Fluorescence Characteristic of Fluorite from Namibia

LI Yuanjing; Shen Andy Hsitien

doi:10.15964/j.cnki.027jgg.2023.01.003

Volume 25 Issue 1

Jan. 2023

Turn off MathJax

Article Contents

Article Navigation > Journal of Gems & Gemmology > 2023 > 25(1): 21-27

LI Yuanjing, Shen Andy Hsitien. Fluorescence Characteristic of Fluorite from Namibia[J]. Journal of Gems & Gemmology , 2023, 25(1): 21-27. doi: 10.15964/j.cnki.027jgg.2023.01.003

Citation:

LI Yuanjing, Shen Andy Hsitien. Fluorescence Characteristic of Fluorite from Namibia[J]. Journal of Gems & Gemmology , 2023, 25(1): 21-27. doi: 10.15964/j.cnki.027jgg.2023.01.003

LI Yuanjing, Shen Andy Hsitien. Fluorescence Characteristic of Fluorite from Namibia[J]. Journal of Gems & Gemmology , 2023, 25(1): 21-27. doi: 10.15964/j.cnki.027jgg.2023.01.003

Citation:

LI Yuanjing, Shen Andy Hsitien. Fluorescence Characteristic of Fluorite from Namibia[J]. Journal of Gems & Gemmology , 2023, 25(1): 21-27. doi: 10.15964/j.cnki.027jgg.2023.01.003

PDF( 10122 KB)

Fluorescence Characteristic of Fluorite from Namibia

doi: 10.15964/j.cnki.027jgg.2023.01.003

LI Yuanjing^{1, 2
,},
Shen Andy Hsitien^{1, 2
,
,}

1.
Gemmological Institute, China University of Geosciences, Wuhan 430074, China
2.
Hubei Gems and Jewelry Engineering Technology Research Center, Wuhan 430074, China

Received Date: 2022-05-06
Publish Date: 2023-01-31

Abstract

Abstract

The fluorite produced in Namibia has special colour zones and prismatic inclusions, and its purple cubic ring structure shows strong blue-purple fluorescence under long-wave UV light (365 nm). In order to study the fluorescence characteristics of fluorite from Namibia, the microscopic observation and photography, inductively coupled plasma mass spectrometer (ICP-MS), laser Raman spectrometer, and fluorescence spectrometer were used. ICP-MS testing results of different colour parts of the fluorite sample showed that the concentration of rare earth elements in the purple part was higher than that in the yellow part. In terms of element types, the concentration of rare earth element Ce and Y was higher, and the purple part concentrates twice as much Ce as the yellow part.Raman spectra showed that besides the characteristic peak of fluorite, there are several unstable spectral peaks indicating the rare earth element Er. Combined the photoluminescence spectra with 3D fluorescence spectra, the results showed the luminescence center of Ce³⁺ with very high intensity existed within the excitation wavelength and emission wavelength (Ex/Em) range 310 nm/320 nm and 310 nm/340 nm. According to the testing results of spectra and trace elements, the characteristic blue-violet fluorescence of the fluorite sample from Namibia is produced by Ce.
- fluorite,
- fluorescence,
- three-dimensional fluorescence spectrum,
- REE,
- Namibia

FullText(HTML)

References(13)

References

[1]	Gaft M, Waychunas G, Rossman G, et al. Red photoluminescence and purple color of naturally irradiated fluorite[J]. Physics Chemistry of Minerals, 2020, 47(11): 1-11.
[2]	Sidike A, Kusachi I, Yamashita N. Natural fluorite emitting yellow fluorescence under UV light[J]. Physics Chemistry of Minerals, 2003, 30(8): 478-485. doi: 10.1007/s00269-003-0341-3
[3]	Gaft M, Reisfeld R, Panczer G. Modern luminescence spectroscopy of minerals and materials[M]. Switzerland: Springer Cham, 2015.
[4]	Czaja M, Bodył-Gajowska S, Lisiecki R, et al. The luminescence properties of rare-earth ions in natural fluorite[J]. Physics Chemistry of Minerals, 2012, 39(8): 639-648. doi: 10.1007/s00269-012-0518-8
[5]	Bill H, Calas G. Color centers, associated rare-earth ions and the origin of coloration in natural fluorites[J]. Physics chemistry of Minerals, 1978, 3(2): 117-131. doi: 10.1007/BF00308116
[6]	Claire I. Fluorite from Namibia[J]. Gems & Gemology, 2011, 47(4): 318-319.
[7]	林传易, 曹俊臣, 张惠芬, 等. 天然萤石的阴极射线发光谱研究[J]. 发光学报, 1992, 13(3): 220-225. doi: 10.3321/j.issn:1000-7032.1992.03.006 Lin C Y, Cao J C, Zhang H F, et al. Cathodoluminescence spectra of natural fluorites[J]. Chinese Journal of Luminescence, 1992, 13(3): 220-225. (in Chinese) doi: 10.3321/j.issn:1000-7032.1992.03.006
[8]	傅平青. 水环境中的溶解有机质及其与金属离子的相互作用——荧光光谱学研究[D]. 北京: 中国科学院研究生院(地球化学研究所), 2004. Fu P Q. Dissolved organic matter in natural aquatic environments and its complexation with metal ions: A study based on fluorescence spectroscopy[D]. Beijing: Chinese Academy of Sciences (GSCAS), 2004. (in Chinese)
[9]	刘小静, 吴晓燕, 齐彩亚, 等. 三维荧光光谱分析技术的应用研究进展[J]. 河北工业科技, 2012, 29(6): 422-425. https://www.cnki.com.cn/Article/CJFDTOTAL-HBGY201206019.htm Liu X J, Wu X Y, Qi C Y, et al. Applications of three-dimensional fluorescent spectroscopy analysis technology[J]. Hebei Journal of Industrial Science and Technology, 2012, 29(6): 422-425. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-HBGY201206019.htm
[10]	刘燕德, 万常斓, 孙旭东, 等. X射线荧光光谱技术在重金属检测中的应用[J]. 激光与红外, 2011, 41(6): 605-611. doi: 10.3969/j.issn.1001-5078.2011.06.002 Liu Y D, Wan C L, Sun X D, et al. Application of X-Ray fluorescence spectrometer techniquein detection of heavy metal[J]. Laser & Infrared, 2011, 41(6): 605-611. (in Chinese) doi: 10.3969/j.issn.1001-5078.2011.06.002
[11]	许金钩, 王尊本. 荧光分析法[M]. 北京: 科学出版社, 2006. Xu J G, Wang Z B. Fluorimetry[M]. Beijing: China Science Publishing & Media Ltd., 2006. (in Chinese)
[12]	Sidike A, Lee K-H, Kusachi I, et al. Photoluminescence properties of a natural fluorite[J]. Journal of Mineralogical and Petrological Sciences, 2000, 95(8): 228-235. doi: 10.2465/jmps.95.228
[13]	Czaja M, Bodył S, Głuchowski P. Luminescence properties of rare earth ions in fluorite, apatite and scheelite minerals[J]. Journal of Alloys and Compounds, 2008, 451(1-2): 290-292. doi: 10.1016/j.jallcom.2007.04.058