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	 Eriochalcite Mineral Data  |  |  | 
   
| General Eriochalcite  Information  | 
|  Chemical  Formula: | CuCl2•2(H2O) | 
|  Composition: | Molecular Weight = 170.48 gm | 
|  | Copper    37.27 %  Cu   46.66 % CuO | 
|  | Hydrogen   2.36 %  H    21.13 % H2O | 
|  | Chlorine  41.59 %  Cl   41.59 % Cl | 
|  | -   %
  Cl   -9.38 % -O=Cl2 | 
|  | Oxygen    18.77 %  O | 
|  | ______        ______ | 
|  | 100.00 %      100.00 % = TOTAL OXIDE | 
|  Empirical Formula: | CuCl2•2(H2O) | 
|  IMA Status: | Valid Species (Pre-IMA) 1884 | 
|  Locality: | Monte Somma, Vesuvius, Naples Province, Campania, Italy Link to MinDat.org Location Data. | 
|  Name Origin: | From the Greek erion = "wool" and kalcos= "copper", in allusion to its form and to the chemical composition. | 
|  Name Pronunciation: | Eriochalcite  + Pronunciation   | 
|  Synonym: | ICSD 34239 | 
|  | PDF 33-451 | 
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