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	 Eucryptite Mineral Data  |  |  | 
   
| General Eucryptite  Information  | 
|  Chemical  Formula: | LiAlSiO4 | 
|  Composition: | Molecular Weight = 126.01 gm | 
|  | Lithium    5.51 %  Li   11.86 % Li2O | 
|  | Aluminum  21.41 %  Al   40.46 % Al2O3 | 
|  | Silicon   22.29 %  Si   47.68 % SiO2 | 
|  | Oxygen    50.79 %  O | 
|  | ______        ______ | 
|  | 100.00 %      100.00 % = TOTAL OXIDE | 
|  Empirical Formula: | LiAlSiO4 | 
|  Environment: | In lithium-rich pegmatites. Secondary mineral derived from spodumene. | 
|  IMA Status: | Valid Species (Pre-IMA) 1880 | 
|  Locality: | Branchville, Faifield Co., Connecticut, USA. Link to MinDat.org Location Data. | 
|  Name Origin: | Named from the Greek for well and concealed, in reference to its occurrence as intimate intergrowths with albite. | 
|  Name Pronunciation: | Eucryptite  + Pronunciation   | 
|  Synonym: | ICSD 30982 | 
|  | PDF 14-667 | 
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