中国科技核心期刊
美国化学文摘社(CAS)数据库
美国EBSCO学术数据库
日本科学技术振兴机构数据库(JST)
李跃东
Li Yuedong
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 orebodiescollectively contain 1 300 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.