AM_Fencooperite
Formula:
Ba6 Fe3 Si8 C2 O31.38 (Cl1.62 H1.38)
Name:
Fencooperite
Unit cell:
10.7409 10.7409 7.0955 90.0 90.0 120.0 , V=708.92
Space group:
P3M1 (156)
Grice J D , The Canadian Mineralogist , 39 (2001) p.1065-1071, The crystal structure of fencooperite: Unique [Fe3O13] pinwheels, cross-connected by [Si8O22] islands