AM_Apatite-(CaF)_7 Formula: (Ca4.395 Mn.605) P3 O12 F.74 Name: Apatite-(CaF) Unit cell: 9.343 9.343 6.8227 90.0 90.0 120.0 , V=515.77 Space group: P63/M (176)

Hughes J M , Cameron M , Crowley K D , American Mineralogist , 76 (1991) p.1857-1862, Ordering of divalent cations in the apatite structure: Crystal structure, refinements of natural Mn- and Sr-bearing apatite, sample Mn1.21