Sedimentary rare earth in the eastern Yunnan and western Guizhou: A new genetic type and potential of development and utilization
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摘要:
研究目的 稀土是重要的自然资源，更是宝贵且关键的战略资源。本文通过对滇东—黔西地区沉积型稀土资源野外地质调查及室内综合研究，揭示了该稀土资源的优势及开发利用潜力，既丰富了全球稀土资源工业类型，又支撑了国家关键稀土资源战略储备。
研究方法 本文基于对含矿地层特征、典型矿石特征、稀土元素配分特征以及稀土资源潜力等方面的研究，探讨该稀土资源的成因类型、稀土元素赋存状态以及开发利用潜力。
研究结果 查明含矿地层为二叠系上统宣威组（P3x）；富稀土矿石的岩性为灰白色铝土质黏土岩和粉砂质黏土岩；其成因属沉积型；在威宁县黑石头—麻乍—哲觉地区，矿体厚度2~18m不等，矿体延伸较连续，稀土氧化物（TREO）含量最高达1.6%，矿体块段稀土（TREO）加权平均品位为0.18%~0.46%，推断资源量超30万t；该稀土资源中“关键稀土元素（CREE）”占比高达22.6%（以∑CREO计），高于国内外大多数正在开发利用的稀土矿；针对该稀土资源研发了“选择性浸出”新工艺，使稀土回收率达90%以上，该稀土资源有望实现规模化工业利用。
结论 该沉积型稀土资源具有矿体厚度大、矿石品位高、资源潜力大、开采成本低、矿石中关键稀土元素（CREO）占比高、开发利用前景好等优点。
Abstract:This paper is the result of mineral exploration engineering.
Objective Rare earth is not only important natural non-renewable resources, but also a key strategic resource. Based on the field geological survey and indoor comprehensive study of sedimentary rare earth resources in the eastern Yunnan and western Guizhou area, this paper reveals the advantages and development and utilization potential of the rare earth resources, which not only enriches the industrial types of the global rare earth resources, but also supports the national strategic reserve of key rare earth resources.
Methods Based on the research on the characteristics of ore-bearing strata, typical ore characteristics, the partition characteristics of rare earth elements and the potential of rare earth resources, this paper discusses the genetic types of the rare earth resources, the occurrence state of rare earth elements and the potential of development and utilization.
Results The ore-bearing stratum is identified as Xuanwei Formation of Upper Permian (P3x); the lithology of rare-earth rich ore is gray- white aluminite claystone and silty claystone; the origin of rare earth ore belongs to sedimentary type; in Weining County Heishitou—Mazha—Zhejue area, the thickness of ore body varies from 2m to 18m, the ore body extension is relatively continuous, the content of rare earth oxide (TREO) is up to 1.6%, the weighted average grade of ore body block (TREO) is 0.18% to 0.46%, and the inferred resource is over 300, 000 tons; the proportion of "Critical rare earth elements (CREE)" in the rare earth resources is up to 22.6% (∑CREO), which is higher than most of the rare earth deposits under development and utilization at domestic and overseas. In addition, the new selective leaching technology is used in the dressing and metallurgy test, and the results indicate that the recovery of rare earth can reach more than 90%. This new type of rare earth mine is expected to realize large-scale industrial utilization.
Conclusions The sedimentary rare earth resource has the advantages of large ore thickness, high ore grade, large resource potential, low mining cost, high proportion of critical rare earth elements (CREO) in ore, and good development and utilization prospect.
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图 1 研究区大地构造位置图（据骆耀南, 1985; 张志斌等, 2006）
Figure 1.
图 6 全岩球粒陨石稀土配分图（据田恩源等, 2020修改；标准化数值据Sun and McDonough, 1989)
Figure 6.
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Dai Chuangu. 2017. Regional Geology of Guizhou Province[M]. Beijing: Geological Publishing House(in Chinese with English abstract).
Dai S F, Zhou Y P, Zhang M Q, Wang X B, Wang J M, Song X L, Jiang Y F, Luo Y B, Song Z T, Yang Z, Ren D Y. 2010. A new type of Nb(Ta)-Zr(Hf)-REE-Ga polymetallic deposit in the late Permian coal-bearing strata, eastern Yunnan, southwestern China: Possible economic significance and genetic implications[J]. International Journal of Coal Geology, 83(1): 55-63. doi: 10.1016/j.coal.2010.04.002
Friedrichs P. 2017. Development of a Rare Earth Element Resource Database Management System[D]. Aachen: Rheinisch-Westfalisch Technische Hochschule Aachen, 165-169.
