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	 Krupkaite Mineral Data  |  |  | 
   
| General Krupkaite  Information  | 
|  Chemical  Formula: | PbCuBi3S6 | 
|  Composition: | Molecular Weight = 1,090.08 gm | 
|  | Copper    5.83 %  Cu | 
|  | Bismuth  57.51 %  Bi | 
|  | Lead     19.01 %  Pb | 
|  | Sulfur   17.65 %  S | 
|  | ______ | 
|  | 100.00 % | 
|  Empirical Formula: | PbCuBi3S6 | 
|  Environment: | In a vein between gneiss and an orthoclase pegmatite intergrown with bismuthinite. | 
|  IMA Status: | Approved IMA 1974 | 
|  Locality: | Krupka, Srredocesky kraj, Czech Republic. Link to MinDat.org Location Data. | 
|  Name Origin: | Named for the locality. | 
|  Name Pronunciation: | Krupkaite  + Pronunciation   | 
|  Synonym: | ICSD 30776 | 
|  | PDF 30-490 | 
|  |