AM_Fetiasite Formula: As2 Fe2.38 Ti.58 O7 Name: Fetiasite Unit cell: 10.616 3.242 8.932 90.0 108.89 90.0 , V=290.86 Space group: P121/M1 (11)

Graeser S , Schwander H , Demartin F , Gramaccioli C M , Pilati T , Reusser E , American Mineralogist , 79 (1994) p.996-1002, Fetiasite (Fe2+,Fe3+,Ti)3O2[As2O5], a new arsenite mineral: Its description, and structure determination, Note: Sample B, Locality: Legenbach quarry, Binnatal, Switzerland