红色长石的宝石学特征研究

裴景成; 谢浩; 孙春林

红色长石的宝石学特征研究

1. 中国地质大学珠宝学院, 湖北武汉 430074;
2. 中国地质大学江城学院, 湖北武汉 430200

详细信息

作者简介:
裴景成(1974-),男,讲师,CGC,中国地质大学(武汉)矿物学岩石学矿床学专业宝石学方向博士研究生,主要从事宝石学的教学与研究工作。

中图分类号: P619.28;TS93
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出版历程
- 收稿日期: 2009-06-24
- 修回日期: 2009-08-06

Study on Gemmological Characteristics of Red Feldspar

1. Gemmological Institute, China University of Geosciences, Wuhan 430074, China;
2. Jiangcheng College, China University of Geosciences, Wuhan 430200, China

摘要

摘要: 近几年在国内外珠宝市场上出现了一种红色透明长石, 其天然性引起了广泛的争议。采用常规的宝石学方法、LA-ICP-MS以及紫外-可见分光光度计等测试仪器研究了该红色长石样品的宝石学特征、化学成分及紫外-可见吸收光谱, 旨在探讨其致色原因。结果表明, 该红色长石样品属于中长石;与黄色长石样品相比, 其化学成分中Cu的质量分数为739×10^-6~801×10^-6, 远远高于黄色长石的 (1.07×10^-6), 而其它微量元素的质量分数则无明显的差别, 故认为Cu可能与其呈红色有关;紫外-可见吸收光谱结果显示, 该红色长石样品在可见光区的吸收带主要位于566 nm处, 推测其可能与Cu对可见光的吸收有关。
- 红色长石 /
- Cu致色 /
- LA-ICP-MS
Abstract: A type of red and transparent feldspar has recently appeared on domestic and overseas gem markets, whose natural characteristic is much controversial.For studying the origin of the red colour, the gemmological characteristics, chemical compositions and UV-VIS absorption spectra are tested by using the conventional methods, LA-ICP-MS and UV-VIS spectrophotometer.The results show that the red feldspar samples belong to andesine.Compared with the yellow feldspar samples, the content of Cu is 739×10^-6~801×10^-6 in the red feldspar samples, which is more higher than that in the yellow feldspar samples (1.07×10^-6), and the contents of the other elements have no significant differences.Therefore, the colour of the red feldspar samples may be related to the Cu.The results of the UV-VIS absorption spectra indicate that the red feldspar samples have the absorption band at 566 nm, which is due to intrinsic absorption of light caused by Cu.
- red feldspar /
- coloration of Cu /
- LA-ICP-MS

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参考文献(8)

[1]	Kamolwan Thirangoon.Effects of heating and copper diffusion on feldspar-An on-going research[EB/OL].www.gia.edu/research-resources, 2009-04.
[2]	Anne M Hofmeister, George R Rossman.Exsolution of metallic copper from Lake County labradorite[J].Geology, 1985, 13 (9):644-647.
[3]	Gem news:Red andesine feldspar from Congo[J].Gems & Gemology, 2002, 38 (2):94-95.
[4]	Gem news international:visit to andesine mines in Tibet and Inner Mongolia[J].Gems & Gemology, 2008, 44 (4):369-371.
[5]	Gem news international:gemological properties of andesine collected in Tibet and Inner Mongolia[J].Gems & Gemology, 2008, 44 (4):371-373.
[6]	Yongsheng Liu, Zhaochu Hu, Shan Gao, et al.In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J].ChemicalGeology, 2008, 257 (1):34-43.
[7]	陈道前.山东蓝宝石中Fe³⁺电子跃迁谱带的指派[J].西南工学院学报, 1995, 10 (4):98-101.
[8]	马尔福宁.矿物物理学导论[M].李高山等译.北京:地质出版社, 1984.170-177.

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红色长石的宝石学特征研究

作者简介: 裴景成(1974-),男,讲师,CGC,中国地质大学(武汉)矿物学岩石学矿床学专业宝石学方向博士研究生,主要从事宝石学的教学与研究工作。

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Study on Gemmological Characteristics of Red Feldspar

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目录

作者简介:
裴景成(1974-),男,讲师,CGC,中国地质大学(武汉)矿物学岩石学矿床学专业宝石学方向博士研究生,主要从事宝石学的教学与研究工作。