AM_Yazganite Formula: Na Fe2 (Mg.656 Mn.344) As3 O13 H4 Name: Yazganite Unit cell: 12.181 12.807 6.6391 90.0 112.441 90.0 , V=957.28 Space group: C12/C1 (15)

Sarp H , Cerny R , European Journal of Mineralogy , 17 (2005) p.367-373, Yazganite, NaFe3+2(Mg,Mn)(AsO4)3*H2O, a new mineral:, its description and crystal structure, Note: variant of the johillerite structure, alluaudite group, Sample: Volcanic complex of Erciyes, 10 km south of the prefecture of Kayseri,, near Hisarcik, village Kiranardi, Turkey