AM_Wenkite_1 Formula: Ba3.96 Ca4.92 Al13.018 Si6.982 O51.74 S3 H4 Name: Wenkite Unit cell: 13.515 13.515 7.465 90.0 90.0 120.0 , V=1180.84 Space group: P-62M (189)

Wenk H R , Zeitschrift fur Kristallographie , 137 (1973) p.113-126, The structure of wenkite, Locality: Cava Mergozzoni, Candoglia, Norvara, Italy