“2021年以来,我们在青海省柴达木南北缘滩间山、五龙沟金矿取得了找矿重大突破,新增金资源量43.2吨,创造潜在经济价值超200亿元。”4月7日,青海省柴达木南北缘大型超大型金矿深部资源预测研究项目负责人王斌在接受中新网记者采访时表示。
图为青海省柴达木南北缘大型超大型金矿深部资源预测研究项目组正在开展野外勘测。王斌 摄
素有中国“聚宝盆”之称的柴达木盆地地处青海省海西蒙古族藏族自治州,面积为25.65万平方公里,是中国重要的能源和矿产资源富集区之一。其中,位于柴达木盆地北缘的滩间山金矿和柴达木盆地南缘的五龙沟金矿是青海省柴北缘成矿带、东昆仑成矿带最具代表性的大型超大型金矿床,也是青海省集“科研—勘查—开发”为一体的示范型矿山。
据悉,柴达木盆地南北缘大规模金矿化的多期次特点与区域多期、多阶段的构造及岩浆热液活动,导致研究区金成矿规律、控矿要素等认识不足,加之研究区金矿深部定位预测研究的水平低、技术手段单一,制约了金矿深部的快速评价和找矿突破。
图为青海省柴达木南北缘大型超大型金矿深部资源预测研究项目组正在开展野外勘测。王斌 摄
王斌表示,此次研究项目取得的成果是青海省在大型金矿深部首次发现了第二成矿富集空间,预示着青海省柴达木南北缘大型超大型金矿具备形成山东“焦家式”世界级金矿床的潜力,还可直接供矿山企业开发利用,保障矿山企业正常生产,带动当地民众就业。
据《中国矿产地质志·青海卷·普及本》记载,截至2017年底,青海省查明黄金资源储量481.66吨,保有资源量347.17吨。截至目前,青海省已发现金矿产地346处,最大金矿为玉树藏族自治州曲麻莱县大厂金矿,金资源量为108.63吨。
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