拉曼Mapping研究霓石型稀土独居石矿物分布特征和取向相位

doi:10.3964/j.issn.1000-0593(2023)04-1183-09

Abstract
References
Related Citation (15)

Download: PDF (42195 KB)
Export: BibTeX | EndNote (RIS)

Abstract The automated analysis technique has gradually replaced the traditional optical observation method in the geoscience fields. However, mineral phase maps obtained from these newer approaches are overly dependent on transforming from elemental to mineralogical compositions. And then, the important pieces of information are destroyed with a complete description of the origin and history of mineral materials. Therefore, using appropriate detection means to analyze the mineralization and genesis which have important implications for mineral mineralization. Here, through comparison with the Raman Mapping, optical microscope, and TMSCAN integrated mineral analyzer for SEM (TIMA), the distribution characteristics, chemical composition, mineral structure, and crystal orientation are studied of typical aegirine rare earth minerals. The results show monazite grains are mostly euhedral-semieuhedral unequal grain structures and fine particle sizes of 100～500 μm. Some particles were metasomatized by phosphorus solution indicating that the deep monazite minerals formed multi-stage mineralization. Bastnaesite minerals are fine-grained and particles are distributed and wrapped irregularly. Aeschynite minerals aggregate clumps or radial forms in irregular. It has obvious directivity that the formation time is consistent with calcite. The ratio of peak area of P—O symmetric stretching mode (ν₁) and P—O symmetric bending vibration mode (ν₂) is obtained by Raman Mapping data analysis, in which the different growth orientations phase diagrams were obtained of [PO₄]^3- monazite minerals in micro areas. Combined with the light microscopic characteristics of monazite. It is proved that monazite mineral has at least three stages of mineralization. The discovery also provides strong evidence for the multi-stage mineralization of the Bayan Obo deposit. In addition, as a fast image method to judge different growth orientations of phosphate, carbonate, and sulfate minerals. It can provide important evidence for judging the fact of multi-stage mineralization for various mineral types. The application of Raman Mapping technology in mineralogy lays the foundation for mineral occurrence characteristics.

Key words：Bayan Obo deposit; Phosphate; Monazite; Raman Mapping; Crystal orientation

Received: 2022-02-13 Accepted: 2022-06-22

ZTFLH:

P575.4

Corresponding Authors: OUYANG Shun-li, ZHANG Jin-shan E-mail: ouyangshunli01@163.com；bt-jinshan@163.Net

Cite this article:

ZHANG Tie-zhu,LI Yu,ZHANG Yu-xuan, et al. The Crystal Orientation Maps and Distribution of Mnoazite Minerals in Aegirine-Type Ores in Bayan Obo: Constraints From Raman Mapping[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(04): 1183-1191.

URL:

https://www.gpxygpfx.com/EN/10.3964/j.issn.1000-0593(2023)04-1183-09 OR https://www.gpxygpfx.com/EN/Y2023/V43/I04/1183

[1] Lao Xiaodong, Yang Xiaoyong, Santosh M, et al. Precambrian Research, 2015, 263: 108.
[2] ZHANG Tie-zhu, ZHANG Yu-xuan, LIU Sai-yu, et al(张铁柱, 张宇轩, 刘赛余, 等). Spectroscopy and Spectral Analysis（光谱学与光谱分析）, 2021, 41(12)：3776.
[3] Sun Jian, Zhu Xiangkun, Chen Yuelong, et al. Precambrian Research, 2013, 235：88.
[4] Yang Xiaoyong, Lai Xiaodong, Franco Pirajno, et al. Precambrian Research, 2017, 288: 39.
[5] Fan Hongrui, Yang Kuifang, Hu Fangfang, et al. Geoscience Frontiers, 2016, 7: 335.
[6] WANG Wei-wei, YANG Zhan-feng, WANG Zhen-jiang, et al（王维维, 杨占峰, 王振江, 等）. Journal of Chinese Society of Rare Earths（中国稀土学报）, 2021, 39（2）: 317.
[7] JIN Hai-long, YANG Zhan-feng, WANG Qi-wei, et al（金海龙, 杨占峰, 王其伟, 等）. Journal of the Chinese Society of Rare Earths（中国稀土学报）, 2020, 38（6）: 840.
[8] Münch B, Martin L H J, et al. Journal of Microscopy 2015, 260: 411.
[9] Huang Xiaowen, Zhuo Qiu Meifu, et al. Ore Geology Reviews, 2015, 65: 884.
[10] Fries M，Steele A. Springer Series in Surface Sciences. Springer International Publishing, 2018. 66.
[11] Krishna C Polavaram, Nishant Garg. Scientific Reports, 2021, 11: 8022.
[12] XIE Yu-ling, QU Yun-wei, YANG Zhan-feng, et al(谢玉玲，曲云伟，杨占峰, 等). Mineral Deposits（矿床地质）, 2019, 38(5): 983.
[13] Zhong Xin, Arianne J Petley-Ragan, Sarah H M Incel, et al. Nature Geoscience, 2021，14：519.
[14] FAN Hong-rui, TAO Ke-jie, XIE Yi-han, et al（范宏瑞, 陶克捷, 谢奕汉, 等）. Acta Petrologica Sinica（岩石学报）, 2003，19（1）：69.
[15] Deer W A, et al. Mineralogical Magazine，1965, 34(268): 177.
[16] Yang Kuifeng, Fan Hongrui, Santosh M, et al. Ore Geology Reviews, 2011, 40: 122.
[17] Ling Mingxing, Liu Yulong, Ian S Williams, et al. Scientific Reports, 2013, 3: 1776.
[18] Yang Kuifeng, Fan Hongrui, France Pirajno, et al. Geology, 2019, 47, (12): 1198.