AM_Beyerite Formula: Bi2 Ca C2 O8 Name: Beyerite Unit cell: 3.7729 3.7742 21.726 90.0 90.0 90.0 , V=309.37 Space group: IMMM (71)

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