浅成低温热液金矿床研究进展

New advances on epithermal gold deposits

浅成低温热液金矿床是一种重要的金矿类型,近年来其找矿勘查和成因理论研究取得了很大的进展。它不仅产出于中新生代,而且在中生代以前也有产出。该类型金矿成矿与岩浆活动密切相关,岩浆成分具高K特征,成矿物质组成显示出深部来源的特征。高硫化浅成低温热液金矿床与斑岩型铜 金矿床往往密切共生,它们可能是同一成矿系统的产物,在有利的构造条件下可能在其旁侧发育低硫化浅成低温热液金矿床,如紫金山地区。我国东南沿海和西南太平洋地区不同类型浅成低温热液金矿床是不同构造 岩浆背景下的产物。

As one of important type of gold deposits,the exploration and genesis research of epithermal gold deposits obtained some new advances recently.They occurred not only in Mesozoic and Cenozoic era,but also in former Mesozoic era.The epithermal mineralization related to magmatism closely,which characterizes high-K.The ore-forming metals present plutonic features.The high-sulfidation epithermal gold deposits generally show paragenetic relationship with porphyry copper-gold deposits.Under favorable structural condition there,the low-sulfi dation epithermal gold deposits may occur nearby,for example,in Zijinshan area.The difference of deposit type between southeast inshore region in China and southwest pacific region is caused by different tectonomagmatism.