| 赣南盘古山钨矿隐伏花岗岩体岩石学与地球化学特征 |
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| 引用本文： | 方贵聪,陈毓川,陈郑辉,曾载淋,刘翠辉,童啟荃,孙杰,朱国华.赣南盘古山钨矿隐伏花岗岩体岩石学与地球化学特征[J].中国地质,2016(5):1558-1568. |
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| 作者姓名： | 方贵聪 陈毓川 陈郑辉 曾载淋 刘翠辉 童啟荃 孙杰 朱国华 |
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| 作者单位： | 桂林理工大学地球科学学院, 广西隐伏金属矿产勘查重点实验室, 广西 桂林 541004,中国地质科学院, 北京 100037,中国地质科学院矿产资源研究所, 北京 100037,江西省地质矿产勘查开发局赣南地质调查大队, 江西 赣州 341000,江西省地质矿产勘查开发局赣南地质调查大队, 江西 赣州 341000,江西盘古山钨业有限公司, 江西 于都 342311,江西盘古山钨业有限公司, 江西 于都 342311,江西盘古山钨业有限公司, 江西 于都 342311 |
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| 基金项目： | 广西自然科学基金青年基金（2015GXNSFBA139205）、国家深部探测技术与实验研究专项“南岭于都-赣县矿集区立体探测技术与深部成矿预测示范”课题（SinoProbe-03-03）、国家科技支撑计划“赣南崇义-于都矿集区深部资源勘查技术集成与示范”课题（2011BAB04B07）、国土资源部公益性行业科研专项“南岭东段九龙脑矿田地质与地球化学测量”课题（201411050-2）、桂林理工大学科研启动基金联合资助。 |
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| 摘 要： | 著名的盘古山大型钨矿与深部隐伏花岗岩体具有密切成因关系,但因该岩体隐伏深,相关研究资料较为欠缺,很大程度上影响了对矿床岩浆-热液-成矿作用的深入认识。南岭科学钻探(SP-NLSD-2)揭露该岩体后,本文对其开展了岩石学和元素地球化学研究。结果表明,该岩体具有超酸性、富碱、贫钠富钾等特征,属于准铝-过铝质高钾钙碱性花岗岩。形成该岩体的花岗岩浆为高度分异演化的残浆,W、Bi等元素含量明显高于南岭燕山期花岗岩,为盘古山钨铋矿床的形成提供了丰富的矿质。岩浆演化至云英岩化阶段时,岩浆中的Mo、Bi、Cu、Pb及REE含量增加,而W、Sn含量则因已转移到岩浆期后热液而降低。岩体形成于板内伸展环境。
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| 关 键 词： | 地球化学 花岗岩 钨矿床 南岭科学钻探 盘古山 |
| 收稿时间： | 7/7/2016 12:00:00 AM |
| 修稿时间： | 2016/8/16 0:00:00 |
Petrology and geochemistry of granite in the Pangushan tungsten deposit, south Jiangxi Province |
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| FANG Gui-cong,CHEN Yu-chuan,CHEN Zheng-hui,ZENG Zai-lin,LIU Cui-hui,TONG Qi-quan,SUN Jie and ZHU Guo-hua.Petrology and geochemistry of granite in the Pangushan tungsten deposit, south Jiangxi Province[J].Chinese Geology,2016(5):1558-1568. |
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| Authors: | FANG Gui-cong CHEN Yu-chuan CHEN Zheng-hui ZENG Zai-lin LIU Cui-hui TONG Qi-quan SUN Jie and ZHU Guo-hua |
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| Institution: | Guangxi Key Laboratory of Hidden Metallic Ore Deposits Exploration, College of Earth Science, Guilin University of Technology, Guilin 541004, Guangxi, China,Chinese Academy of Geological Sciences, Beijing 100037, China,Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China,Gannan Geological Survey Party, Jiangxi Bureau of Exploration & Development of Geology & Mineral Resources, Ganzhou 341000, Jiangxi, China,Gannan Geological Survey Party, Jiangxi Bureau of Exploration & Development of Geology & Mineral Resources, Ganzhou 341000, Jiangxi, China,Jiangxi Pangushan Tungsten Co., Ltd., Yudu 342311, Jiangxi, China,Jiangxi Pangushan Tungsten Co., Ltd., Yudu 342311, Jiangxi, China and Jiangxi Pangushan Tungsten Co., Ltd., Yudu 342311, Jiangxi, China |
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| Abstract: | Pangushan granite is genetically related to the well-known Pangushan large-sized tungsten deposit. However, due to great depth, its petrologic and geochemical data had been lacking until it was discovered by the Nanling Scientific Drilling Project (SP-NLSD-2) recently. In this paper, the petrologic and geochemical study conducted by the authors is reported. The granite is found to be ultra-acidic, alkali-rich, Na-poor, K-rich, meta- to weak-peraluminous and K-high calc-alkaline. Its corresponding granitic magma is highly evolved and W and Bi values are significantly higher than their average values in Yanshanian granite in Nanling region, indicating that they were the major ore-forming material source. When the granitic magma was evolved to the greisenization stage, Mo, Bi, Cu, Pb and REE were enriched, while W and Sn were depleted because of their migration into the hydrothermal solution. The intrusion of the Pangushan granite happened during intraplate extension. |
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| Keywords: | geochemistry granite tungsten deposit Nanling Scientific Drilling Pangushan |
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