Journal of Jilin University(Earth Science Edition) ›› 2020, Vol. 50 ›› Issue (1): 85-96.doi: 10.13278/j.cnki.jjuese.20180217

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Geological Characteristics and Genetic Analysis of Xiengkhor Magnesite in Houaphanh Province, Laos

Zhang Zijun1, Ao Cong2, Yan Chengmin3, Yang Yu1, Lang Weixiong1, Hong Xinke1, Du Lei1, Li Xinren1   

  1. 1. No. 209 Geological Party, Geological Bureau of Yunnan Nuclear Industry, Kunming 650032, China;
    2. Tianjin Center, China Geological Survey, Tianjin 300170, China;
    3. Yunnan Bureau of Geology and Mineral Resources Regional Geological and Mineral Investigation Brigade, Yuxi 653100, Yunnan, China
  • Received:2018-08-20 Published:2020-02-11
  • Supported by:
    Supported by Yunnan High-Tech Industry Development Project(201704) and Overseas Commercial Geological Exploration Project(K20180512)

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Abstract: Through a field research,some new understandings have been obtained on the geology,ore body characteristics,surrounding rocks and rocks,ore characteristics, and mineral genesis of the Xiengkhor magnesite in Houaphanh Province,Laos. The exposed strata in the mining area are Lower Paleozoic (Pz1),Middle Carboniferous-Upper Carboniferous(C2-3),and Quaternary river secondary terrace deposits (QpⅡal). The main structure is a northwestward reverse fault and four northeast shift faults. The ore bodies are produced in the strong tectonic deformation zone on the southwest side of the reverse fault, and they are vein-like with the thickness of several millimeters,several centimeters, or ten centimeters. A total of ten ore bodies are circled. The surrounding rock of the ore body is the same as the rock type included in the ore body. It is a shallow metamorphic terrigenous clastic rock with high silicon(SiO2=81.190%),low magnesium(MgO=0.781%),and rich iron (Fe2O3=11.716%,FeO=1.719%). The ore mineral is magnesite,and the gangue minerals are mainly quartz,phlogopite,dolomite,sericite, and limonite. It is inferred that the Xiengkhor magnesite was formed during the closure of the Middle Triassic-Late Triassic Paleo-Tethys ocean:The magnesia precipitated from the ultramafic rocks and formed the ore-bearing hydrothermal fluid; after enrichment,reticular magnesite was formed in the strong tectonic deformation zone. The genetic type of the Xiengkhor magnesite belongs to the Laoxieng-type crystalline magnesite hydrothermal deposit in shallow metamorphic clastic rocks. The metallogenic age is in Middle Triassic-Late Triassic.

Key words: Xiengkhor magnesite, mining area geology, ore body characteristics, surrounding rock and stone, deposit genesis, hydrothermal deposit, Houaphanh Province,Laos

CLC Number: 

