AM_Ekatite Formula: Fe5.07 Zn.9 As2.268 Si.246 O15.246 H9.492 Name: Ekatite Unit cell: 12.773 12.773 5.051 90.0 90.0 120.0 , V=713.66 Space group: P63MC (186)

Keller P , European Journal of Mineralogy , 13 (2001) p.769-777, Ekatite, (Fe3+,Fe2+,Zn)12(OH)6[AsO3]6[AsO3,HOSiO3]2, a new mineral, from Tsumeb, Namibia, and its crystal structure, Locality: Tsumeb, Namibia