德尔尼铜矿床矿石特征及对矿床成因的指示

发布时间：2018-07-09 09:37

本文选题：德尔尼 + 铜矿床　；参考：《中国矿业》2017年S2期

【摘要】：德尔尼铜矿矿床是布青山-积石山铜多金属成矿带重要的典型矿床。矿床成因一直是该区研究的焦点之一。受晚古生代以来的压性构造变形作用影响,整体呈北西-南东向展布。这种构造应力作用在矿石中也有所体现,并反映在矿石的结构和构造中。这对于研究成矿期次和矿床成因具有重要意义。本文通过研究德尔尼铜矿床矿石的野外和镜下特征,认为德尔尼铜矿成矿作用期次可分为黄铁矿第一阶段(Py~Ⅰ)、黄铜矿及磁铁矿阶段(Ccp~Ⅰ+Mag)、黄铁矿第二阶段(Py~Ⅱ)及后期黄铜矿阶段(Ccp~Ⅱ)四个主要阶段。结合前人对控矿要素的分析,认为德尔尼铜矿矿床类型是深部熔离-构造侵位型。
[Abstract]:Delney copper deposit is an important typical deposit in Buqingshan-Jishishan copper polymetallic metallogenic belt. The genesis of ore deposits has always been one of the focal points in this area. Influenced by the compressive tectonic deformation since the late Paleozoic, the whole is distributed in the north west-south east direction. This tectonic stress is also reflected in the ore structure and structure. This is of great significance for the study of metallogenic stages and ore genesis. In this paper, the field and microscopic characteristics of the Delney copper deposit ore are studied. It is considered that the metallogenic stages of Delney copper deposit can be divided into four main stages: pyrite first stage (Py1), chalcopyrite and magnetite stage (CcpI Mag), pyrite stage 2 (PyII) and late chalcopyrite stage (CcpII). Based on the analysis of ore-controlling elements, it is considered that the Delney copper deposit type is deep melt-tectonic emplacement type.
【作者单位】：中国地质大学(北京);
【分类号】：P618.41

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