摘要
本文基于三道湾子金矿床的成矿地质背景和矿区地质特征,通过采用地质编录和取样等野外工作手段,结合光薄片鉴定、图件分析等室内工作方法,初步认为该矿床的成因类型为:含碲化物的低硫化型浅成低温热液金矿床,并以此总结出三道湾子金矿床的矿化富集规律:(1)塔木兰沟组地层是金矿化的重要矿源层;(2)成矿前辉绿玢岩脉控制着矿体的富集部位;(3)构造控矿规律表现为多级构造控矿规律、矿体侧伏和斜列规律;(4)矿化蚀变存在着明显的水平分带规律,从中心到边缘依次为:矿体—石英脉—蚀变岩—火山岩。
Based on discussion on tectonic settings and geological characteristics of Sandaowanzi gold deposit, it was thought that this deposit belongs to antimonide-bearing LS epithermal gold deposit according to field works i.e. geologic logging, sampling and indoor methods like identification of polished section, thin section and map analysis. Finally enrichment regularities of gold mineralization were summed up as follows： 1） Tamulangou formation stratum is significant origin bed of gold mineralization. 2） Preore-forming diabase prophyrite controlled the concentration part of ore bodies. 3） Structural ore-controlling regularities include multistage ore-controlling, pitching and diagonal ones. 4 ）There are apparent horizontal zonal laws in Mineralization and alteration from center to edge, that is. ore bodies - quartz vein - alteration zone - volcanic rocks.
出处
《世界有色金属》
2015年第12期82-84,共3页
World Nonferrous Metals
