吉尔吉斯斯坦Taldybulak Levoberezhny(左岸)金矿床地质特征及成矿过程分析  

Geological characteristics and metallogenic process of the Taldybulak Levoberezhny gold deposit in Kyrgyzstan

作　　者：傅其斌 赵路通 蓝斌 刘晗 孟军辉 FU Qibin;ZHAO Lutong;LAN Bin;LIU Han;MENG Junhui(Sino-Zijin Resources Ltd,Zijin Mining,Beijing 100012,China;Altynken Co.,Ltd,Chuhe 720001,Kyrgyz)

机构地区：[1]中色紫金地质勘查(北京)有限责任公司,北京100012 [2]吉尔吉斯斯坦奥同克有限责任公司,楚河州720001

出　　处：《矿产勘查》2024年第2期242-251,共10页Mineral Exploration

基　　金：紫金矿业集团科技立项项目矿山综合找矿预测专项(4104KY2022030001)资助。

摘　　要：Taldybulak Levoberezhny(左岸)金矿床位于吉尔吉斯斯坦北天山东段Aktyuz变质地体中,金矿体赋存于脆韧性变形带中。矿床经历两期金成矿作用,早成矿期低品位(0.1×10^(-6)~2.0×10^(-6))金矿化体受韧性剪切带控制,围岩蚀变主要为硅化和碳酸盐化,发育典型的条带状和块状矿石。主成矿期高品位(5×10^(-6)~15×10^(-6))矿体主要与硅化和电气石化蚀变有关,形成典型的石英电气石岩型矿石。详细的地质接触关系和年代学研究表明矿床两期金成矿作用均形成于早志留世,分别与二长斑岩和闪长岩具有密切成因联系。Taldybulak Levoberezhny金矿床是一个志留纪与洋-陆俯冲增生岛弧岩浆岩有关的具有叠加成矿特点的岩浆热液型金矿床。The Taldybulak Levoberezhny gold deposit is located in the Aktyuz metamorphic area in the eastern part of the Northern Tien Shan,Kyrgyzstan.The gold mineralization is mainly hosted in the brittle ductile deforma⁃tion zone.The early low-grade gold mineralization is controlled by the ductile shear zone,and the alteration of the surrounding rocks is mainly silicification and carbonation,developing typical striped and massive ores.The highgrade mineralization in the main metallogenic stage is mainly related to silicification and tourmaline alteration,forming typical quartz tourmaline type ores.The detailed geological investigation and research confines that the two episodes gold mineralization were both formed in Early Silurian and were genetic related to monzoporphyry and diorite respectively.Taldybulak Levoberezhny gold deposit is a magmatic hydrothermal gold deposit with superimposed metallogenic characteristics related to oceanic-continental subduction and accretion island arc magmatic rocks in Silurian.

关 键 词：左岸金矿床 吉尔吉斯斯坦 北天山 叠加成矿 矿床成矿过程 

分 类 号：P548[天文地球—构造地质学]