AM_Bismutite
Formula: Bi2 C O5
Name: Bismutite
Unit cell: 3.865 3.862 13.675 90.0 90.0 90.0 , V=204.12
Space group: IMM2 (44)

Grice J D , The Canadian Mineralogist , 40 (2002) p.693-698, A solution to the crystal structures of bismutite and beyerite