Gemmological Characteristics of Light Pink to Pink Beryls
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摘要: 以前珠宝市场上粉色系列绿柱石并不常见，近期发现粉色绿柱石数量增加，笔者对彩宝市场上的浅粉红色—粉红色绿柱石进行了宝石学特征研究。浅粉红色—粉红色这一系列的绿柱石与以前研究较多的祖母绿、海蓝宝石相比，颜色明显不同，在折射率、密度等方面也存在一定的差别。通过常规宝石仪器，红外光谱仪，X射线荧光能谱仪对这一系列绿柱石进行测试分析，对比发现其与常见的海蓝宝石存在一些差异；本文按照粉色绿柱石测试的折射率的结果分为A、B、C 3组，将同时检测的黄绿色绿柱石和常见的海蓝宝石分成2组，发现浅粉红色—粉红色绿柱石的折射率与密度存在正相关性，而且随着Cs元素替代的增加，Rb元素替代的减少，折射率与密度升高，粉红色绿柱石的折射率可高达1.61。Abstract: In this paper，the gemmological characteristics of light pink to pink beryl samples from jewelry market were studied.Compared to emerald and aquamarine，the colour of light pink to pink beryls is obviously different，as well as different refractive index and density.Conventional gemmological instruments，infrared spectrometer and X－ray fluorescence spectrometer were used to systematically study the pink beryl samples.According to the refractive index results，the pink beryls are divided into three groups，and the yellowish green beryls and common aquamarines are divided into two groups.It is found that the refractive index and density of pink beryl are positively correlated.As the concentration of Cs increases and the concentration of Rb decreases，the refractive index and density increase.The refractive index of aquamarine varies between 1.577and 1.583（±0.017），while the refractive index of pink beryl is up to 1.61.
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Keywords:
- pink beryl /
- infrared spectrum /
- gemmological characteristic
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[1] 秦善.绿柱石类宝石的颜色[J].中国宝玉石,1994(3):22-23. [2] 张本宏,陈振强.天然与合成彩色绿柱石的致色和宝石学特征[J].宝石和宝石学杂志,2002,4(1):34-37. [3] 张蓓莉.系统宝石学[M].2版.北京:地质出版社,2006:233-250,287-292. [4] 廖尚宜,彭明生.草莓红“绿柱石”的晶体化学研究[J].矿物学报,2003,23(4):319-322. [5] 廖尚宜,彭明生.一个新的宝石矿物——草莓红“绿柱石”的振动谱学特征[J].矿物学报,2005,25(1):60-64. [6] 廖尚宜,彭明生,李勋贵.马达加斯加草莓红绿柱石的成因与产状特征[J].矿物岩石地球化学通报,2006,25(2):133-136. [7] 彭文世,刘高魁.矿物红外光谱图集[M].北京:科学出版社,1982. [8] 闻辂,梁婉雪,昌正刚,等.矿物红外光谱学[M].重庆:重庆大学出版社,1988. [9] 刘琰,邓军,蔡克勤,等.四川平武板状绿柱石矿物学特征及板状成因[J].地学前缘,2005,12(2):324-331. [10] 阮青锋,张良钜,张昌龙,等.绿柱石的成因与特征的研究[J].矿产与地质,2008,22(3):265-269. [11] 饶灿,王汝成,胡欢.福建南平31号花岗伟晶岩脉中绿柱石的电子探针成分与成因[J].高校地质学报,2009,15(4):496-505. [12] 邹天人.中国海蓝宝石的成色机理及控制因素[J].矿床地质,1996,15(增刊):55-61. [13] 廖尚宜,彭明生,李国武.一种异常高锂-铯绿柱石的发现与晶体化学研究[J].矿物学报,2012(S1):28-29.
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