AM_Weloganite Formula: (Sr2.79 Ca.21) Zr Na2 C6 O21 H2.42 Name: Weloganite Unit cell: 8.966 8.98 6.73 102.72 116.65 60.66 , V=422.18 Space group: P1 (1)

Grice J D , Perrault G , The Canadian Mineralogist , 13 (1975) p.209-216, The crystal structure of triclinic weloganite, Note: y-coordinate of Sr2 changed., Locality: St. Michel, Montreal Island, Quebec, Canada