AM_Digenite
Formula:
Cu17 S9
Name:
Digenite
Unit cell:
16.16 16.16 16.16 13.93 13.93 13.93 , V=212.85
Space group:
R-3M (166)
Donnay G , Donnay J D H , Kullerud G , American Mineralogist , 43 (1958) p.228-242, Crystal and twin structure of digenite, Cu9S5