湘东北雁林寺金矿床地质特征及找矿标志  

Geological characteristics and prospecting signs of the Yanlinsi Gold Deposit in the northeast of Hunan Province

作　　者：陈冲 郭爱民 孙骥 陆文 Chen Chong;Guo Aimin;Sun Ji;Lu Wen(Hunan Institute of Geological Surve)

机构地区：[1]湖南省地质调查院

出　　处：《黄金》2018年第6期14-20,共7页Gold

基　　金：湖南省国土资源厅省级两权价款地质勘查项目(201303069);中华人民共和国科学技术部国家重点研发计划深地资源勘查开采专项子课题(2017YFC0601506);湖南省国土资源厅科研项目(2017-03);湖南省地质矿产勘查开发局科研项目(201701)

摘　　要：雁林寺金矿床位于扬子板块东南缘、江南古陆中段的湘东北地区。经地表及深部探矿工程揭露控制,雁林寺金矿区共圈定金矿体38条(工业矿体15条,低品位矿体23条)。金矿体主要赋存于新元古界冷家溪群黄浒洞组第一岩性段和黄浒洞组第二岩性段底部北东向韧性剪切带中,主要呈北北东—北东向展布,倾向北西西—北西,呈层状—似层状顺层产出。矿体与围岩产状基本一致,但形成明显晚于围岩。矿石主要由含金石英脉及其内部、边部的含金蚀变板(砂)岩组成,二者往往相伴产出。根据野外观察,结合控矿因素与矿化富集规律,确定了雁林寺金矿床的找矿标志,为矿山开展深边部找矿工作提供了依据。The Yanlinsi Gold Deposit is located in northeast part of Hunan Province that sits on the southeast edge of the Yangtze plate and the middle section of the Jiangnan ancient land. After the control was revealed by the surface and deep exploration projects,38 gold ore bodies were delineated in the Yanlinsi mining area（ 15 are industrial ore bodies and 23 are low-grade ore bodies）. The main ore bodies mainly occur in the NE-trending ductile shear zones of the first lithologic section and the bottom of the second lithologic section of the Huanghudong Formation,the Neoproterozoic Lengjiaxi Group. The orebodies,in layered or layer-like occurrence,are mainly NNE or NE distributed and have the NWW or NW tendency. The orebodies are basically in the same occurrence with the surrounding rocks,but the formation was significantly later. The orebodies are mainly composed of auriferous quartz veins and its internal and marginal alluvial altered plate（ sand） rocks,which often accompany each other in output. Based on field observations and analysis of ore-controlling factors and mineralization enrichment laws,the prospecting signs of the Yanlinsi Gold Deposit were determined,providing basis for the mine to carry out deep and peripheral mine prospecting work.

关 键 词：地质特征 控矿因素 找矿标志 冷家溪群 韧性剪切带 雁林寺金矿床 湘东北 

分 类 号：TD15[矿业工程—矿山地质测量] P618.51[天文地球—矿床学]