Volume 25 Issue 3
May  2023
Turn off MathJax
Article Contents
ZHANG Longbo, LIN Bihan, WAN Shuiyun, CHEN Tao, ZHANG Qian. Gemmological and Spectral Characteristics of Pink Garnet from Mogok, Myanmar[J]. Journal of Gems & Gemmology , 2023, 25(3): 16-21. doi: 10.15964/j.cnki.027jgg.2023.03.003
Citation: ZHANG Longbo, LIN Bihan, WAN Shuiyun, CHEN Tao, ZHANG Qian. Gemmological and Spectral Characteristics of Pink Garnet from Mogok, Myanmar[J]. Journal of Gems & Gemmology , 2023, 25(3): 16-21. doi: 10.15964/j.cnki.027jgg.2023.03.003

Gemmological and Spectral Characteristics of Pink Garnet from Mogok, Myanmar

doi: 10.15964/j.cnki.027jgg.2023.03.003
  • Received Date: 2022-11-01
  • Publish Date: 2023-05-31
  • In this paper, 2 pink garnet samples from Mogok, Myanmar were studied by electron microprobe, laser ablation inductively coupled plasma mass spectrometer(LA-ICP-MS), Raman spectrometer, infrared spectrometer and ultraviolet-visible spectrometer and other conventional gemmological tests. Infrared and Raman spectra results indicated that they are close to the grossular endmember. The chemical composition of the samples was tested by electron microprobe. The result also demonstrated that the 2 samples are close to the endmember of grossular. The average chemical structure formulas of the samples G1 and G2 are Ca3.08(Al1.84Ti0.06Fe0.01Mg0.01)1.92[(Si2.90Al0.10)3.00O12]and Ca3.06(Al1.84Ti0.08Fe0.01Mg0.01)1.94[(Si2.91Al0.09)3.00O12], respectively. The test result of LA-ICP-MS showed that both samples contain trace elements such as Ti, Fe, Zr, Mn, Nb, Ga and Sn. The content of Ti in the samples, ranging from 5 444 to 10 035 ppm, is higher than that in raspberry-red grossular from Mexico, while the content of Mn is lower, only 47 to 132 ppm. Ultraviolet-visible spectra analysis revealed that the samples G1 and G2 have absorption bands at 489 nm and 495 nm, respectively. There is an absorption broad band centered at 550 nm in both samples. Combined with the trace elements in the samples and the previous research about the role of Mn in garnet and other silicates, it is believed that the absorption broad bands are related to Mn3+, which means their colour is probably due to the presence of small amounts of Mn3+.
  • loading
  • [1]
    李娅莉, 薛秦芳, 李立平, 等. 宝石学教程[M]. 武汉: 中国地质大学出版社, 2006.

    Li Y L, Xue Q F, Li L P, et al. Gemology[M]. Wuhan: China University of Geosciences Press, 2006. (in Chinese)
    Chen S, Chen Y, Li Y B, et al. Cenozoic ultrahigh-temperature metamorphism in pelitic granulites from the Mogok metamorphic belt, Myanmar[J]. Science China Earth Sciences, 64(11): 1 873-1 892. doi: 10.1007/s11430-020-9748-5
    雍晨颖. 墨西哥草莓红钙铝榴石的宝石矿物学特征研究[D]. 北京: 中国地质大学, 2019.

    Yong C Y. Study on the gemological and mineralogical characteristic of strawberry-red grossular garnet in Mexico[D]. Beijing: China University of Geosciences, 2019. (in Chinese)
    Geiger C A, Stahl A, Rossman G R. Raspberry-red grossular from Sierra de Cruces Range, Coahuila, Mexico[J]. European Journal of Mineralogy, 1999, 11(6): 1 109-1 113. doi: 10.1127/ejm/11/6/1109
    Krzemnicki M S. Pink grossular garnet from Mogok[J]. Facette Magazine, 2020(26): 26.
    何谋春, 洪斌, 吕新彪. 钙铝榴石-钙铁榴石的拉曼光谱特征[J]. 光散射学报, 2002, 14(2): 121-126. https://www.cnki.com.cn/Article/CJFDTOTAL-GSSX200202013.htm

    He M C, Hong B, Lyu X B. The feature of Raman spectra of grossular-andradite[J]. Chinese Journal of Light Scattering, 2002, 14(2): 121-126. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GSSX200202013.htm
    Peng M S, Mao H K, Li D E, et al. Raman spectroscopy of garnet-group minerals[J]. Chinese Journal of Geochemistry, 1994, 13(2): 176-183. doi: 10.1007/BF02838517
    范建良, 刘学良, 郭守国, 等. 石榴石族宝石的拉曼光谱研究及鉴别[J]. 应用激光, 2007, 27(4): 299, 310-313. https://www.cnki.com.cn/Article/CJFDTOTAL-YYJG200704010.htm

    Fan J L, Liu X L, Guo S G, et al. Study on Raman spectra of garnets and relative identification[J]. Applied Laser, 2007, 27(4): 299, 310-313. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YYJG200704010.htm
    Hofmeister A M, Chopelas A. Vibrational spectroscopy of end-member silicate garnets[J]. Physics and Chemistry of Minerals, 1991, 17(6): 503-526.
    Slack G A, Chrenko R M. Optical absorption of natural garnets from 1000 to 3 0000 wavenumbers[J]. Journal of the Optical Society of America, 1971, 61(10): 1 325-1 329. doi: 10.1364/JOSA.61.001325
    Vigier M, Fritsch E. Pink axinite from Merelani, Tanzania: Origin of colour and luminescence[J]. The Journal of Gemmology, 2020, 37(2): 192-205. doi: 10.15506/JoG.2020.37.2.192
    Blumentritt F, Fritsch E. Photochromism and photochromic gems: A review and some new data (part Ⅰ)[J]. Journal of Gemmology, 2021, 37(8): 780-800. doi: 10.15506/JoG.2021.37.8.780
    Gilles-Guery L, Galoisy L, Schnellrath J, et al. Mn3+ and the pink color of gem-quality euclase from northeast Brazil[J]. American Mineralogist, 2022, 107(3): 489-494. doi: 10.2138/am-2021-7838
    Rossman G R. Optical spectroscopy[J]. Reviews in Mineralogy and Geochemistry, 2014, 78(1): 371-398. doi: 10.2138/rmg.2014.78.9
    Burns R G, Burns R G. Mineralogical applications of crystal field theory[M]. Cambridge: Cambridge University Press, 1993.
  • 加载中


    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (67) PDF downloads(12) Cited by()
    Proportional views


    DownLoad:  Full-Size Img  PowerPoint