AM_Montebrasite_8 Formula: P Al O4.96 F.04 H.96 Li Name: Montebrasite Unit cell: 6.7158 7.7113 7.0232 91.343 117.953 91.778 , V=320.83 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 Dunton Gem Min, Oxford County, Maine at T = 150 K