义敦岛弧带北段雀儿山岩体岩石地球化学特征与铀多金属成矿条件  

Geochemical Characteristic of the Rock and Uranium-polymetallic Metallogenetic Conditions in Queershan Rock Mass of North Yidun Island Arc Belt

作　　者：黎丕林 解波[1,2] 赵剑波 范永宏 向杰 LI Pilin;XIE Bo;ZHAO Jianbo;FAN Yonghong;XIANG Jie(Chendu University of Technology,Chengdu 610059,China;Research Institute No.280,China NationalNuclear Corporation,Guanghan 618300,China)

机构地区：[1]成都理工大学,四川成都610059 [2]核工业280研究所,四川广汉618300

出　　处：《四川有色金属》2018年第3期42-46,共5页Sichuan Nonferrous Metals

基　　金：中国地质调查局北方中新生代盆地及华东南铀矿远景区地质矿产调查"四川省西部地区铀矿资源远景调查"项目(编号:DD2016013616)资助

摘　　要：义敦岛弧带北段雀儿山岩体形成于燕山期,沿花岗岩内接触带及构造蚀变带发育一系列铀矿化、异常点带。岩石地球化学特征表明,雀儿山岩体属富硅、过碱、过铝质钙碱性岩,稀土配分模式表现为轻稀土富集的右倾模式,与华南产铀花岗岩特征类似。铀成矿条件分析显示,岩体含铀性好,铀矿化处构造活动强烈,热液蚀变发育,显示雀儿山岩体具有良好的铀成矿条件,下步找矿以寻找花岗岩内外接触带型、构造蚀变带型铀矿为主攻类型。Queershan rock mass, located in the most north of Yidun island arc belt, forms in the yanshanian periodand has a series of uranium mineralization and anomaly zones which developed along the inner contact zone andstructural alteration zone of granite. The geochemical characteristics of rocks indicate that Queershan rock mass isrich in silicon, alkali and aluminum, and belongs to calc-alkaline rock, The rare earth distribution mode is theright-tilt mode of light-rare earth enrichmen in rock. Similar with uranium granite in south China.The analysis ofuranium metallogentic conditions show that Queershan rock mass has good uranium content and the uraniummineralization site has strong tectonic activity and hydrothermal alterration. It shows that Queershan rock masshas favourable uranium metallogenic conditions. In the next step, the main attack type is to find the granite innerand outer contact zone type and structural alteration zone type uranium ore.

关 键 词：雀儿山 岩石地球化学特征 花岗岩型铀矿 成矿条件 

分 类 号：P618[天文地球—矿床学]