青海陇孔沟金矿床控矿因素、成矿机制及成矿模式

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英文篇名：Ore-controlling Factors,Metallogenic Mechanism and Model of the Longkonggou Gold Deposit in Qinghai 作者：郑振华 ; 沈娟 ; 党洪量 ; 马国栋 ; 王佳音 英文作者：ZHENG Zhenhua;SHEN Juan;DANG Hongliang;MA Guodong;WANG Jiayin;Qinghai Geological Survey; 关键词：陇孔沟 ; 金矿床 ; 控矿因素 ; 成矿机制 ; 成矿模式 英文关键词：Longkonggou;;gold deposit;;structural factors;;metallogenic mechanism;;metallogenic model 中文刊名：XBDI 英文刊名：Northwestern Geology 机构：青海省地质调查局; 出版日期：2019-03-05 出版单位：西北地质 年：2019 期：v.52;No.211 基金：青海华楠矿业开发有限公司投资项目“青海省祁连县陇孔沟金矿普查”(T63120090302026493) 语种：中文; 页：XBDI201901016 页数：8 CN：01 ISSN：61-1149/P 分类号：162-169

摘要

为研究陇孔沟金矿床的控矿因素、成矿机制,建立了成矿模式。首先总结研究区及邻区的地层、构造、岩浆岩特征;其次对陇孔沟金矿床的矿体特征、矿石质量、矿石结构、构造及金自然状态分别进行了描述;最后在研究控矿因素、成矿机制的基础上,建立了成矿模式。研究结果显示:①控矿的主导因素不是地层和侵入岩体,而是剪切构造和成矿流体。②成矿机制是矿源层中的成矿元素经活化、迁移,于构造蚀变带中富集而成的矿床。③成矿模式为与构造破碎带密切相关的中低温热液成矿。
        In this paper,the Longkongou gold deposit has been selected as the research object to study the ore-controlling factors and mineralization mechanism of this deposit,and to establishe the related metallogenic model.Firstly,the stratigraphic,tectonic and magmatic rocks in this study area and adjacent area have been sμmmarized.Then,the characteristics of ore body,ore quality,ore structure and gold natural state of the Longkonggou gold deposit have been described respectively.Finally,based on the ore-controlling factors and mineralization mechanism,the metallogenic model was established.The results show that the dominant ore-controlling factor is not stratigraphic factors and the intrusive rock mass,but the shearing structure and ore-forming fluid.The ore-forming process is this deposit formed from the ore-forming elements in the ore source layer,which were activated,migrated and accμmulated in the tectonic alteration zone.The metallogenic model is a medium-low temperature hydrothermal mineralization closely related to the structural fracture zone.

引文

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