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Cu Ni PGE矿床绝大多数赋存在基性 超基性岩岩体内部 ,在成因上主要与岩浆结晶分异 熔离作用有关 ,岩浆期后或者独立的热液对于矿床的形成往往起叠加富集的作用。但在四川杨柳坪矿区 ,除了一般岩浆结晶分异 熔离作用形成的Cu Ni PGE矿体之外 ,新近还发现存在独立的完全由热液形成的Cu Ni PGE矿体 ,矿体赋存在基性 超基性岩体之外的大理岩 片岩中 ,与基性超基性岩没有直接的关系 ,矿石品位很高 ,而且已经成为首要的开采对象。考虑到这样的富矿体在国外文献中鲜有报道 ,本文介绍其地质概况及初步的研究结果。
The vast majority of Cu Ni PGE deposits exist inside the basic ultramafic rocks, which are mainly related to the differentiation and dissociation of the magma crystals in the genesis. After the magma or the independent hydrothermal fluids, the ore deposits tend to be superposed and enriched Role. However, in addition to the Cu Ni PGE ore bodies formed by the general magma crystal differentiation and melt separation, the Cu Ni PGE ore body completely formed by hydrothermal fluids has been newly found in the Yangliuping mining area in Sichuan Province. In the marble schist that is beyond the ultramafic rocks, there is no direct relationship with the basic ultramafic rocks. The grade of ore is very high and has become the primary mining object. Considering that such ore bodies are rarely reported in foreign literature, this paper introduces the geological survey and the preliminary research results.