AM_Fluorapatite_17 Formula: (Ca4.32 Mn.68) P3 O12 F Name: Fluorapatite Unit cell: 9.3429 9.3429 6.811 90.0 90.0 120.0 , V=514.88 Space group: P63/M (176)

Hughes J M , Ertl A , Bernhardt H J , Rossman G R , Rakovan J F , American Mineralogist , 89 (2004) p.629-632, Mn-rich fluorapatite from Autria: Crystal structure, chemical analysis, and, spectroscopic investigations