云南磷铝石谱学特征研究
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摘要
使用电子探针、X射线粉晶衍射仪、傅里叶变换红外光谱仪、激光拉曼光谱仪、紫外可见分光光度计等仪器,对最近在云南发现的一种达到宝石级别的磷铝石进行了化学成分、矿物组成、红外吸收光谱、拉曼光谱、紫外可见吸收光谱等方面的研究。化学成分分析结果表明,该磷铝石的主要化学成分为P和Al,并含有少量的Fe和V;X射线粉晶衍射结果显示,该磷铝石的矿物成分主要为磷铝石,杂质较少;红外光谱与拉曼光谱分析均检出磷酸根基团的特征峰,红外光谱分析还显示有结晶水与结构水的存在;紫外可见吸收光谱在300和420 nm附近的吸收归属于Fe3+,630 nm附近较宽缓的吸收带由Fe3+和V3+共同产生。并将磷铝石与绿松石进行了谱学方面的对比分析,以便更好地区分两者。
Recently a new producing area of high-quality variscite has been found. The authors used such means as X-ray powder diffraction( XRD), EPMA analysis, infrared spectrometer, laser Raman spectrometer and ultra-violet-visible spectrophotometry to investigate this natural object. EPMA shows that the variscite in Yunnan is mainly composed of P and Al, and contains trace Fe and V; XRD shows that the mineral composition is very pure; the infrared spectrum and Raman spectrum show characteristic absorption band of [PO4] group. FTIR also shows the existence of constitution water and crystallization water; UV spectra show that Fe3 +causes the absorption peaks around 300 nm and 420 nm whereas Fe3 +and V3 +cause the wild absorption band around 630 nm. Due to the fact that the variscite is often used as an imitation of turquoise, the authors made a comparative analysis of the spectra of the variscite and turquoise in order to distinguish the two minerals.
Recently a new producing area of high-quality variscite has been found. The authors used such means as X-ray powder diffraction( XRD), EPMA analysis, infrared spectrometer, laser Raman spectrometer and ultra-violet-visible spectrophotometry to investigate this natural object. EPMA shows that the variscite in Yunnan is mainly composed of P and Al, and contains trace Fe and V; XRD shows that the mineral composition is very pure; the infrared spectrum and Raman spectrum show characteristic absorption band of [PO4] group. FTIR also shows the existence of constitution water and crystallization water; UV spectra show that Fe3 +causes the absorption peaks around 300 nm and 420 nm whereas Fe3 +and V3 +cause the wild absorption band around 630 nm. Due to the fact that the variscite is often used as an imitation of turquoise, the authors made a comparative analysis of the spectra of the variscite and turquoise in order to distinguish the two minerals.
引文
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Chen Quanli,Qi Lijian and Zhang Yan.2006.IR absorption spectrum representation of Turquoise,treated turquoise and imitation[J].Journal of Gems&Gemmology,8(1):9(in Chinese).
Chen Quanli,Yuan Xinqiang,Qi Lijian,et al.2010.Study on the treatment turquoise using Raman spectroscopy[J].Spectroscopy and Spectral Analysis,7:1 789~1 792(in Chinese).
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Frost R L,Weier M L,Erickson K L,et al.2004.Raman spectroscopy of phosphates of the variscite mineral group[J].Journal of Raman Spectroscopy,35(12):1 047~1 055.
Gao Wa,Yang Chun and Ma Li.2010.Gemmological characteristics and mineral components of“American Apple-Green"Jade[J].Journal of Gems&Gemmology,12(4):36~39(in Chinese).
Jastrzbski W,Sitarz M,Rokita M,Buat K.2011.Infrared spectroscopy of different phosphates structures[J].Spectrochimica Acta Part A:Molecular and Biomolecular Spectroscopy,79(4):722~727.
Larsen E S.1942.The mineralogy and paragenesis of the variscite nodules from near Fairfield,Utah.Part 3[J].American Mineralogist,27:441~451.
Livinenko A K,Sorokina E S,Karampelas S,et al.2016.Variscite from Central Tajikistan:Preliminary Results[J].Gems&Gemmology,52(1):60~65.
