AM_Arrojadite-(BaFe) Formula: Al.5 Ca.94 Sr.25 Na2.63 Ba.38 K.06 Pb.03 Fe6.02 Mg4.36 P12 O50 Name: Arrojadite-(BaFe) Unit cell: 16.406 9.945 24.47 90.0 105.73 90.0 , V=3842.95 Space group: C12/C1 (15)

Demartin F , Gramaccioli C M , Pilati T , Sciesa E , The Canadian Mineralogist , 34 (1996) p.827-834, Sigismundite, (Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(OH)2(PO4)12, a new, Ba-rich member of the arrojadite group from Spluga Valley, Italy, Locality: Spluga Valley, Italy