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	 Tsumcorite Mineral Data  |  |  | 
   
| General Tsumcorite  Information  | 
|  Chemical  Formula: | PbZnFe++(AsO4)2•(H2O) | 
|  Composition: | Molecular Weight = 624.29 gm | 
|  | Zinc      10.47 %  Zn   13.04 % ZnO | 
|  | Iron       8.95 %  Fe   11.51 % FeO | 
|  | Arsenic   24.00 %  As   36.82 % As2O5 | 
|  | Hydrogen   0.32 %  H     2.89 % H2O | 
|  | Lead      33.19 %  Pb   35.75 % PbO | 
|  | Oxygen    23.07 %  O | 
|  | ______        ______ | 
|  | 100.00 %      100.00 % = TOTAL OXIDE | 
|  Empirical Formula: | PbZnFe2+(AsO4)2•(H2O) | 
|  Environment: | In the oxidized zone associated with other lead arsenates and carbonates. Forms a series with helmutwinklerite and thometzekite. | 
|  IMA Status: | Approved IMA 1971 | 
|  Locality: | Tsumeb mine, Tsumeb, Namibia. Link to MinDat.org Location Data. | 
|  Name Origin: | Named for the TSUMeb CORporation. | 
|  Name Pronunciation: | Tsumcorite  + Pronunciation   | 
|  Synonym: | ICSD 34763 | 
|  | PDF 25-399 | 
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