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	 Henritermierite Mineral Data  |  |  | 
   
| General Henritermierite  Information  | 
|  Chemical  Formula: | Ca3(Mn,Al)2(SiO4)2(OH)4 | 
|  Composition: | Molecular Weight = 468.33 gm | 
|  | Calcium    25.67 %  Ca   35.92 % CaO | 
|  | Manganese  17.60 %  Mn   25.28 % Mn2O3 | 
|  | Aluminum    2.88 %  Al    5.44 % Al2O3 | 
|  | Silicon    11.99 %  Si   25.66 % SiO2 | 
|  | Hydrogen    0.86 %  H     7.69 % H2O | 
|  | Oxygen     41.00 %  O | 
|  | ______        ______ | 
|  | 100.00 %      100.00 % = TOTAL OXIDE | 
|  Empirical Formula: | Ca3Mn3+1.5Al0.5(SiO4)2(OH)4 | 
|  Environment: | As small grains filling interstices between crystals of other minerals in a manganese ore deposit. | 
|  IMA Status: | Approved IMA 1969 | 
|  Locality: | Tachgagalt manganese mine, Anti-Atlas Mountains, Morocco. Link to MinDat.org Location Data. | 
|  Name Origin: | Named for Henri F.E. Termier (1897- ), Professor of Geology at the Sorbonne, Paris, France. | 
|  Name Pronunciation: | Henritermierite  + Pronunciation   | 
|  Synonym: | ICSD 51249 | 
|  | PDF 22-150 | 
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