AM_Rhodonite_2 Formula: Mn3.275 Fe.209 Ca1.001 Zn.41 Mg.13 Si5 O15 Name: Rhodonite Unit cell: 9.7718 10.5084 12.2256 108.606 103.017 82.482 , V=1156.84 Space group: C-1 (2)

Nelson W R , Griffen D T , American Mineralogist , 90 (2005) p.969-983, Crystal chemistry of Zn-rich rhodonite ( fowlerite ), Sample: 15-4024, Note: this is a plausible typical cation distribution for fowlerite