Qi Lijian,Yuan Xinqiang and Cao Shumin.2005.Representation and application of infrared reflection spectra of gems[J].Journal of Gems&Gemmology,7(4):21~25(in Chinese).
Zhou Yan,Qi Lijian,Dai Hui,et al.2014.The gemological and mineral characteristics of variscite from Ma'anshan of Anhui Province[J].Rock and Mineral Analysis,33(5):690~697(in Chinese).
陈全莉,亓利剑,张琰.2006.绿松石及其处理品与仿制品的红外吸收光谱表征[J].宝石和宝石学杂志,8(1):9.
陈全莉,袁心强,陈敬中,等.2010.拉曼光谱在优化处理绿松石中的应用研究[J].光谱学与光谱分析,7:1789~1792.
高娃,杨春,马利.2010.“美国苹果绿"的宝石学特征及矿物组成[J].宝石和宝石学杂志,12(4):36~39.
亓利剑,袁心强,曹姝旻.2005.宝石的红外反射光谱表征及其应用[J].宝石和宝石学杂志,7(4):21~25
周彦,亓利剑,戴慧,等.2014.安徽马鞍山磷铝石宝石矿物学特征研究[J].岩矿测试,33(5):690~697.
Calas G,Galoisy L and Kiratisin A.2005.The origin of the green color of variscite[J].American Mineralogist,90(5~6):984~990.
Chen Quanli,Qi Lijian and Zhang Yan.2006.IR absorption spectrum representation of Turquoise,treated turquoise and imitation[J].Journal of Gems&Gemmology,8(1):9(in Chinese).
Chen Quanli,Yuan Xinqiang,Qi Lijian,et al.2010.Study on the treatment turquoise using Raman spectroscopy[J].Spectroscopy and Spectral Analysis,7:1 789~1 792(in Chinese).
Fritsch E and Rossman G R.1987.An update on color in gems.Part I:Introduction and colors caused by dispersed metal ions[J].Gems&Gemology,23:126~139.
Frost R L,Weier M L,Erickson K L,et al.2004.Raman spectroscopy of phosphates of the variscite mineral group[J].Journal of Raman Spectroscopy,35(12):1 047~1 055.
Gao Wa,Yang Chun and Ma Li.2010.Gemmological characteristics and mineral components of“American Apple-Green"Jade[J].Journal of Gems&Gemmology,12(4):36~39(in Chinese).
Jastrzbski W,Sitarz M,Rokita M,Buat K.2011.Infrared spectroscopy of different phosphates structures[J].Spectrochimica Acta Part A:Molecular and Biomolecular Spectroscopy,79(4):722~727.
Larsen E S.1942.The mineralogy and paragenesis of the variscite nodules from near Fairfield,Utah.Part 3[J].American Mineralogist,27:441~451.
Livinenko A K,Sorokina E S,Karampelas S,et al.2016.Variscite from Central Tajikistan:Preliminary Results[J].Gems&Gemmology,52(1):60~65.
Qi Lijian,Yuan Xinqiang and Cao Shumin.2005.Representation and application of infrared reflection spectra of gems[J].Journal of Gems&Gemmology,7(4):21~25(in Chinese).
Zhou Yan,Qi Lijian,Dai Hui,et al.2014.The gemological and mineral characteristics of variscite from Ma'anshan of Anhui Province[J].Rock and Mineral Analysis,33(5):690~697(in Chinese).
陈全莉,亓利剑,张琰.2006.绿松石及其处理品与仿制品的红外吸收光谱表征[J].宝石和宝石学杂志,8(1):9.
陈全莉,袁心强,陈敬中,等.2010.拉曼光谱在优化处理绿松石中的应用研究[J].光谱学与光谱分析,7:1789~1792.
高娃,杨春,马利.2010.“美国苹果绿"的宝石学特征及矿物组成[J].宝石和宝石学杂志,12(4):36~39.
亓利剑,袁心强,曹姝旻.2005.宝石的红外反射光谱表征及其应用[J].宝石和宝石学杂志,7(4):21~25
周彦,亓利剑,戴慧,等.2014.安徽马鞍山磷铝石宝石矿物学特征研究[J].岩矿测试,33(5):690~697.