AM_Pigeonite_36
Formula: Mg.918 Fe.849 Ca.191 Mn.029 Na.003 Ti.01 Si1.984 Al.016 O6
Name: Pigeonite
Unit cell: 9.7079 8.9442 5.2463 90.0 108.485 90.0 , V=432.03
Space group: P121/C1 (14)

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