher, Bourg d'Oisans, Isere, France. Link to MinDat.org Location Data. | 
|  Name Origin: | Named for Sir Alexander A. Crichton (1763-1856), Scottish physician and mineral collector. | 
|  Synonym: | ICSD 12122 | 
|  | PDF 22-1121 | 
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