  • P611
[1] 申旭,马树洪. 当代老挝[M]. 成都:四川人民出版社,1992:1-32. Shen Xu,Ma Shuhong. Contemporary Laos[M]. Chengdu:Sichuan People's Publishing House,1992:1-32.
[2] 马树洪,方芸. 列国志:老挝[M]. 北京:社会科学文献出版社,2004:1-22. Ma Shuhong,Fang Yun. Guide to the World States:Laos[M]. Beijing:Social Sciences Academic Press,2004:1-22.
[3] 谢维城. 论云南地貌体系[J]. 云南地理环境研究,1998,10(增刊):47-55. Xie Weicheng. On the Yunnan Geomorphology System[J]. Yunnan Geography and Environment Research,1998,10(Sup.):47-55.
[4] 朱延浙,吴军,胡建军,等. 老挝地质矿产概论[M]. 昆明:云南科技出版社,2009:20-72. Zhu Yanzhe, Wu Jun,Hu Jianjun,et al. Introduction to Laos Geology and Minerals[M]. Kunming:Yunnan Science and Technology Press,2009:20-72.
[5] 任纪舜,王作勋,陈炳蔚,等. 从全球看中国大地构造[M]. 北京:地质出版社,1999:4-50. Ren Jishun,Wang Zuoxun,Chen Bingwei,et al. China's Geodetic Structure from a Global Perspective[M]. Beijing:Geological Publishing House,1999:4-50.
[6] 李景春,徐庆国,庞庆邦. 老挝人民民主共和国地质矿产概况[J]. 贵金属地质,2000,9(4):235-239. Li Jingchun,Xu Qingguo,Pang Qingbang. The Outline of Geology and Mineral Resources of the Laos[J]. Journal of Precious Metallic Geology,2000,9(4):235-239.
[7] 云南省地质矿产局. 云南省区域地质志[M]. 北京:地质出版社,1990:572-597. Yunnan Bureau of Geology and Mineral Resources. Regional Geology of Yunnan Province[M]. Beijing:Geological Publishing House,1990:572-597.
[8] 王义昭,李兴林,段丽兰,等. 三江地区南段大地构造与成矿[M]. 北京:地质出版社,2000:4-50. Wang Yizhao,Li Xinglin,Duan Lilan,et al. Dadi Structure and Mineralization in the Southern Part of the Sanjiang Area[M]. Beijing:Geological Publishing House,2000:4-50.
[9] 李兴振,江新胜,孙志明,等. 西南三江地区碰撞造山过程[M]. 北京:地质出版社,2002:148-174. Li Xingzhen,Jiang Xinsheng,Sun Zhiming,et al. Collision Orogenic Process in the Sanjiang Area,Southwest China[M]. Beijing:Geological Publishing House,2002:148-174.
[10] 李兴振,刘朝基,丁俊. 大湄公河次地区主要结合带的对比与连接[J]. 沉积与特提斯地质,2004,24(4):1-12. Li Xingzhen,Liu Chaoji,Ding Jun. Comparison and Connection of Main Binding Zones in the Greater Mekong Subregion[J]. Sedimentary and Tethyan Geology,2004,24(4):1-12.
[11] 李兴振,刘朝基,丁俊. 大湄公河次地区构造单元划分[J]. 沉积与特提斯地质,2004,24(4):13-20. Li Xingzhen,Liu Chaoji,Ding Jun. Division of the Tectonic Units in the Greater Mekong Subregion[J]. Sedimentary Geology and Tethyan Geology,2004,24(4):13-20.
[12] 程裕淇. 中国区域地质概论[M]. 北京:地质出版社,1994:239-312. Cheng Yuqi. Introduction to Regional Geology in China[M]. Beijing:Geological Publishing House,1994:239-312.
[13] 潘桂棠,肖庆辉,陆松年,等. 中国大地构造单元划分[J]. 中国地质,2009,36(1):1-28. Pan Guitang,Xiao Qinghui,Lu Songnian,et al. Division of Tectonic Units in China[J]. Chinese Geology,2009,36(1):1-28.
[14] 王泽传,朱延浙,严城民,等. 云南地史与特提斯构造演化[M]. 昆明:云南科技出版社,2017:9-47. Wang Zechuan,Zhu Yanzhe,Yan Chengmin,et al. Yunnan Geography and Tethys Tectonic Evolution[M]. Kunming:Yunnan Science and Technology Press,2017:9-47.
[15] 亚洲地质图编图组. 亚洲地质[M]. 北京:地质出版社,1982:9-158. Asian Geological Maps Group. Asian Geology[M]. Beijing:Geological Publishing House,1982:9-158.
[16] 第三届全国地层会议. 中国区域年代地层(地质年代)表[J]. 地层学杂志,2001,25(增刊):359-361. The Third National Stratigraphic Conference. China's Regional Chronostratigraphy(Geological Age) Table[J]. Journal of Stratigraphy,2001,25(Sup.):359-361.
