四川蛇纹石猫眼的红外吸收光谱研究

• 作 者: 卢保奇 夏义本 亓利剑
• 机 构: School of Materials Science and Engineering, Shanghai University, Shanghai 200072, P.R. China;Gemmol
• 出 处: 上海大学学报（英文版）
• 发表日期: 2005年4期
• 关键词: serpentine cats eye infrared spectrum absorption band assigned

Infrared (IR) absorption spectra and X-ray powder diffraction (XRD) patts of serpentine cat s eye from Sichuan Province have been investigated, and infrared absorption bands of the serpentine have been assigned in this paper. The results indicate that the bands near 3 600 - 3 700 cm- 1 belong to the stretching absorption band νoH, the bands in 948 - 1 100 cm- 1 are assigned to the stretching serpentine cats eye includes two types: chrysotile and antigorite. Chrysotile has a sharp and intensive band at 3 688 cm-1 and a weak band at 3 643 cm-1, while antigorite has only one intensive band in the region. At vibration band νsi-o, chrysotile and antigorite have a similar feature at 1 071 cm-1, but the band at 980 cm-1 in antigorite has been split into two bands in chrysotile - a strong one at 1 027 cm-1 and a weak one at949 cm-1 . In addition, antigorite has a characteristic bending vibrating band δMg-o at570 cm-1 . Based on the analysis of the feature of crystal structure, their IR differences are well explained.