AM_Gillespite_2
Formula: Ba Fe Si4 O10
Name: Gillespite
Unit cell: 7.349 7.515 7.894 90.0 90.0 90.0 , V=435.97
Space group: P21212 (18)

Hazen R M , Burnham C W , American Mineralogist , 59 (1974) p.1166-1176, The crystal structures of gillespite I and II: A structure determination at, high pressure, P = 26 kbar, known as gillespite II