[17] 第四届全国地层会议. 中国地层表[J]. 地球学报,2014,35(3):271-276. The Fourth National Stratigraphic Conference. China Stratigraphic Table[J]. Acta Geoscientica Sinica,2014,35(3):271-276.
[18] 矿产资源工业要求手册编委会. 矿产资源工业要求手册[K]. 北京:地质出版社,2010:218-223. Mineral Resources Industry Requirements Manual Editorial Board. Mineral Resources Industry Requirements Handbook[K]. Beijing:Geological Publishing House,2010:218-223.
[19] 韩吟文,马振东. 地球化学[M]. 北京:地质出版社,2005:353-370. Han Yinwen,Ma Zhendong. Geochemistry[M]. Beijing:Geological Publishing House,2005:353-370.
[20] 朱筱敏. 沉积岩石学[M]. 北京:石油工业出版社,2001:10-48. Zhu Xiaomin. Sedimentary Petrology[M]. Beijing:Petroleum Industry Press,2001:10-48.
[21] 铝土矿、冶镁菱镁矿地质勘查规范:DZ/T 0202-2002[S]. 北京:地质出版社,2002:1-31. Geological Exploration Specifications for Bauxite and Smelting Magnesite:DZ/T 0202-2002[S]. Beijing:Geological Publishing House,2002:1-31.
[22] 王翠芝. 山东莱州菱镁矿地质特征及成因分析[J]. 地质与勘探,1997,33(5):16-20. Wang Cuizhi. Geological Characteristics and Genesis Analysis of Laiwu Magnesite in Shandong Province[J]. Geology and Prospecting,1997,33(5):16-20.
[23] 薛建平,董明明,李成元. 内蒙古索伦山菱镁矿成矿地质条件与找矿潜力分析[J]. 地质与勘探,2017,53(3):464-471. Xue Jianping,Dong Mingming,Li Chengyuan. Metallogenic Geological Conditions and Prospecting Potential of the Solonker Magnesite Deposit in Inner Mongolia[J]. Geology and Exploration,2017,53(3):464-471.
[24] 丁建华,陈正海,杨国俊,等. 中国菱镁矿成矿规律及资源潜力分析[J]. 中国地质,2013,40(6):1699-1711. Ding Jianhua,Chen Zhenghai,Yang Guojun,et al. Metallogeny and Resource Potential of Magnesite Deposits in China[J]. Geology in China,2013,40(6):1699-1711.
[25] 赵正,白鸽,王登红,等. 中国成菱镁矿区带与关键科学问题[J]. 地质学报,2014,88(12):2326-2338. Zhao Zheng,Bai Ge,Wang Denghong,et al. The Metallogenic Belts of Chinese Magnesite Deposits and Key Scientific Issues[J]. Acta Geologica Sinica,2014,88(12):2326-2338.
[26] 云南省地质矿产局. 云南省岩石地层[M]. 武汉:中国地质大学出版社,1996:320-366. Yunnan Bureau of Geology and Mineral Resources. Rock Formations in Yunnan Province[M]. Wuhan:China University of Geosciences Press,1996:320-366.
[27] 姚凤良,孙丰月. 矿床学教程[M]. 北京:地质出版社,2006:213-254. Yao Fengliang,Sun Fengyue. Minerals Tutorial[M]. Beijing:Geological Publishing House,2006:213-254.
[28] 铜、铅、锌、银、镍、钼矿地质勘查规范:DZ/T 0214-2002[S]. 北京:地质出版社,2002:1-14. Geological Exploration Specifications for Copper,Lead,Zinc,Silver,Nickel and Molybdenum Deposits:DZ/T 0214-2002[S]. Beijing:Geological Publishing House,2002:1-14.
[29] 刘书生,范文玉,罗茂金,等. 老挝南部帕莱通双峰式火山岩锆石U-Pb定年及岩石地球化学特征[J]. 吉林大学学报(地球科学版),2014,44(2):540-553. Liu Shusheng,Fan Wenyu,Luo Maojin,et al. Zircon U-Pb Dating and Geochemistry Characteristics of the Bimodal Volcanic Rocks in Phlaythong Area,Southern Laos[J]. Journal of Jilin University(Earth Science Edition),2014,44(2):540-553.
[30] 朱华平,范文玉,毛洪江,等. 老挝万象省爬立山(PHaLek)铁矿床地质特征及成矿作用分析[J]. 吉林大学学报(地球科学版),2014,44(5):1492-1501. Zhu Huaping,Fan Wenyu,Mao Hongjiang,et al. Geological Characteristics and Metallogenesis of the PHaLek Iron Deposit in Vientiane Province,Laos[J]. Journal of Jilin University(Earth Science Edition),2014,44(5):1492-1501.
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