AM_Britholite-(Gd)
Formula:
(Gd4.405 Na.595) Si3 O12.81 F.19
Name:
Britholite-(Gd)
Unit cell:
9.41 9.413 6.874 90.0 90.0 120.01 , V=527.25
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