湖南桃江县木瓜园钨矿床地质特征及含矿岩体成岩时代

doi:10.13278/j.cnki.jjuese.20180089

摘要/Abstract

摘要： 木瓜园钨矿床是近几年在江南古陆成矿带中新发现的大型白钨矿床。该矿床产于三仙坝花岗斑岩中，白钨矿化主要类型有浸染状、细脉状和网脉状，成矿围岩蚀变类型有钾化、硅化、绢云母化、黄铁矿化和碳酸盐化等，具有斑岩型矿床的矿化和围岩蚀变特征。由于是最新发现，该矿床的矿床地质特征及成岩成矿年龄研究较少，因此笔者选取了与成矿关系密切的三仙坝花岗闪长斑岩和石英斑岩以及不同矿化类型的辉钼矿样品进行Re-Os同位素定年，获得三仙坝花岗闪长斑岩的形成时代为（222±1）Ma，石英斑岩的形成时代为（219±3）Ma，辉钼矿Re-Os模式年龄为228~223 Ma，加权平均值为226 Ma，等时线年龄为（220±21）Ma，该年龄与加权平均年龄一致，表明该矿床形成于晚三叠世。辉钼矿中w（Re）的分布范围为（70~181）×10^-6，平均为112×10^-6，反映其可能为壳幔混合来源。其形成环境为印支晚期后碰撞环境。

关键词: 木瓜园钨矿床, Re-Os同位素定年, 矿床地质特征, 含矿岩体, 湖南

Abstract: The Muguayuan W deposit in Taojiang County of Hunan Province is a newly discovered large W deposit in the west part of the Jiangnan massif, which is hosted in the Sanxianba granite porphyry. The main ore-forming types include disseminated, veinlet, and reticular types.The major alteration types of wall rocks are comprise of potassium alteration, silicification, sericitization, pyritization, and carbonation etc., typical alteration characteristics of porphyry W deposits. The different mineralizing types of molybdenum-bearing samples were selected for precise Re-Os dating, and the model ages are from 228 to 223 Ma, indicating that the deposit was formed in the Late Triassic. The Re content of molybdenite is (70-181)×10^-6, indicating that they were derived from mixed crust and mantle sources. The metallogenic environment was the post collision in the period of Late Indosinian.

Key words: Muguayuan tungsten deposit, Re-Os dating, geological features of ore deposit, ore-bearing rock body, Hunan Province

中图分类号:

P618.67

李洪英, 杨磊, 陈剑锋. 湖南桃江县木瓜园钨矿床地质特征及含矿岩体成岩时代[J]. 吉林大学学报(地球科学版), 2019, 49(5): 1285-1300.

Li Hongying, Yang Lei, Chen Jianfeng. Geological Characteristics and Diagenetic Age of Ore-Bearing Rock of Taojiang Muguayuan Tungsten Deposit in Hunan Province[J]. Journal of Jilin University(Earth Science Edition), 2019, 49(5): 1285-1300.

