Elliot P , Brugger J , Caradoc-Davies T , Mineralogical Magazine , 74 (2010) p.39-53, Description and crystal structure of a new mineral, edwardsite,, Cu3Cd2(SO4)2(OH)6·4H2O, from Broken Hill, New South Wales, Australia, Locality: Block 14 Opencut, Broken Hill, New South Wales, Australia