AM_Pigeonite_23 Formula: Mg.916 Fe.851 Ca.191 Mn.029 Na.003 Ti.01 Si1.984 Al.016 O6 Name: Pigeonite Unit cell: 9.7088 8.9429 5.2473 90.0 108.471 90.0 , V=432.13 Space group: P121/C1 (14)

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