参考文献

[1] Song G X, Qin K Z, Li G M, et al. Geochronologic and Isotope Geochemical Constraints on Magmatism and Associated W-Mo Mineralization of the Jitoushan W-Mo Deposit, Middle-Lower Yangtze Valley[J]. International Geology Review, 2012,54:1532-1547.
[2] Mao Z H, Cheng Y B, Liu J J, et al. Geology and Molybdenite Re-Os Age of the Dahutang Granite-Related Veinlets-Disseminated Tungsten Ore Field in the Jiangxi Province, China[J]. Ore Geology Reviews, 2013,53:422-433.
[3] Mao J W, Pirajno P, Lehmann B, et al. Distribution of Porphyry Deposits in the Eurasian Continent and Their Corresponding Tectonic Settings[J]. Journal of Asian Earth Sciences, 2014,79:576-584.
[4] Mao J W,Pirajno F, Nigel C N. Mesozoic Metallogeny in East China and Corresponding Geodynamic Settings:An Introduction to the Special Issue[J]. Ore Geology Reviews, 2011, 43:1-7.
[5] 项新葵, 汪石林, 詹国年,等.赣北石门寺矿区钨多金属矿床成矿地质条件[J]. 地质找矿论丛,2012,27(2):143-155. Xiang Xinkui, Wang Shilin, Zhan Guonian, et al. Metallogenic Geological Conditions of Shimensi Tungsten-Polymetallic Deposit in North Jiangxi Province[J]. Contributions to Geology and Mineral Resources Research, 2012, 27(2):143-155.
[6] 项新葵,王朋,詹国年,等.赣北石门寺超大型钨多金属矿床地质特征[J]. 矿床地质, 2013,32(6):1171-1187. Xiang Xinkui, Wang Peng, Zhan Guonian, et al. Geological Characteris of Shimensi Tungsten Polymentallic Deposit in Northern Jiangxi Province[J]. Mineral Deposits, 2013, 32(6):1171-1187.
[7] 陈国华, 万浩章, 舒良树,等.江西景德镇朱溪铜钨多金属矿床地质特征与控矿条件分析[J]. 岩石学报, 2012,28(12):3901-3914. Chen Guohua, Wan Haozhang, Shu Liangshu, et al. An Analysis on Ore-Controlling Conditionsand Geological Features of the Cu-W Polymetallic Ore Deposit in the Zhuxi Area Jingdezhen, Jiangxi Province[J]. Acta Petrologica Sinica, 2012, 28(12):3901-3914.
[8] 王先广,刘战庆,刘善宝,等.江西朱溪铜钨矿区细粒黑云母花岗岩LA-ICP-MS锆石U-Pb定年和岩石地球化学研究[J]. 岩矿测试, 2015, 34(5):592-599. Wang Xianguang, Liu Zhanqing, Liu Shanbao, et al. LA-ICP-MS Zircon U-Pb Dating and Petrologic Geochemistry of Fine-Granined Granite from Zhuxi Cu-W Deposit, Jiangxi Province and Its Geological Significance[J]. Rock and Mineral Analysis, 2015, 34(5):592-599.
[9] 朱明新,王河锦. 长沙-澧陵-浏阳一带冷家溪群及板溪群的甚低级变质作用[J].岩石学报, 2001, 17(2):291-300. Zhu Mingxin, Wang Hejin. Very Low-Grade Metamorphism of the Lengjiaxi and Banxi Groups Around the Area of Changsha-Liling-Liuyang, Hunan Province, China[J]. Acta Petrologica Sinica, 2001, 17(2):291-300.
[10] 湖南省地质矿产局.湖南省区域地质志[M]. 北京:地质出版社,1988. Hunan Bureau of Geology and Mineral Resources. Regional Geology of Hunan Province[M]. Beijing:Geological Publishing House, 1988.
[11] 侯可军,李延河,田有荣. LA-MC-ICP-MS锆石微区原位U-Pb定年技术[J]. 矿床地质, 2009, 28(4):481-492. Hou Kejun, Li Yanhe, Tian Yourong. In Situ U-Pb Zircon Dating Using Laser Ablation-Multi Ion Counting-ICP-MS[J]. Mineral Deposits, 2009, 28(4):481-492.
[12] 李晶,孙亚莉,何克,等.辉钼矿Re-Os同位素定年方法的改进与应用[J].岩石学报, 2010,26(2):642-648. Sun Jing, Sun Yali, He Ke, et al. The Improved Molybdenite Dating Method and Its Application[J]. Acta Petroligica Sinica, 2010, 26(2):642-648.
[13] 吴元保,郑永飞.锆石成因矿物学研究及其对U-Pb年龄解释的制约[J]. 科学通报, 2004, 49(16):1589-1604. Wu Yuanbao, Zheng Yongfei. Genetic Mineralogy of Zircon and It's Restricts for the Age of U-Pb[J]. Science Bulletin, 2004, 49(16):1589-1604.
