"Aluminosilicate of Mg, Ca and alkalis" Probably a mixture, but needs re-examination.
Originally reported from Balvraid, Glen Beag, Glenelg, North West Highlands (Inverness-shire), Scotland, UK.
(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.
