中文摘要：

紫金山铜金矿具有上金下铜的分布特征，金矿床赋存于潜水面之上的氧化带中，铜矿床赋存于潜水面之下的还原带中。铜矿石中有大量的斑铜矿。通过反光显微镜矿相学观察、电子探针、粉晶衍射等手段，分析本区斑铜矿的矿物学特征，并结合硫同位素特征，阐明本矿的成矿特征。研究结果显示，紫金山存在细脉状及它形粒状两种不同赋存状态的斑铜矿。电子探针结果显示，斑铜矿富硫贫铜，且不同赋存状态斑铜矿的主量元素随离火山机构的远近有一定的变化规律。铜硫化物δ^34S范围为一5．9‰～3．5‰，具地幔硫特征。结合紫金山铜金矿的区域地质特征、矿床地质特点，从而提出本区斑铜矿具有原生的特征，对本区铜金矿的成因具有重要的指示意义。

英文摘要：

Zijinshan Cu-Au Deposit has the distribution characteristics of copper locating under the gold. Gold deposit hosted in the oxidation zone which is upon water table and copper deposit hosted in the reduction zone which is beneath water table. There is a considerable amount of bornite in copper ore. This paper analyzed mineralogical characteristics of bornite by using optical microscopy, electron microprobe, XRD, etc. Combined with sulfur isotope characteristic, the metallogenic features of the mine field are illustrated. The occurrences of bornite have two kinds of modes, one is veinlet, and the other is allotriomorphic granular. Chemical analysis indicates that the bornite is sulfur rich and copper deficiency type by using electron microprobe. The major elements of different occurrences bornite have some variation with the distance from the volcano agencies. The δ^34 S value of copper sulfide ranges from --5.9‰ to 3.5‰, which shows that it has the magmatic sulfur feature. Combining with regional geology and ore deposit geology, this paper draws a conclusion that bornite is protogenous, which has important instruction significance for ore genesis of Zijinshan Cu-Au Deposit.