摘要
采用电子探针、Raman光谱和电子顺磁共振吸收谱对新近发现的四川软玉猫眼进行了研究。结果表明:四川软玉猫眼主要由透闪石矿物组成。软玉猫眼的主要杂质离子为Fe^(3+),Fe^(2+)和Mn^(2+),其Raman吸收频率主要出现在940～1105,650～760cm^(-1)和450～510cm^(-1)范围内。3600～3800cm^(-1)范围内—OH伸缩振动Raman谱带分裂,并向低波数方向位移,这主要与Mg^(2+)和Fe^(2+)的含量有关。Fe^(2+)的含量越高。软玉猫眼黄绿的色调就越深。Fe^(3+)和Mn^(2+)离子占位于透闪石晶格中Mg—O(OH)八面体的Mg^(2+)位置。
Nephrite cat＇s eye from Sichuan province was studied by electronic probe microscopy, Raman spectrum and electron paramagnetic resonance. The results indicate that the main phase of the nephrite cat＇s eye is tremolite, and the main impurity ions are Fe^3＋, Fe^2＋ and Mn^2＋. The Raman major absorption frequencies of the nephrite cat＇s eye appear around 940-1 105, 650-760 cm^-1 and 450-510 cm^-1. The division of the -OH stretching vibration band appears around 3 600-3 800 cm^-1 and the band shifts to a lower wave number, mainly relative to the content of Mg^2＋ and Fe^2＋. The higher the content of Fe^2＋ ion is, the darker the color of the cat＇s eye is. The Fe^3＋ and Mn^2＋ occupy the position of Mg^2＋ in the octahedral Mg-O（OH） of tremolite.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2007年第11期1492-1494,共3页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金(49772096)
上海市教育委员会发展基金(03AK23)资助项目。
