AM_Scawtite Formula: Ca7 Si6 C O23 H4 Name: Scawtite Unit cell: 10.118 15.187 6.626 90.0 100.67 90.0 , V=1000.56 Space group: I12/M1 (12)

Pluth J J , Smith J V , American Mineralogist , 58 (1973) p.1097-1097, The crystal structure of scawtite, Note sample is from Crestmore, California, USA