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
傅其斌 1赵路通 1蓝斌 1刘晗 1孟军辉2
作者信息
- 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
- 折叠
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.
Abstract
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 high-grade 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Key words
Taldybulak Levoberezhny gold deposit/Kyrgyzstan/North Tien Shan/superimposed mineraliza-tion/metallogenic process引用本文复制引用
基金项目
紫金矿业集团科技立项项目矿山综合找矿预测专项(4104KY2022030001)
出版年
2024
NETL
NSTL
维普
万方数据