摘要
湖南万古金矿位于江南造山带中段,属岩浆热液型金矿床。矿体严格受北西西向断裂控制,呈脉状、透镜状分布,主矿体走向NW320°,倾向NE,倾角40°~60°。成矿经历同生沉积、区域变质、早期热液、晚期热液四阶段,成矿物质具岩浆-地壳双源特征,成矿流体为中低温、低盐度H_(2)O-NaCl-CO_(2)体系。找矿标志包括断裂构造、硅化-黄铁矿化带及地球物理-地球化学异常,预测深部资源量超1000吨,具有重要找矿潜力。
The Hunan Wangu gold deposit is located in the middle section of the Jiangnan orogenic belt and belongs to the magmatic hydrothermal type gold deposit.The ore body is strictly controlled by northwest trending faults and distributed in a vein like and lens like manner.The main ore body has a strike of NW320°,a dip of NE,and a dip angle of 40°~60°.The mineralization process has gone through four stages:syngenetic sedimentation,regional metamorphism,early hydrothermal,and late hydrothermal.The mineralizing material has dual magmatic crustal source characteristics,and the ore-forming fluid is a medium low temperature,low salinity H_(2)O-NaCl-CO_(2) system.The prospecting indicators include fault structures,silicification pyrite mineralization zones,and geophysical geochemical anomalies.It is predicted that the deep resources will exceed 1000 tons and have important prospecting potential.
作者
胡创
HU Chuang(College of Earth and Planetary Sciences,Chengdu University of Technology,Chengdu 610059,China)
出处
《世界有色金属》
2025年第24期88-90,共3页
World Nonferrous Metals
关键词
金矿
地质特征
成矿规律
江南古陆
岩浆热液型
gold mine
Geological features
Mineralization law
Jiangnan ancient land
Magmatic hydrothermal type
