赣南长流坑钨矿年代学与原生晕地球化学

发布时间：2018-12-25 09:18

【摘要】：长流坑钨矿位于赣南九龙脑矿田北部,研究程度较为薄弱,成矿时代及原生晕分带规律至今未见报道。本文对其开展了白云母Ar-Ar年代学及原生晕地球化学研究。结果表明:(1)长流坑钨矿形成于(151.9±1.5)Ma,与九龙脑花岗岩体存在密切成因关系;(2)矿床原生晕轴向分带明显,W、Bi为矿中元素,Ca、Sr、Mn、V、Cr、Nb、Cs、Ti、U为矿头元素,Cu、Mo、Hg、Co、S、P、As、Y、Th、Pb、Sb、I为矿前元素,矿中元素与矿头元素原生晕异常中心相距约150m,与矿前元素原生晕异常中心相距约330m;(3)建立了矿区原生晕轴向分带模式,并据此圈定2个预测靶区。
[Abstract]:Changliulkeng tungsten deposit is located in the north of Jiulong brain ore field in south Jiangxi Province, and the study degree is relatively weak, and the metallogenic epoch and the rules of primary halo zoning have not been reported up to now. The Ar-Ar geochronology and primary halo geochemistry of Muscovite have been studied in this paper. The results show that: (1) the Changliukeng tungsten deposit was formed in (151.9 卤1. 5) Ma, and has a close genetic relationship with the Jiulongnao granite body; (2) the primary halo axial zonation of the deposit is obvious, with WNBI as the ore element, Ca,Sr,Mn,V,Cr,Nb,Cs,Ti,U as the ore head element and Cu,Mo,Hg,Co,S,P,As,Y,Th,Pb,Sb,I as the pre-ore element. The distance between the primary halo anomaly center and the primary halo anomaly center of ore head element is about 150m, and the distance between ore element primary halo anomaly center and pre-ore element primary halo anomaly center is about 330m. (3) an axial zonation model of primary halo is established, and two prediction targets are delineated accordingly.
【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;中国地质科学院;
【基金】：国土资源部公益性行业科研专项(201411050-2) 国家重点研发计划课题(2016YFC0600208) 广西自然科学基金青年基金项目(2015GXNSFBA139205) 广西隐伏金属矿产勘查重点实验室系统研究课题(16-140-27-03) 国家自然科学基金项目(41162005,41463001,41572191)
【分类号】：P618.67;P632.2

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