AM_Krupkaite_1 Formula: Bi3 Pb Cu.98 S6 Name: Krupkaite Unit cell: 4.0134 11.208 11.56 90.0 90.0 90.0 , V=519.99 Space group: PMC21 (26)

Topa D , Makovicky E , Balic-Zunic T , The Canadian Mineralogist , 40 (2002) p.1147-1159, The structural role of excess Cu and Pb in gladite and krupkaite, based on new refinements of their structure, Sample: bd47