黑色页岩建造中的贵金属矿产评价研究

Study on assessment of precious metals resources associated with black shales

黑色页岩建造中的贵金属矿床是近年来不断发现的一种新矿床类型 ,亦是目前非传统矿产资源研究的一个重要内容 .根据形态特征将该类矿床分为两类 :一类是矿化厚度几十米至几百米 ,长度可达几公里的矿带 ;如俄罗斯干谷Au Pt矿床 ;二是矿体厚度小 (1～ 2cm) ,长度大 ,金属含量高 ,如波兰Kupferschiefer含贵金属的Cu Ag矿床 .本文在综合分析大量国内外文献的基础上 ,通过对典型矿床的剖析 ,系统阐述了这类矿床的成矿地质背景、时空分布、矿化特征、成矿作用以及成因模型 ;同时分析了在我国寻找这类矿床的潜力 .

Precious metals deposits associated with black shales is a new type of deposits discovered in recent years, and is also an important aspect of non-traditional mineral resources study. According to their shape, the ore deposits may be classified into two categories: (a) one is an ore belt which is up to more than 100 m thick and up to n×km long, like the Suhoyipot Au-Pt deposit in Russia; and (b) the another is such a ore deposits that is only 1～2cm thick but very long and very high in metal concentration, like Kupferschiefer Cu-Ag deposit with precious metals in Poland. The ore-forming background, temporal-spatial distribution, compositional characteristics and genetic models of this kinds of ore deposits are elucidated in the basis of the analyses on a vast amount of literatures in this paper; looking forward to the Pt-Pd potentials in China.