Micas of deposit Taykeu (Polar Urals): composition and questions of classification

The current classification of micas in mica deposits Taikeu example is discussed. The triangular diagram in the coordinates of Fe + Mg + Mn-F-Al/Si, which allows to relate obtained by microprobe analysis composition to one of the lithium mica series, is proposed. The possibility of local analysis of the lithium and some trace elements contents in mica by LA-ICP-MS is considered. It is shown that phengites Taikeu close to FeAl-celadonite and contain up to 50 % FeAl-seladonite minal, Li dispersed in mica at 0.5–1 wt. %, lithium-rich mica zinnwaldite is not characteristic for Taikeu deposit.