Volume 23 Issue 4
Oct.  2021
Turn off MathJax
Article Contents
LIU Jia, YANG Mingxing, LIU Ling. Composition Characteristic of Turquoise from Mongolia[J]. Journal of Gems & Gemmology , 2021, 23(4): 12-19. doi: 10.15964/j.cnki.027jgg.2021.04.002
Citation: LIU Jia, YANG Mingxing, LIU Ling. Composition Characteristic of Turquoise from Mongolia[J]. Journal of Gems & Gemmology , 2021, 23(4): 12-19. doi: 10.15964/j.cnki.027jgg.2021.04.002

Composition Characteristic of Turquoise from Mongolia

doi: 10.15964/j.cnki.027jgg.2021.04.002
  • Received Date: 2021-03-17
  • Publish Date: 2021-07-01
  • The turquoise from Mongolia is rich in colour, ranging from blue to green. To enrich the study on the composition of turquoise from Mongolia, this study determined the contents of main components, trace elements, and rare earth elements(REE) by electron probe microanalysis (EPMA) and laser ablation plasma mass spectrometer (LA-ICP-MS). The content of Al2O3, P2O5, CuO and TFeO were 35.22%-36.73%, 34.34%-35.84%, 8.27%-9.24% and 2.20%-3.76% respectively. The TFeO / CuO ratio of the sample increased with the colour change from blue to green. As the increase of Fe3+ content, the green hue of the sample increases. The content of As was as high as 1 453.9-1 760.3 mg/kg. The EDS scanning showed that As was uniform distributed in the sample substrate. The contents of Sr, Ba, and Pb in the samples were higher than those in Anhui, Shaanxi, and Hubei provinces. The U content was similar to that in turquoise samples from Ma'anshan and Ankang of Anhui Province, and lower than that in Yunyang district and Zhushan area of Hubei Province. There were two different patterns of REE distribution, one was right inclined, and the heavy and light rare earth were differentiated, and Eu loss was not obvious; the other was rich in medium rare earth, and the difference between light and heavy rare earth was relatively insignificant, and Eu showed positive anomaly. According to the difference of distribution curves, it was inferred that there were two stages of mineralization of turquoise, low temperature hydrothermal metasomatism and weathering leaching. The rare earth content of the former was higher than that of the latter, and the light rare earth was enriched, while the latter was lost, but the contents of medium rare earth and heavy rare earth were consistent with the former. The author studied and determined the composition characteristics of turquoise in this area and infers the genesis of turquoise and provided the basis for distinguishing the origin of turquoise from Mongolia.
  • loading
  • [1]
    栾丽君, 韩照信, 王朝友, 等. 绿松石呈色机理初探[J]. 西北地质, 2004, 37(3): 77-82. doi: 10.3969/j.issn.1009-6248.2004.03.013
    罗远飞. 陕西洛南绿松石的宝石矿物学研究[D]. 北京: 中国地质大学, 2017.
    金莉莉. 湖北竹山绿松石颜色成因及水对颜色的影响[D]. 北京: 中国地质大学, 2008.
    沈崇辉, 赵恩全. 安徽省笔架山绿松石矿床矿石矿物特征及矿床成因[J]. 吉林大学学报(地球科学版), 2019, 49(6): 1 591-1 606. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ201906008.htm
    何煦, 陈林, 李青会, 等. 竹山和马鞍山绿松石微量元素和稀土元素特征[J]. 岩矿测试, 2011, 30(6): 709-713. doi: 10.3969/j.issn.0254-5357.2011.06.011
    陈全莉, 王海涛, 刘衔宇, 等. "外蒙料"绿松石的宝石学特征研究[J]. 光谱学与光谱分析, 2020, 40(7): 2 164-2 169. https://www.cnki.com.cn/Article/CJFDTOTAL-GUAN202007035.htm
    周彦, 亓利剑, 戴慧, 等. 安徽殿庵山绿松石的宝石学特征研究[J]. 宝石和宝石学杂志, 2013, 15(4): 37-45. https://www.cnki.com.cn/Article/CJFDTOTAL-BSHB201304007.htm
    刘玲. 中国绿松石颜色的成因、影响因素及分级研究[D]. 武汉: 中国地质大学, 2018.
    张惠芬. 绿松石的某些磁性、光谱特性和颜色的研究[J]. 矿物学报, 1982(4): 16-23. https://www.cnki.com.cn/Article/CJFDTOTAL-KWXB198204003.htm
    Rossi M, Rizzi R, Vergara A, et al. Compositional variation of turquoise group minerals from historical collection of the Real Museo Mineralogico of the University of Naples[J]. Mineralogical Magazine, 2017, 81(6): 1 405-1 429. doi: 10.1180/minmag.2017.081.055
    Masuda A, Nakamura N, Tanaka T. Fine structures of mutually normalized rare-earth patterns of chondrites-science Direct[J]. Geochimica et Cosmochimica Acta, 1973, 37(2): 239-248. doi: 10.1016/0016-7037(73)90131-2
    刘英俊, 曹励明. 元素地球化学导论[M]. 北京: 地质出版社, 1993: 61, 74-76.
    刘申态, 吕新彪, 曹晓峰, 等. 新疆小热泉子铜(锌)矿床硫化物显微结构及稀土、微量元素研究[J]. 地球学报, 2012, 33(2): 197-208. https://www.cnki.com.cn/Article/CJFDTOTAL-DQXB201202012.htm
  • 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 (555) PDF downloads(140) Cited by()
    Proportional views


    DownLoad:  Full-Size Img  PowerPoint