萨尔朔克矿区岩石地球化学特征及找矿意义  

Petrological and Geochemical Characteristics and Its Prospecting Significance in the Sarsuk Mining Area

作　　者：李成文 孟贵祥[2] 吴新忠[1] 何建喜[1] 王义郡 马超 周翔龙 Li Chenwen;Meng Guixiang;Wu Xinzhong;He Jianxi;Wang Yijun;Ma Chao;Zhou Xianglong(NO.1 Regional Geological Survey Brigade of Geology and Mineral Resources Exploration and Development Bureau of Xinjiang,Urumqi,Xinjiang,830000,China;Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing,100037,China;Xinjiang Xinwang Mining Co.,Ltd,Habahe,Xinjiang,836700,China)

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局第二区域地质调查大队,新疆昌吉831100 [2]中国地质科学院矿产资源研究所,北京100037 [3]新疆鑫旺矿业股份有限公司,新疆哈巴河836700

出　　处：《新疆地质》2021年第4期586-593,共8页Xinjiang Geology

基　　金：天山-阿尔泰增生造山带大宗矿产资源基地深部探测技术示范项目(2018YFC060400)资助。

摘　　要：区内泥盆纪中-酸性岩浆演化总体呈贫Ca,Na,Al,富K,Si趋势,具Si,Al,K,Na,Ca等常量元素变化规律。铅锌、铜、金多金属成矿作用与岩浆演化末期钾交代作用密切相关,赋矿酸性岩浆岩具特殊、可识别岩石化学特征(低Ca,Al,低全碱、高K,Si、高K_(2)O/Na_(2)O比值)。认为岩石地球化学调查可有效揭示本区岩浆演化趋势,据Si,Al,K,Na,Ca等常量元素综合指标可有效判别本区酸性岩含矿性,促进找矿勘查和成矿预测。It is found that the overall trend of the Devonian intermediate-felsic magma evolution in the study area is towards depletion in Ca,Na,and Al,and enrichment in K and Si,exhibiting the regular changes of major elements such as Si,Al,K,Na,and Ca.The polymetallic mineralization of lead-zinc,copper,and gold is closely related to the potassium metasomatism at the late stage of magmatic evolution.Ore-bearing felsic magmatic rocks have special and identifiable petrochemical characteristics(low contents of Ca,Al,and total alkalis,and high contents of K,Si,and K_(2)O/Na_(2)O ratios).Therefore,it is believed that proper petrogeochemical investigation can effectively reveal the evolution trend of magma in this area,and the comprehensive indicators of major elements including Si,Al,K,Na,Ca,and so on can be effectively used to distinguish the ore potential of the felsic rocks in this area,thereby to facilitate the prospecting and prediction of ore deposits.

关 键 词：萨尔朔克 岩石地球化学调查 岩浆演化与成矿作用 岩浆岩含矿性 

分 类 号：P59[天文地球—地球化学]