AM_Fluorapatite_8 Formula: Ca4.791 Mn.211 P3 O12 F.93 Name: Fluorapatite Unit cell: 9.3596 9.3596 6.8603 90.0 90.0 120.0 , V=520.46 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 Mn.42