Ge Zhihua. 2018. Study on the mechanism of rare earth migration in the weathering crust of basaltic rocks in Weining region, Guizhou[D]. Guiyang: Guizhou University, 1-71(in Chinese with English abstract).
He P N, He M Y, Zhang H. 2018. State of rare earth elements in the rare earth deposits of Northwest Guizhou, China[J]. Acta Geochimica, 37(6): 867-874. doi: 10.1007/s11631-018-0278-3
Huang Xunhua. 1997. The Lufang rare earth deposit in Weining, Western Guizhou and its mineralization[J]. Guizhou Geology, (4): 328-333(in Chinese with English abstract).
Information Office of the State Council of the People's Republic of China. 2012. China's Rare Earth Situation and Policy: June 2012[M]. Beijing: People's Publishing House(in Chinese with English abstract).
Long X, Xu Y G, Mei H J, Zheng Y F, He B, Pirajno F. 2004. Distinct mantle sources of low-Ti and high-Ti basalts from the western Emeishan large igneous province, SW China: Implications for plume-lithosphere interaction[J]. Earth and Planetary Science Letters, 228: 525-546. doi: 10.1016/j.epsl.2004.10.002
Luo Yaonan. 1985. Understanding and progress in the study of Panxi Paleorift[J]. Geology in China, (1): 29-35(in Chinese with English abstract).
Mclennan S M. 1993. Weathering and global denudation[J]. Journal of Geology, 101(2): 295-303. doi: 10.1086/648222
Pan Guitang, Xiao Qinghui, Lu Songnian, Deng Jinfu, Feng Yimin, Zhang Kexin, Zhang Zhiyong, Wang Fangguo, Xing Guangfu, Hao Guojie, Feng Yanfang. 2009. Subdivision of tectonic units in China[J]. Geology in China, 36(1): 1-28(in Chinese with English abstract). doi: 10.3969/j.issn.1000-3657.2009.01.001
Schnwandt H K, Barnes G B, Ulrich T. 2016. A description of the world-class rare earth element deposit, Ranbreez, South Greenland[J]. Rare Earths Industry, 73-85.
Sun S S, McDonough W F. 1989. Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes[J]. Geological Society London Special Publications, 42(1): 313-345. doi: 10.1144/GSL.SP.1989.042.01.19
Tian Enyuan, Gong Daxing, Lai Yang, Qiu Xiaolong, Xie Hua, Tian Kangzhi. 2020. Genesis and enrichment of sedimentary rare earth in Weining area, Guizhou Province[J]. Earth Science. (in Chinese with English abstract).
Wang Denghong, Zhao Zhi, Yu Yang, Dai Jingjing, Deng Maochun, Zhao Ting, Liu Lijun. 2018. Exploration and research progress on ion-adsorption type REE deposit in South China[J]. China Geology, 1: 415-424.
Wang Wei. 2008. Study on Permian Basalt Weathering Crust and Enrichment of Rare-earth element in Western Guizhou Province China[D]. Guizhou: Guizhou University (in Chinese with English abstract).
Wen Jun, Zhu Helin, Zhang Jinyuan, Zhang Hangfei, Guo Wenyan, You Xuejun, Zhao Wei, Li Pengcheng, Chen Dongfang. 2021. The first discovery of the paleo-weathering crust-sedimentary Nb and rare earth deposits at the bottom of Xuanwei Formation in the Muchuan area of southern Sichuan[J]. Geology in China, 48(3): 970-971(in Chinese with English abstract).
Weng Z H, Simon J, Gavin M, Nawshad H. 2015. A detailed assessment of global rare earth element resources: Opportunities and challenges[J]. Economic Geology and the Bulletin of the Society of Economic Geologists, 110: 1925-1952. doi: 10.2113/econgeo.110.8.1925
Wu Chengquan, Zhang Zhengwei, Qing Haibo, Yoshio Takahashi, Zhou Lingjie, Xu Jinghong, Li Xiyao, Jin Ziru. 2019. Occurrence and enrichment of rare earth elements in clay rocks of Xuanwei formation in western Guizhou[C]//Abstracts of the 9th National Symposium on metallogenic theory and prospecting methods(in Chinese with English abstract).
Xu Guangxiang. 1995. Rare Earth[M]. Beijing: Metallurgical Industry Press, 1-699(in Chinese with English abstract).
