AM_Fluorapatite_12 Formula: Ca4.584 Na.158 Dy.258 P2.874 Si.12 O12 F Name: Fluorapatite Unit cell: 9.3784 9.3784 6.8832 90.0 90.0 120.0 , V=524.30 Space group: P63/M (176)

Fleet M E , Pan Y , American Mineralogist , 80 (1995) p.329-335, Site preference of rare earth elements in fluorapatite, Sample: Dy-FAp