AM_Johillerite_1 Formula: Na (Mg2.649 Zn.351) Cu As3 O12 Name: Johillerite Unit cell: 11.87 12.755 6.77 90.0 113.42 90.0 , V=940.55 Space group: C12/C1 (15)

Keller P , Hess H , Neues Jahrbuch fur Mineralogie, Monatshefte , 1988 (1988) p.395-404, Die kristallstrukturen von o danielit, Na(Zn,Mg)3H2(AsO4)3,, und johillerit, Na(Mg,Zn)3Cu(AsO4)3, Locality: Tsumeb, Namibia