AM_Britholite-(La)
Formula: (La4.277 Na.723) Si3 O12.55 F.45
Name: Britholite-(La)
Unit cell: 9.678 9.682 7.1631 90.0 90.0 120.04 , V=581.04
Space group: P1121 (4)

Hughes J M , Mariano A N , Drexler J W , Neues Jahrbuch fur Mineralogie, Monatshefte , 1992 (1992) p.311-319, Crystal structures of synthetic Na-REE-Si oxyapatites, synthetic monoclinic britholite, Locality: synthetic