赣南盘古山钨矿隐伏花岗岩体岩石学与地球化学特征

发布时间：2018-03-25 06:42

本文选题：地球化学　切入点：花岗岩　出处：《中国地质》2016年05期

【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。
[Abstract]:Have a close genetic relationship between Pangushan Tungsten large and deep concealed granite famous, but because of the deep buried rock, the lack of relevant research data, greatly influences the understanding of deposit magmatic hydrothermal mineralization in Nanling. Scientific Drilling (SP-NLSD-2) exposing the rock mass, this paper carried out the petrology and geochemical study. Results show that the rock has super acid, alkali rich, poor sodium potassium rich features, belongs to the aluminum peraluminous high-k calc alkaline granite. The rock is formed of granite residual slurry height differential evolution of W, Bi and other elements were significantly higher than that of Nanling Yanshan granite, provides abundant mineral for the formation of tungsten bismuth deposit. Pangu mountain magmatic evolution to GREISENIZED magmatic stage, in Mo, Bi, Cu, Pb and REE increased, while W content, Sn content is due to have been transferred to the post magmatic hydrothermal rocks decreased. The body is formed in the extensional environment in the plate.

【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;中国地质科学院;中国地质科学院矿产资源研究所;江西省地质矿产勘查开发局赣南地质调查大队;江西盘古山钨业有限公司;
【基金】：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(Sino Probe-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~~
【分类号】：P588.12;P618.67

【相似文献】