缅甸淡紫色翡翠的颜色成因
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摘要
选取缅甸的白、淡粉紫和淡蓝紫3种颜色类型的翡翠样品,测试和分析了其元素和光吸收谱,并对其颜色成因进行了初步研究。结果表明,淡紫色翡翠样品含有少量的铁、锰和钛,而铬、钒、铜等元素的含量极低。除了Fe3+的吸收峰之外,淡粉紫色翡翠光谱中还存在峰值位于566nm处的宽吸收带,淡蓝紫色翡翠光谱中存在峰值位于534nm处的宽吸收带及长波侧625nm处的肩带,因此,淡粉紫色和淡蓝紫色翡翠分别由Mn3+和Ti3+离子致色。
Three kinds of white,pale-pink purple and light-blue purple jadeite samples from Myanmar are selected for the test and analysis of elements and optical absorption spectra,and their color origins are preliminary studied.The results show that the lavender jadeite samples contain a small amount of iron,manganese and titanium,while the contents of chromium,vanadium and copper are extremely low.In addition to the absorption peak of Fe~(3+) ,the pale-pink purple jadeite has a broad absorption band peaking at 566 nm,and the light-blue purple jadeite has a broad absorption band peaking at 534 nm and a shoulder band at 625 nm on the long-wave side.It is inferred that the palepink purple and light-blue purple jadeite are mainly colored by Mn~(3+) and Ti3 +ions,respectively.
Three kinds of white,pale-pink purple and light-blue purple jadeite samples from Myanmar are selected for the test and analysis of elements and optical absorption spectra,and their color origins are preliminary studied.The results show that the lavender jadeite samples contain a small amount of iron,manganese and titanium,while the contents of chromium,vanadium and copper are extremely low.In addition to the absorption peak of Fe~(3+) ,the pale-pink purple jadeite has a broad absorption band peaking at 566 nm,and the light-blue purple jadeite has a broad absorption band peaking at 534 nm and a shoulder band at 625 nm on the long-wave side.It is inferred that the palepink purple and light-blue purple jadeite are mainly colored by Mn~(3+) and Ti3 +ions,respectively.
引文
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[10]Pan Z L.Crystallography and mineralogy[M].3rd ed.Beijing:Geological Publishing House,1998.潘兆橹.结晶学及矿物学[M].3版.北京:地质出版社,1998.
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[12]Ghose S,Kersten M,Langer K,et al.Crystal field spectra and jahn teller effect of Mn3+in clinopyroxene and clinoamphiboles from India[J].Physics and Chemistry of Minerals,1986,13(5):291-305.
[13]Skogby H,Halenius U,Kristiansson P,et al.Titanium incorporation and VITi 3+-IVTi 4+charge transfer in synthetic diopside[J].American Mineralogist,2006,91(11/12):1794-1801.
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[15]Moulton P F.Spectroscopic and laser characteristics of TiAl2O3[J].Journal of the Optical Society of America B,1986,3(1):125-133.
[2]Ouyang Q M.Characteristics of violet jadeite jade and probe into its coloration mechanism[J].Journal of Gems&Gemmology,2001,3(1):1-6.欧阳秋眉.紫色翡翠的特征及成色机理探讨[J].宝石和宝石学杂志,2001,3(1):1-6.
[3]Rossman G R.Lavender jade.The optical spectrum of Fe3+and Fe2+→Fe3+intervalence charge transfer in jadeite from Burma[J].American Mineralogist,1974,59:868-870.
[4]He W,Wang Y Q,Mao J.Coloring mechanism of purple jadeite[J].Journal of East China University of Science and Technology(Natural Science Edition),2011,37(2):182-185.何伟,王以群,毛荐.紫色翡翠致色机理探讨[J].华东理工大学学报(自然科学版),2011,37(2):182-185.
[5]Xie Y H,Wang C Y.Trace elements in jadeites with different color and their infrared spectra characteristics[J].Rock and Mineral Analysis,2003,22(3):183-187.谢意红,王成云.不同颜色翡翠的微量元素及红外光谱特征[J].岩矿测试,2003,22(3):183-187.
[6]Lu R.Color origin of lavender jadeite:an alternative approach[J].Gems&Gemology,2012,48(4):273-283.
[7]Lang X B,Mao J,Liu X L,et al.Study of spectroscopical characteristics and coloring factor of lavender jadeite[J].Laser&Optoelectronics Progress,2014,51(6):063001.郎小波,毛荐,刘学良,等.紫色翡翠的谱学特征及颜色成因探讨[J].激光与光电子学进展,2014,51(6):063001.
[8]Li X.The color causing mechanism and influencing factors of lavender Feicui in Myanmar[D].Beijing:China University of Geosciences,2012.李曦.缅甸紫色翡翠的致色机理及影响因素研究[D].北京:中国地质大学,2012.
[9]Yin X L.The coloring mechanisms of purple jadeite[J].Jewelry Science and Technology,2004,16(3):40-42.殷小玲.紫色翡翠呈色机制探讨[J].珠宝科技,2004,16(3):40-42.
[10]Pan Z L.Crystallography and mineralogy[M].3rd ed.Beijing:Geological Publishing House,1998.潘兆橹.结晶学及矿物学[M].3版.北京:地质出版社,1998.
[11]Amthauer G,Rossman G R.Mixed valence of iron in minerals with cation clusters[J].Physics and Chemistry of Minerals,1984,11(1):37-51.
[12]Ghose S,Kersten M,Langer K,et al.Crystal field spectra and jahn teller effect of Mn3+in clinopyroxene and clinoamphiboles from India[J].Physics and Chemistry of Minerals,1986,13(5):291-305.
[13]Skogby H,Halenius U,Kristiansson P,et al.Titanium incorporation and VITi 3+-IVTi 4+charge transfer in synthetic diopside[J].American Mineralogist,2006,91(11/12):1794-1801.
[14]Prewitt C T,Burnham C W.The crystal structure of jadeite,NaAlSi2O6[J].American Mineralogist,1966,51:956-975.
[15]Moulton P F.Spectroscopic and laser characteristics of TiAl2O3[J].Journal of the Optical Society of America B,1986,3(1):125-133.