(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
A.Lacroix (1922-3): Mineralogie de Madagascar (3) p.311-312; Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, 19-20