胶西北招贤金矿床深部找矿及研究新进展

New Research Progresses and Deep Prospecting of Zhaoxian Gold Deposit in Northwestern Jiaodong Peninsula

招贤金矿是焦家成矿带近年深部找矿重大突破之一,目前是焦家金成矿带勘查深度最深的矿区。2020年以来,山东省地质调查院在前人工作的基础上,继续开展深部找矿工作,在-2000m以深探获厚大金矿体,其中主矿体厚度19.50~43.14m,平均品位3.95~4.91g/t,最高品位93.5g/t,矿区新增金资源量153t,达到特大型金矿床规模。目前的勘查工作显示Ⅰ-2号主矿体在倾向上延伸稳定,-2360m以深矿体仍未闭合,表明焦家金成矿带在-2000m~-3000m深度仍具有极好的找矿潜力。

Zhaoxian gold deposit is one of the major breakthroughs in deep prospecting of Jiaojia gold metallogenic belt recently. It is the mining area with the deepest exploration depth in Jiaojia gold metallogenic belt. Since 2020, deep prospecting has been continuously carried out by Shandong Institute of Geological Surveying. Thick and large gold ore bodies have been discovered at the depth of-2000 m. The thickness of main ore body is 19.50~43.14 m, the average grade is 3.95~4.91 g/t, and the highest grade is 93.5 g/t. The new gold resources in the mining area are 153 t. It can reach the scale of super large gold deposits, and greatly improved the resource guarantee capacity of gold deposits in Jiaodong area. The current exploration shows that the thickness of Ⅰ-2 main ore body is stable in the dip, and the ore body under-2360 m is still not closed. It is indicated that Jiaojia gold metallogenic belt still has excellent prospecting potential at the depth of-2000 m ~-3000 m.