AM_Buergerite
Formula:
Na B3 Fe3 Si6 Al6 F O30 H3
Name:
Buergerite
Unit cell:
15.869 15.869 7.188 90.0 90.0 120.0 , V=1567.61
Space group:
R3M (160)
Tippe A , Hamilton W C , American Mineralogist , 56 (1971) p.101-113, A neutron-diffraction study of the ferric tourmaline, buergerite