AM_Johillerite
Formula: Cu1.6 Na.77 Pb.01 Ca.01 K.03 Mg2.09 Fe.25 Al.06 As3 O12
Name: Johillerite
Unit cell: 6.752 12.739 11.068 90.0 100.37 90.0 , V=936.45
Space group: I12/A1 (15)

Tait K T , Hawthorne F C , The Canadian Mineralogist , 42 (2004) p.717-722, Johillerite from Tolbachik, Kamchatka Peninsula, Russia: Crystal-structure, refinement and chemical composition, Locality: Tolbachik, Kamchatka Peninsula, Russia