A mixture of Paragonite and Muscovite. Originally named for an alteration product of Topaz. [Clark, 1993 - "Hey's Mineral Index"]
Originally described from Shepherd and Murphy Mine, Moina District (Middlesex District), Tasmania, Australia.
(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.
