AM_Montebrasite_12 Formula: P Al O4.55 F.45 H.55 Li.99 Name: Montebrasite Unit cell: 6.6871 7.7085 6.966 90.983 117.76 91.387 , V=317.49 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 = 75 K