AM_Nastrophite Formula: Na (Sr.94 Ba.03 Ca.03) P O13.001 H18 Name: Nastrophite Unit cell: 10.559 10.559 10.559 90.0 90.0 90.0 , V=1177.25 Space group: P213 (198)

Baturin S V , Malinovskii Y A , Belov N V , Soviet Physics Doklady , 26 (1981) p.1023-1026, The crystal structure of nastrophite Na(Sr,Ba)[PO4]*9H2O