AM_Montebrasite Formula: P Al O5 Li H Name: Montebrasite Unit cell: 6.713 7.708 7.0194 91.31 117.93 91.77 , V=320.46 Space group: C-1 (2)

Groat L A , Raudsepp M , Hawthorne F C , Ercit T S , Sherriff B L , Hartman J S , American Mineralogist , 75 (1990) p.992-1008, The amblygonite-montebrasite series: Characterization by single-crystal, structure refinement, infrared spectroscopy and multinuclear MAS-NMR, spectroscopy, sample AF-47