AM_Whitlockite_9 Formula: Ca10.115 Mg.385 P7 O28 Name: Whitlockite Unit cell: 10.401 10.401 37.316 90.0 90.0 120.0 , V=3496.04 Space group: R3C (161)

Schroeder L W , Dickens B , Brown W E , Journal of Solid State Chemistry , 22 (1977) p.253-262, Crystallographic studies of the role of Mg as a stabilizing impurity in, beta-Ca3(PO4)2. II. Refinement of Mg-containing beta-Ca3(PO4)2, Locality: synthetic, Sample: x = 0.11 Mg, Note: changed sign of O3(y) to match bond distances