AM_Pigeonite_37 Formula: Mg.916 Fe.851 Ca.191 Mn.029 Na.003 Ti.01 Si1.984 Al.016 O6 Name: Pigeonite Unit cell: 9.7071 8.9425 5.2463 90.0 108.484 90.0 , V=431.92 Space group: P121/C1 (14)

Domeneghetti M C , Zema M , Tazzoli V , American Mineralogist , 90 (2005) p.1816-1823