Xu Lu, Li Yuankun, Hui Bo, Qing Jianhua, Dai Zongmin, Gong Daxing. 2020. A selective leaching method of sedimentary rare earth ore[P]. China, 2020-04-24(in Chinese with English abstract).
Xu Y G, Chung S L, Jahn B M, Wu G Y. 2001. Petrologic and geochemical constraints on the petrogenesis of Permian-Triassic Emeishan flood basalts in southwestern China[J]. Lithos, 58(3-4): 145-168. doi: 10.1016/S0024-4937(01)00055-X
Xu Ying, Dai Zongming, Gong Daxing, Hui Bo. 2018. Study on the occurrence state of rare earth elements of rare earth-enriched rocks in the Permian Xuanwei Group in Guizhou Province[J]. Multipurpose Utilization of Mineral Resources, 214(6): 95-99, 106(in Chinese with English abstract).
Yang Ruidong, Wang Wei, Bao Miao, Wang Qiang, Wei Huairui. 2006. Geochemical character of rare earth mineral from the top of Permin basalt, Hezhang County, Guizhou province[C]//National Conference on mineral deposits(in Chinese with English abstract).
Yang R D, Wang W, Zhang X D, Liu L, Wei H R, Bao M, Wang J X. 2008. A new type of rare earth elements deposit in weathering crust of Permian basalt in western Guizhou, NW China[J]. Journal of Rare Earths, 26(5): 753-759. doi: 10.1016/S1002-0721(08)60177-5
Zhang Hai. 2014. Geological and Geochemical Characteristics and Metallogenic Mechanism of REE Deposits, Northwestern Guizhou[D]. Chengdu: Chengdu University of Technology, 1-130(in Chinese with English abstract).
Zhang Zheng, Dai Chaohui. 2010. Rare earth ore and metallogenic geological characteristics in Guizhou[J]. Mineral resources and geology, (5): 433-439(in Chinese with English abstract). doi: 10.3969/j.issn.1001-5663.2010.05.010
Zhang Zhibin, Li Chaoyang, Tu Guangchi, Xia Bing, Wei Zhenquan. 2006. Geotectonic evolution background and ore-forming process of Pb-Zn deposits in Chuan-Dian-Qian area of Southwest China[J]. Geotectonica et Mettallogenia, 30(3): 343-354(in Chinese with English abstract).
Zhang Z W, Yang X Y, Li S, Zhang Z S. 2010. Geochemical characteristics of the Xuanwei Formation in West Guizhou: Significance of sedimentary environment and mineralization[J]. Chinese Journal of Geochemistry, 29(4): 355-364. doi: 10.1007/s11631-010-0467-1
Zhang Z W, Zheng G D, Takahashi Y, Wu C Q, Zheng C F, Yao J H, Xiao C Y. 2016. Extreme enrichment of rare earth elements in hard clay rocks and its potential as a resource[J]. Ore Geology Reviews, 72: 191-212. doi: 10.1016/j.oregeorev.2015.07.018
Zhao L X, Dai S F, Graham I T, Li X, Zhang B B. 2016. New insights into the lowest Xuanwei Formation in eastern Yunnan Province, SW China: Implications for Emeishan large igneous province felsic tuff deposition and the cause of the end-Guadalupian mass extinction[J]. Lithos, 264: 375-391. doi: 10.1016/j.lithos.2016.08.037
Zhao L X, Dai S F, Graham I T, Li X, Liu H D, Song X L, Hower J C, Zhou Y P. 2017. Cryptic sediment-hosted critical metal mineralization from eastern Yunnan Province, southwestern China: mineralogy, geochemistry, relationship to Emeishan alkaline magmatism and possible origin[J]. Ore Geology Reviews, 80: 116-140. doi: 10.1016/j.oregeorev.2016.06.014
Zhou L J, Zhang Z W, Li Y J, You F H, Wu C Q, Zheng C F. 2013. Geological and geochemical characteristics in the paleo-weathering crust sedimentary type REE deposits, western Guizhou, China[J]. Journal of Asian Earth Sciences, 73: 184-198. doi: 10.1016/j.jseaes.2013.04.011
Zhou Lingjie. 2012. Geological and Geochemical Characteristics of Sedimentary Kaolinite Clay Rare Earth Deposits in Western Guizhou[D]. Guizhou: Institute of geochemistry, Chinese Academy of Sciences, 1-81(in Chinese with English abstract).
