| 注胶晕长石的鉴定方法 |
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| 引用本文： | 李建军,刘晓伟,李桂华.注胶晕长石的鉴定方法[J].地质科学译丛,2011(4):43-46. |
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| 作者姓名： | 李建军 刘晓伟 李桂华 |
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| 作者单位： | [1]山东省计量检测重点实验室,山东省计量科学研究院,济南250014 [2]国家黄金钻石制品质量监督检验中心,济南250014 |
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| 摘 要： | 近期,国家黄金钻石制品质量监督检验中心对一串具蓝色晕彩的长石手链样品进行常规检测时,在长波紫外灯下多数珠子发中等强度的蓝白色荧光,且荧光在珠子中呈线状分布。为了对该长石样品进行准确定名,并探究其紫外荧光产生的原因,对其进行了常规宝石学检测、电子探针和红外光谱测试与分析。结果显示,该样品的折射率约为1.53,在显微镜下具有层状结构和针片状包裹体,结合其电子探针的分析结果,确定该样品为晕长石,即具有蓝色晕彩的钠长石;基于样品表面具有典型的＂蚯蚓行踪＂纹路、沿裂隙发出的紫外荧光及红外光谱下3 053,3 038cm^-1处的吸收峰,确定其为注胶处理的晕长石。
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| 关 键 词： | 晕长石 紫外荧光 红外光谱 充填处理 |
Methods for Identifying Polymer-filled Peristerite |
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| Authors: | LI Jian-jun LIU Xiao-wei LI Gui-hua |
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| Institution: | 1.Shandong Provincial Key Laboratory of Metrology and Measurement, Shandong Institute of Metrology,Jinan 250014,China; 2.National Gold ＆ Diamond Testing Center,Jinan 250014,China) |
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| Abstract: | Recently,National Gold Diamond Testing Center（NGDTC） has encountered a string of feldspar beads with blue iridescence during a usual testing.Most of the beads display blue-white fluorescence of moderate intensity under the long-wave ultraviolet ray,and the fluorescence is linearly distributed in the beads.In order to name the feldspar sample accurately and find out the cause of the ultraviolet fluorescence,the beads have been investigated by conventional gemmological testing,electron microprobe and infrared spectrometer.The results show that the refractive index of the sample is about 1.53 and that it has a layer structure and some needle inclusions under the microscope.With the results of electron microprobe,it can be decided that the sample is peristerite（albite with blue iridescence）.Moreover,based on the typical ＂earthworm movement＂ veins on the surface of the sample and the ultraviolet fluorescence from the fissures as well as the absorbed peaks at 3 053 and 3 038 cm^-1 in the infrared spectrum,it can be concluded that the sample is polymer-filled peristerite. |
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| Keywords: | peristerite ultraviolet fluorescence infrared spectrum filling |
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