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Be扩散处理、热处理和天然双色昌乐蓝宝石的宝石学特征与鉴别 被引量:12

Gemology Characterization and Identification of Beryllium Diffused,Heated and Untreated Bicolor Sapphires from Changle City,China
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摘要 对中国山东昌乐Be扩散处理、热处理和未处理双色蓝宝石(黄色和蓝色)进行了宝石学常规测试、紫外可见光谱、红外光谱、电子探针和激光剥蚀电感耦合等离子体质谱(LA-ICP-MS)测试,以获得它们的谱学特征,提出其鉴别方法。研究发现Be扩散处理双色蓝宝石仅出现Fe3+—Fe3+形成的紫外可见吸收峰,而且377nm吸收峰的强度异常高。红外光谱中,热处理和未处理的双色蓝宝石存在明显的3 310cm-1羟基吸收峰,而该吸收峰在Be扩散处理双色蓝宝石中消失。因此,紫外可见光谱和红外光谱可用于鉴别Be扩散处理、热处理和未处理双色蓝宝石。另外,二碘甲烷浸油实验也可识别Be扩散处理双色蓝宝石。 Be-diffused,heated and untreated bicolor sapphires(blue and yellow) from Changle City,Shandong Province,China were studied by using standard gemological methods,ultraviolet-visible(UV-Vis) spectroscopy,infrared(IR) spectroscopy,electron microprobe,and laser ablation inductively coupled plasma mass spectrometry(LA-ICP-MS) to obtain the spectra characterization,and to suggest identification methods for them.Only Fe3+—Fe3+ absorption bands formed in ultraviolet region appear in Be-diffused bicolor sapphire,which is especially strong at 377 nm.In IR absorption spectra,absorption peak at 3 310 cm-1 appears in heated and untreated bicolor sapphires,while it disappears in Be-diffused bicolor sapphire.Therefore,UV-Vis and IR absorption spectra can be used to identify Be-diffused,heated and untreated bicolor sapphires.On the other hand,methylene iodide immersion observation also can be used to identify Be-diffused bicolor sapphire.
作者 陈涛 杨明星
出处 《光谱学与光谱分析》 SCIE EI CAS CSCD 北大核心 2012年第3期651-654,共4页 Spectroscopy and Spectral Analysis
基金 国家自然科学基金项目(40702007) 中国博士后面上项目(20100480925)资助
关键词 双色蓝宝石 紫外可见光谱 红外光谱 二碘甲烷浸液 Bicolor sapphire UV-Vis spectroscopy IR spectroscopy Methylene iodide immersion
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参考文献15

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