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无论是从矿化的垂直深度还是矿床的埋藏深度看,金矿床都是突出的代表. 世界上最大的南非维特瓦特斯兰德金铀砾岩型矿床的开采深度达地表以下3600多m,钻孔穿透的最大深度为4600m.苏联学者涅克拉索夫研究了深延金矿的一般特征和类型.除苏联外,他统计的开采深度达1 km和更深的金矿床有30个.其中一半是产于绿片岩系和角闪石化陆源-火山岩系中的矿床,其特点是矿化深度大(平均1600m)、金储量大(平均367t),而且每加深1 m,金储量可增加0.12t.这类深度大、储量大、矿化又相对稳定的金矿的开采也较简单,因而是最有远景的金矿类型之一. 我国在深部金矿的研究和普查方面也取得了一些进展. 以栾世伟教授为首的小秦岭金矿深部矿化特征课题研究小组,经过4年的工作,得出了小秦岭金矿深部远景储量大于现在保有储量的可喜结论.江
The gold deposits are prominent representatives both in terms of the vertical depth of mineralization and the burial depth of the deposit.The world’s largest Wirtwaterskin uranium-conglomerate deposit in the world has a depth of more than 3600 m below the surface The maximum depth of hole penetration was 4600 m. Soviet scholar Nekrasov studied the general characteristics and types of deep-extended gold mines except for the Soviet Union where he calculated the depth of exploration to 1 km and deeper gold deposits to 30. Half It is characterized by a large mineralization depth (1600m on average) and large gold reserves (367t on average). With every 1 m deepening, the reserves of gold can increase by 0.12t The exploitation of such deep, large reserves, relatively mineralized and relatively stable gold mines is also relatively simple and therefore one of the most promising types of gold mines, and some progress has been made in the research and census of deep gold mines in China After 4 years of working, the research team of the deep mineralization characterization of Xiaoqinling gold deposit led by Prof. Luan Shiwei concluded that the deep vista of the Xiaoqinling gold deposit is larger than that of the present reserved reserves.