摘要
山西右玉金矿主要产于韧(脆)性剪切带强变形域,由新太古界集宁岩群片麻岩和新太古-古元古代变质石榴花岗岩等构成的含矿岩系。矿床严格受剪切带构造控制,剪切构造既是有利的导矿构造,也是良好的容矿构造。受五台、吕梁期以及后期多期次、多级区域构造活动影响,金的成矿作用也伴随剪切构造带经历了从韧性、脆-韧性到脆性的构造演化叠加过程。成矿流体主要来自变质热液,金的成矿作用主要分为四个阶段,黄铁矿为金的主要伴随金属矿物,对金矿化具有重要的指示意义。研究认为矿床成因是与脆-韧性剪切带构造密切相关的变质-热液型金矿床。本次研究提出找矿方向,为矿区及外围进一步开展金矿地质找矿工作提供参考。
The Shanxi youyu gold deposit is mainly produced in the strong deformation domain of ductile (brittle) shear zone,which is composed of gneisses from the neoarchaean Jining group and metamorphic garnet granitoids from neoarchean to paleoproterozoic.The deposit is strictly controlled by the shear zone structure, which is not only a favorable ore guide structure,but also a good ore host structure.Under the influence of multistage and multi-stage regional tectonic activities in Wutai,Lvliang and later stages.The gold mineralization also experienced the superposition process of tectonic evolution from ductile,brittle to ductile to brittle with shear tectonic belt.The ore-forming fluid mainly comes from metamorphic hydrothermal fluid,and the gold mineralization can be divided into four stages.It is considered that the genesis of the deposit is a metamorphic hydrothermal gold deposit closely related to the structure of brittle ductile shear zone.This research can provide a guidance to find the mining area both inside and outside the study area.
作者
黄晋荣
陈志方
姜宇
HUANG Jin-rong;CHEN Zhi-fang;JIANG Yu(Shanxi Institute of Geological Survey,Taiyuan 030006,China)
出处
《地质调查与研究》
2019年第3期185-193,201,共10页
Geological Survey and Research
基金
山西省国土资源厅
山西省财政厅矿业权价款项目:“山西右玉后窑子金矿及外围地质普查项目（晋国土资办发[2010]15号）
山西右玉后窑子-火烧滩金矿地质详查项目（晋国土资函[2013]1087号）”
关键词
韧(脆)性剪切带
含矿岩系
黄铁矿
成矿流体
找矿标志
ductile (brittle) shear zone
ore-bearing rock series
pyrite
ore-forming fluid
prospecting mark
作者简介
黄晋荣(1963-),男,高级工程师,本科,毕业于长春地质学院地质矿产调查专业,主要从事矿产地质勘查与研究工作,E-mail:2393745340@qq.com。
