AM_Pyroxmangite_4
Formula: Mn6.405 Fe.015 Mg.58 Si7 O21
Name: Pyroxmangite
Unit cell: 9.663 10.457 17.36 112.28 103.13 82.88 , V=1579.37
Space group: C-1 (2)

Zanazzi P F , Nestola F , Nazzareni S , Comodi P , American Mineralogist , 93 (2008) p.1921-1928, Pyroxmangite: A high pressure single-crystal study, Locality: Yokone-Yama, Awano Town, Tochigi Prefecture, Japan, Note: Pressure = 0.0001 GPa