A variety of Muscovite
Described as an Mn-bearing "sericite" or muscovite pseudomorph after scapolite.
It comes from Canada Marble and Lime Quarry,
La Conception,Les Laurentides RCM,Laurentides,Quèbec,Canada.
Opaque to translucent is quite tough and has good polish.
Size: 8x9x5.6 mm.