AM_Gillespite_7
Formula: Ba Fe Si4 O10
Name: Gillespite
Unit cell: 7.445 7.224 7.783 90.0 90.0 90.0 , V=418.59
Space group: P21212 (18)

Hazen R M , Finger L W , American Mineralogist , 68 (1983) p.595-603, High-pressure and high-temperature crystallographic study of the gillespite I-II, phase transition, P = 45 kbar