摘要
橄榄石作为八月的生辰石, 象征着和平友好、 生活美满。 目前针对张家口和蛟河两地橄榄石的振动光谱研究相对不足, 对其产地鉴别造成了一定的影响。 通过采用宝石学常规仪器、 红外光谱仪、 拉曼光谱仪及紫外—可见光谱仪, 对其振动光谱进行了系统的研究。 结果表明: 两地橄榄石的宝石学性特征基本一致, 前者的相对密度略大于后者;两地的红外特征光谱与拉曼位移基本一致, 其中红外特征谱峰主要集中在 400~1100cm^(-1), 这些锋位均与Si-O 或 Si-O-Si 振动相关, 张家口橄榄石在980cm^(-1)和 425cm^(-1)两处红外谱锋明显强于蛟河橄榄石;两地橄榄石在824cm^(-1)和 857cm^(-1)处均显示由 Si-O 对称伸缩振动和反向伸缩振动共同作用所致的拉曼位移;紫外—可见吸收光谱中, 前者在470nm 和 635nm 两处吸收峰都强于后者, 这也正是张家口橄榄石颜色偏绿的原因。
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作者
陶隆凤
苏慧慧
郝楠楠
金翠玲
TAO Long-feng;SU Hui-hui;HAO Nan-nan;JIN Cui-ling(Hebei GEO University,Shijiazhuang 050031,China;North China University of Science and Technology,Tangshan 063210,China)
出处
《河北地质大学学报》
2022年第2期52-55,共4页
Journal of Hebei Geo University
基金
国家自然科学基金资助项目(51574105)。
关键词
张家口
蛟河
橄榄石
振动光谱
Zhangjiakou
Jiaohe
peridot
vibration spectrum