[14] 续海金,马昌前,钟玉芳,等. 湖南桃江、大神山花岗岩的锆石SHRIMP定年:扬子与华夏拼合的时间下限[C]//2004年全国岩石学与地球动力学研讨会.北京:地质出版社, 2004:312-314. Xu Haijin, Ma Changqian, Zhong Yufang, et al. The Zircon SHRIMP Dating of the Taojiang and Dashenshan Granitoids:The Lower Limit Time Between the Cathaysia and Yangtzed Block[C]//The Seminar of Petrology and Geodynamic in China, 2004. Beijing:Geological Publishing House, 2004:312-314.
[15] Wang K X, Chen P R, Chen W F, et al. Magma Mingling and Chemical Diffusion in the Taojiang Granitoids in the Hunan Province, China:Evidences from Petrography, Geochronology and Geochemistry[J]. Mineral Petrology, 2012, 106:243-264.
[16] 丁兴,陈培荣,陈卫锋,等.湖南沩山花岗岩中锆石LA-ICP-MS U-Pb定年:成岩启示和意义[J].中国科学:D辑,2005, 35(7):606-616. Ding Xing, Chen Peirong, Chen Weifeng, et al. LA-ICP-MS Zircon Dating of Weishan Granitic Plutions in Hunan Province:Petrogenisis and Tectonic Implications[J]. Science in China:Series D, 2005,35(7):606-616.
[17] Smoliar, Michael I, Walker, et al. Re-Os Ages of Group ⅡA, ⅢA, ⅣA, and ⅣB Iron Meteorites[J]. Science Magazine, 1996, 271:1099-1102.
[18] 毛景文, 谢桂青, 郭春丽, 等.华南地区中生代主要金属矿床时空分布规律和成矿环境[J]. 高校地质学报, 2008,14(4):510-526. Mao Jingwen, Xie Guiqing, Guo Chunli, et al. Spatial-Temporal Distribution of Mesozoic Ore Deposits in South China and Their Metallogenic Settings[J]. Geological Journal of China Universities, 2008,14(4):510-526.
[19] Gilder S A,Gill J,Coe R S, et al. Isotopic and Paleomagnetic Constraints on the Mesozoic Tectonic Evolution of South China[J]. Journal of Geophysical Research:B,1996,101(7):16137-16155.
[20] Hong D W,Xie X L, Zhang J S. Isotopic Geochemistry of Granitoids in South China and Their Metallogeny[J]. Resource Geology,1998, 48(4):251-263.
[21] 赵振华,包志伟,张伯友,等. 柿竹园超大型钨多金属矿床形成的壳幔相互作用背景[J]. 中国科学:D辑,2000,28(增刊):7-14. Zhao Zhenhua,Bao Zhiwei,Zhang Boyou, et al. Crust-Mantle Interaction Background of the Ore Formation in the Giant Shizhuyuan Tin Polymetallic Deposit[J]. Science in China:Series D,2000, 28(Sup.):7-14.
[22] 朱金初,黄革非,张佩华,等.湖南骑田岭岩体菜岭超单元花岗岩侵位年龄和物质来源研究[J]. 地质论评,2003, 46(3):245-252. Zhu Jinchu,Huang Gefei,Zhang Peihua, et al. On the Emplacement Age and Material Sources for the Granites of Cailing Superunit,Qitianling Pluton,Southern Hunan[J]. Geological Review,2003, 46(3):245-252.
[23] 朱金初,谢才富,张佩华,等. 桂北牛庙闪长岩和同安石英二长岩:岩石学、锆石SHRIMP U-Pb年代学和地球化学[J]. 岩石学报,2005, 21(3):665-676. Zhu Jinchu,Xie Caifu,Zhang Peihua, et al. Niumiao and Tong'an Intrusive Bodies of NE Guangxi:Petrology,Zircon SHRIMP U-Pb Geochronology and Geochemistry[J]. Acta Petrologica Sinica,2005,21(3):665-676.
[24] Li Z L,Hu R Z,Peng J T, et al. Helium Isotope Geochemistry of Ore-Forming Fluids from Furong Tin Orefield in Hunan Province,China[J]. Resource Geology,2006, 56(1):9-15.
[25] Wu L Y,Hu R Z,Peng J T, et al. Helium and Argon Isotope Compositions of Fluid Inclusions in Pyrite from Shizhuyuan W-Sn-Mo-Bi Deposit,Hunan Province[J]. Journal of China University of Geosciences,2007, 18(Sup.):297-299.
[26] 蔡明海,韩凤彬,何龙清,等. 湘南新田岭白钨矿床He、Ar同位素特征及Rb-Sr测年[J]. 地球学报,2008,29(2):167-173. Cai Minghai,Han Fengbin,He Longqing, et al. He,Ar Isotope Characteristics and Rb-Sr Dating of the Xintianling Skarn Scheelite Deposit in Southern Hunan, China[J]. Acta Geoscientia Sinica, 2008, 29(2):167-173.
