AM_Montebrasite_14 Formula: P Al O4.55 F.45 H.55 Li Name: Montebrasite Unit cell: 6.6914 7.715 6.9697 90.939 117.76 91.377 , V=318.15 Space group: C-1 (2)

Groat L A , Chakoumakos B C , Brouwer D H , Hoffman C M , Fyfe C A , Morell H , Schultz A J , American Mineralogist , 88 (2003) p.195-210, The amblygonite (LiAlPO4F) - montebrasite (LiAlPO4OH) solid solution:, A combined powder and single-crystal neutron diffraction and solid-state Li MAS, CP MAS,, and REDOR NMR study, Sample: from Tanco Pegmatite, Bernic Lake, Manitoba at T = 225 K