电气石的偏振拉曼光谱研究

STUDY ON POLARIZED RAMAN SPECTRA OF TOURMALINE

电气石达到宝石级称碧玺。通过电气石偏振拉曼光谱的实验研究，表明随电气石含铁量增高电气石中Ｓｉ－Ｏ伸缩振动峰发生分裂，峰形变大。不同成因的电气石晶体中（ＯＨ）－离子占位不同，变质岩型、矽卡岩型电气石中（ＯＨ）－只有一个有序占位。

According to the experimental study on the polarized Raman spectra of tourmaline, it shows that, with the Fe contents increasing, the stretch vibration band of Si-O bond in tourmaline is split and the band shape becomes wider. Among tourmalines of different origins, the site occupations of hydroxyl are different such as only one ordered site occupation of hydroxyl exists in tourmalines of metamorphite type and skarn type, but two disordered site occupations of hydroxyl exist in tourmalines of pegmatite type and thermal deposit type.