阿富汗石的宝石学及谱学特征

卢雯婷; 曹建武; 张磊; 张秋生; 和盛梅

doi:10.15964/j.cnki.027jgg.2018.05.004

阿富汗石的宝石学及谱学特征

1. 国家珠宝玉石质量监督检验中心云南实验室, 云南昆明 650000;
2. 昆明理工大学城市学院, 云南昆明 650000

基金项目:

NGTC科研基金项目(NGTCQT18009)

详细信息

作者简介:
卢雯婷(1988-),女,工程师,硕士,主要从事珠宝玉石检测工作。

中图分类号: TS93
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出版历程
- 收稿日期: 2018-05-10

Gemmological and Spectral Characteristic of Afghanite

1. National Gemstone Testing Center Yunnan Lab, Kunming 650000, China;
2. Kunming University of Science and Technology City College, Kunming 650000, China

摘要

摘要: 阿富汗石(Afghanite)是1968年于阿富汗Badakhshan(巴达赫尚省)发现的一种矿物,与市面上常见的阿富汗玉不同,为似长石结构的一种钙霞石矿物。通过常规宝石学测试、X射线粉末衍射、电子探针、傅里叶红外吸收光谱等测试方法对阿富汗石样品进行了分析。结果表明,阿富汗石样品的主要矿物组成为阿富汗石(Afghanite),含有微量的钾钙霞石(Davyne)及利钙霞石(Liottite)。通过紫外-可见光吸收光谱测试,结果显示,阿富汗石样品在可见光(400~700 nm)区域内仅透过蓝光及少量红光,使其呈现蓝色,600 nm处可能与S^3-在轨道之间的跃迁有关,400 nm处可能与S^2-和SO₄^2-离子的电荷转移有关,说明阿富汗石蓝色的颜色成因与S元素有关。
- 阿富汗石 /
- 化学成分 /
- 谱学特征 /
- 成色机理
Abstract: The afghanite is found in Badakhshan Province, Afghanistan, in 1968, which is quite different from the white "Afghan jade" on the market.The afghanite is a calcareous mineral like the feldspar. In this paper, the authors studied the gemmological and spectral characteristics of afghanite samples by means of conventional gemmological tests, X-ray diffraction(XRD), electron microprobe(EPMA), Fourier transform infrared spectrometer(FTIR), ultraviolet-visible absorption spectrometer(UV-Vis). The main mineral component of the afghanite samples is afghanite, containing trace davyne and liottite. In order to preliminarily study the colour forming mechanism of afghanite, ultraviolet-visible absorption spectrometer(UV-Vis) result showed that only blue light and a amount of red light are transmitted in the visible region (400-700 nm), thus showing the blue colour of afghanite. The absorption peak at 600 nm may be related to the transition of S^3-, and peak at 400 nm may be related to the charge transfer of S^2- and SO₄^2- ions. It indicated that the colour of afghanite is related to sulfur element.
- afghanite /
- chemical composition /
- spectral characteristic /
- colouring mechanism

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参考文献(9)

[1]	王濮,潘兆橹,翁玲宝,等.系统矿物学(中)[M].北京:地质出版社,1987: 91.
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文章访问数: 612
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阿富汗石的宝石学及谱学特征

作者简介: 卢雯婷(1988-),女,工程师,硕士,主要从事珠宝玉石检测工作。

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出版历程

Gemmological and Spectral Characteristic of Afghanite

计量

出版历程

目录

作者简介:
卢雯婷(1988-),女,工程师,硕士,主要从事珠宝玉石检测工作。