[27] 张龙升,彭建堂,张东亮,等. 湘西大神山印支期花岗岩的岩石学和地球化学特征[J]. 大地构造与成矿学, 2012, 36(1):137-148. Zhang Longsheng, Peng Jiantang, Zhang Dongliang, et al. Geochemistry and Petrogenesis of the Indosinian Dashenshan Granite, Western Hunan[J]. South China Geotectonica et Metallogenia, 2012, 36(1):137-148.
[28] Mao J W,Zhang Z C,Zhang Z H, et al. Re-Os Isotopic Dating of Molybdenites in the Xiaoliugou W (Mo) Deposit in the Northern Qilian Mountains and Its Geological Significance[J]. Geochimical Cosmochimical Acta, 1999, 63(11/12):1815-1818.
[29] 耿艳光,简伟,李洪英,等.中条山篦子沟铜矿辉钼矿铼-锇同位素年龄及其地质意义[J].吉林大学学报(地球科学版),2017,47(5):1405-1418. Geng Yanguang, Jian Wei, Li Hongying, et al. Re-Os Isotopic Dating of Molybdenite from Bizigou Cu Deposit in Zhongtiao Mountain and Its Implication[J]. Journal of Jilin University (Earth Science Edition), 2017,47(5):1405-1418.
[30] Parrish I S, Tully J V. Porphyry Tungsten Zones at Mt Pleasant, New Brunswick[J]. CIM Bull, 1978, 71:93-100.
[31] Noble S R, Spooner E T C, Harris F H. The Logtung Large Tonnage, Low-Grade W (Scheelite)-Mo Porphyry Deposit, South-Central Yukon Territory[J]. Economic Geology, 1984, 79(5):848-868.
[32] So C S, Shelton K L, Seidemann D E, et al. The DaeHwa Tungsten-Molybdenum Mine, Republic of Korea:A Geochemical Study[J]. Economic Geology, 1983, 78(5):920-930.
[33] Shelton K L, Taylor R P, So C S. Stable Isotope Studies of the Dae Hwa Tungsten-Molybdenum Mine, Republic of Korea:Evidence of Progressive Meteoric Water Interaction in a Tungsten-Bearing Hydrothermal System[J]. Economic Geology, 1987, 82(2):471-481.
[34] Zhang Y X. Geological Characteristics and Origin of Yangchuling Porphyry W-Mo-Deposit[J]. Geochimica, 1982, 2:122-132.
[35] Mao J W, Xiong B K, Liu J, et al. Molybdenite Re/Os Dating, Zircon U-Pb Age and Geochemistry of Granitoids in the Yangchuling Porphyry W-Mo Deposit (Jiangnan Tungsten Ore Belt), China:Implications for Petrogenesis, Mineralization and Geodynamic Setting[J]. Lithos, 2017, 286/287:35-52.
[36] Liu P, Mao J W, Pirajno F, et al. Ore Genesis and Geodynamic Setting of the Lianhuashan Porphyry Tungsten Deposit, Eastern Guangdong Province, SE China:Constraints from Muscovite ⁴⁰Ar-³⁹Ar and Zircon U-Pb Dating and Hf Isotopes[J].Mineralium Deposita,2018,53(6):797-814.
[37] 谭运金.广东莲花山斑岩钨矿床地质地球化学特征及矿床成因[J].地球化学, 1983(2):121-132. Tan Yunjin. Geological-Geochemical Characteristics of Lianhuashan Porphyry Tungsten Deposit, and Its Origin[J]. Geochemistry, 1983(2):121-132.
[38] 柳少波,王联. 莲花山斑岩型钨-金矿床蚀变矿化过程中元素迁移定量研究[J]. 地质科学, 1998, 33(1):102-114. Liu Shaobo, Wang Lian. Element Gains and Loss in the Process of Alteration in Lianhuashan W-Au Porphyry-Type Deposit[J]. Science Geology, 1998, 33(1):102-114.
[39] 古菊云. 中国主要斑岩钨矿床地质特征[J]. 矿产与地质, 1988, 2(1):13-21. Gu Juyun. The Characteristics of Dominant Porphyry Tungsten Deposits of China[J]. Mineral Resource Geology, 1988, 2(1):13-21.
[40] 唐勇明,赵乔辉,罗仕长.湖南桃江木瓜园斑岩型钨矿床地质特征及成矿规律[J]. 西部资源, 2016, 32(3):94-95. Tang Yongming, Zhao Qiaohui, Luo Shizhang. Geological Characteristics and Metallogeny of Muguayuan W Deposit in Taojiang County, Hunan Province[J]. Western Resources, 2016, 32(3):94-95.

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