Muscovite in the deposit can be divided into four generations according to their formation spochs. Muscovite (Ⅰ) is in unaltered slates formed in regional metamorphic process, muscovite (Ⅱ) is in yellowish green slates formed in early quartz-carbonatization process, muscovite (Ⅲ) is in slates formed in W mineralizing process, and muscovite (Ⅳ)is in slates formed in Au-Sb mineralizing process.There are differences in chemical contents of muscovites of different generations. The contents of K, Cu, Pb and Th of muscovites in W mineralized slates are high; the contents of Ca, P, Ni, Zn, Sb and As of muscovites in Au-Sb mineralized slate are also high. Element ratios, such as Cu/Zn, Rb/Zn, Fe/(Co+Ni), Ti/P, Th/Nd, are different in muscovites of different generations. Multivariant analyses show that the natural associations of elements correspond with the main mineralizing processes. Crystallochemical formula of muscovites of the deposit was calculated based on EPA results. Interlayer cations are deficient obviously. Muscovites in the deposit belong to lepidomorphite, and are all of 2M1polytype. The values ofd060are all lower than 1.50°A.b0values show that the pressure of the mineralizing process is low. Crystallochemical parameters of muscovites can indicate the formation conditions of the deposit.Infrared spectra of muscovites of different generations were studied. There are differences in thermal analyses of muscovites of different generations.