摘要
利用偏振喇曼光谱（PRS）和傅里叶变换红外光谱（FTIR）研究了三种不同成因电气石单晶的振动谱学特征。PRS研究表明电气石结构中三个阴离子团（即[Si6O18]12-、[BO3]3-、[OH]－）的喇曼光谱在平行。轴方向（／／NE）比垂直c轴方向（／／No）敏锐，而且[OH]-喇曼光谱只在平行c轴的PRS中才观察到。不同成因电气石中[OH]-占位不同。结合FTIR研究发现在伟晶型和热液型的电气石的隧道中还存在结晶水。这些发现不但在晶体化学、矿床成因方面有意义，而且为此类含水电气石的改性（如颜色、透明度、压电性及热电性等）提供了新思路。
On the basis of the palorized Raman spectra (PRS) and Fourier transform infrared spectra(FTIR) date, we describe the vibrational spectroscopic characteristics of single tourmaline crystalsof different geneses. All PRS of tourmaline's anion groups which consist of (Si6O18)12-, (BO3)3-and (OH)- indicate that the Raman spectra in the N. direction (parallel to the c-axis) are moresensitive than those in the No direction (perpendicular to the c-axis), and the Raman spectra of(OH) group can only be observed from the NE direction. The occupancy of (OH)- varies with the genesis of tourmaline. In combination with FTIR data, it is found that there exists crystallized wa-ter in the tunnel of tourmaline which belongs to the pegmatitic or hydrothermal type. The discov-ery is helpful to research on crystal chemistry and genesis of tourmaline, but also provides new ideas for the varition of material properties (such as color, transparency, piezoelectricity, pyro-electricity, etc. ) of tourmaline which contains hydrogen species.
出处
《矿物学报》
CAS
CSCD
北大核心
1995年第4期372-377,共6页
Acta Mineralogica Sinica
基金
国家自然科学基金
