AM_Whitlockite_11
Formula: Ca9 Mg P7 (O28 H)
Name: Whitlockite
Unit cell: 10.35 10.35 37.085 90.0 90.0 120.0 , V=3440.41
Space group: R3C (161)

Gopal R , Calvo C , Ito J , Sabine W K , Canadian Journal of Chemistry , 52 (1974) p.1155-1164, Crystal structure of synthetic Mg-whitlockite, Ca18Mg2H2(PO4)14, Locality: synthetic