夹皮沟金成矿带砂金沟金矿床破碎蚀变岩型矿体特征及找矿方向  

Characteristics of the altered fractured rock⁃type orebodies and prospecting predictions of the Shajingou Gold Deposit in the Jiapigou gold metallogenic belt

作　　者：李跃东[1] Li Yuedong(China Gold Jilin Co.,Ltd.)

机构地区：[1]中国黄金集团吉林有限公司

出　　处：《黄金》2025年第2期89-93,共5页Gold

基　　金：国家重点研发计划项目(2016YFC0600707);吉林省科技发展计划资助项目(20160204009SF)。

摘　　要：砂金沟金矿床是夹皮沟金成矿带内典型的石英脉型金矿床,已发现矿体以石英脉型为主。近年来,随着开采深度不断增大,资源储量日趋紧张,继续探获新资源以供矿山长久发展。将砂金沟金矿床与紧邻的二道沟金矿床、云峰铅锌金矿床、马家店金矿床进行对比,认为砂金沟金矿床具有寻找蚀变岩型矿体的潜力。通过在24号矿化带的24-1号、24-2号含矿蚀变带及外围投入大量钻探工程,探获了破碎蚀变岩型矿体4条,编号分别为24-1、24-2、24-3、26-1。累积探获金金属量1300 kg,平均金品位2.9 g/t,取得了找矿突破,且24-1矿体深部金矿化发育,矿体深部及两翼延伸尚未控制,深部具备产出中大型金矿床的条件。结合控矿构造、原生晕等分析,认为砂金沟金矿区深部仍有较大的找矿潜力。该找矿方法可为夹皮沟金成矿带内寻找破碎蚀变岩型矿体提供思路。The Shajingou Gold Deposit is a typical quartz vein⁃type gold deposit within the Jiapigou gold metallo⁃genic belt,with known orebodies predominantly of the quartz vein type.In recent years,increasing mining depth has intensified resource depletion,necessitating the discovery of new resources for sustained development.By comparing the Shajingou Gold Deposit with the nearby Erdaogou Gold Deposit,Yunfeng Pb-Zn-Au deposit,and Majiadian Gold Deposit,it is inferred that the Shajingou Gold Deposit has the potential for discovering altered fractured rock⁃type orebodies.Extensive drilling within and around the mineralized alteration zones 24-1 and 24-2 in the No.24 mineralized belt led to the discovery of 4 altered fractured rock⁃type orebodies,labeled 24-1,24-2,24-3,and 26-1.These orebodies collectively contain 1300 kg of gold metal with an average grade of 2.9 g/t,marking a significant prospecting break⁃through.The deep part of orebody 24-1 shows well⁃developed gold mineralization with extensions along its depth and flanks yet to be fully delineated,indicating potential for medium⁃to large⁃scale gold deposits.Based on analyses of ore⁃controlling structures and primary halos,it is concluded that the deep portion of the Shajingou Gold District holds sig⁃nificant prospecting potential.This approach provides a valuable exploration strategy for identifying altered fractured rock⁃type orebodies within the Jiapigou gold metallogenic belt.

关 键 词：石英脉型 破碎蚀变岩型 砂金沟金矿床 夹皮沟金矿田 矿体特征 找矿方向 

分 类 号：TD11[矿业工程—矿山地质测量] P618.51[天文地球—矿床学]