Zhou M F, Malpas J, Song X Y, Robinson P T, Sun M, Kennedy A, Lesher M, Keays R R. 2002. A temporal link between the Emeishan large igneous province (SW China) and the end-Guadalupian mass extinction[J]. Earth and Planetary Science Letters, 196: 113-122. doi: 10.1016/S0012-821X(01)00608-2
《Mineral resources industry requirements Manual》 Editorial Committee. 2014. Mineral Resources Industry Requirements Manual[M]. Beijing: Geological Publishing House(in Chinese with English abstract).
戴传固. 2017. 贵州省区域地质志[M]. 北京: 地质出版社, 1-1153.
葛枝华. 2018. 威宁地区玄武岩风化壳中稀土迁移富集机制研究[D]. 贵阳: 贵州大学, 1-71.
黄训华. 1997. 威宁鹿房稀土矿地质特征及成矿作用初步分析[J]. 贵州地质, (4): 328-333. https://www.cnki.com.cn/Article/CJFDTOTAL-GZDZ199704007.htm
骆耀南. 1985. 攀西古裂谷研究中的认识和进展[J]. 中国地质, (1): 29-35. http://geochina.cgs.gov.cn/geochina/article/abstract/DIZI198501009?st=search
潘桂棠, 肖庆辉, 陆松年, 邓晋福, 冯益民, 张克信, 张智勇, 王方国, 邢光福, 郝国杰, 冯艳芳. 2009. 中国大地构造单元划分[J]. 中国地质, 36(1): 1-28. http://geochina.cgs.gov.cn/geochina/article/abstract/20090101?st=search
田恩源, 龚大兴, 赖杨, 邱小龙, 谢华, 田康志. 2020. 贵州威宁地区沉积型稀土含矿岩系成因与富集规律[J]. 地球科学(网络首发).
王伟. 2008. 贵州西部二叠系玄武岩风化壳及其中稀土富集规律研究[D]. 贵阳: 贵州大学, 1-67.
文俊, 竹合林, 张金元, 张航飞, 郭文彦, 游学军, 赵伟, 李鹏程, 陈东方. 2021. 川南沐川地区首次发现宣威组底部古风化壳-沉积型铌、稀土矿[J]. 中国地质, 48(3): 970-971. http://geochina.cgs.gov.cn/geochina/article/abstract/20210327?st=search
吴承泉, 张正伟, 秦海波, Yoshio, Takahashi, 周灵洁, 徐进鸿, 李溪遥, 靳子茹. 2019. 贵州西部宣威组黏土岩稀土元素赋存状态和富集规律[C]//第九届全国成矿理论与找矿方法学术讨论会论文摘要集.
徐光宪. 1995. 稀土[M]. 北京: 冶金工业出版社, 1-699.
徐璐, 李元坤, 惠博, 秦建华, 戴宗明, 龚大兴. 2020. 一种选择性浸出沉积型稀土矿的方法[P]. 中国, CN 109266839 B. 2020-04-24.
徐莺, 戴宗明, 龚大兴, 惠博. 2018. 贵州某地二叠系宣威组富稀土岩系稀土元素赋存状态研究[J]. 矿产综合利用, 214(6): 95-99, 106. https://www.cnki.com.cn/Article/CJFDTOTAL-KCZL201806018.htm
杨瑞东, 王伟, 鲍淼, 王强, 魏怀瑞. 2006. 贵州赫章二叠系玄武岩顶部稀土矿床地球化学特征[C]. 全国矿床会议.
张海. 2014. 黔西北地区稀土矿床地质地球化学特征及其成矿机制研究[D]. 成都: 成都理工大, 1-130.
张震, 戴朝辉. 2010. 贵州稀土矿及成矿地质特征[J]. 矿产与地质, (5): 433-439. https://www.cnki.com.cn/Article/CJFDTOTAL-KCYD201005010.htm
张志斌, 李朝阳, 涂光帜, 夏斌, 韦振权. 2006. 川、滇、黔接壤地区铅锌矿床产出的大地构造演化背景及成矿作用[J]. 大地构造与成矿学, 30(3): 343-354. https://www.cnki.com.cn/Article/CJFDTOTAL-DGYK200603009.htm
中华人民共和国国务院新闻办公室. 2012. 中国的稀土状况与政策: 2012年6月[M]. 北京: 人民出版社, 2012年6月.
周灵洁. 2012. 贵州西部沉积型高岭石质黏土岩稀土矿床的地质和地球化学特征[D]. 贵阳: 中国科学院地球化学研究所, 1-81.
《矿产资源工业要求手册》编委会. 2014. 矿产资源工业要求手册[M]. 北京: 地质出版社.
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