AM_Rapidcreekite Formula: Ca2 S C O11 H8 Name: Rapidcreekite Unit cell: 15.517 19.226 6.1646 90.0 90.0 90.0 , V=1839.08 Space group: PCNB (60)

Cooper M A , Hawthorne F C , The Canadian Mineralogist , 34 (1996) p.99-106, The crystal structure of rapidcreekite, Ca2(SO4)(CO3)(H2O)4,, and its relation to the structure of gypsum