中文摘要：

德兴铜矿是中国东部大陆环境最具代表性的大型斑岩铜矿,由朱砂红、铜厂及富家坞三大矿床组成,其中的铜厂矿体以富金而别具特色。在前人研究基础上,本文通过系统的野外观测、详细的岩芯编录和全面的岩相学研究,厘定了铜厂矿床的脉体类型和形成顺序,系统地开展了各类脉体的流体包裹体研究,查明了成矿流体的演化过程,再塑了岩浆-热液矿化过程。初步识别出德兴矿床3组脉体类型,分别记录了三个不同阶段的蚀变-成矿过程：早期A脉分为4类,形成于成矿早期斑岩尚未固结时,伴有大规模的钾化和黑云母化甚至磁铁矿化;中期B脉可分为7类,形成于斑岩体固结后的大规模裂隙事件发育期,B脉石英呈梳状对称生长、黄铁矿以中心线生长;后期D脉共有3类,发育于成矿晚期,系雨水大量加入和硫化物大量淀积产物。观察发现,所有A、B及D脉沉淀过程中,均伴随大量的岩浆流体出溶、热液蚀变、流体挥发等热液活动、各脉均捕获了同体系内富含的热液流体。详细显微镜鉴定表明,各类脉体的脉石矿物石英内发育的大部分包裹体与世界典型斑岩铜矿床的矿化特征相似,从成矿早期A脉到成矿晚期D脉包裹体的类型发生如下变化：早期以LVH（含单子晶或多子晶包裹体发育,包裹体中还见有金属硫化物）＋富气相包裹体为主→中期以含单子晶包裹体＋富气相包裹体为主,以及含有少量富液相包裹体→成矿晚期,以富液相包裹体＋少量富气相包裹体。包裹体显微测温结果总体上指示了温度、压力及热液成分在各类脉体的形成过程的变化规律,从早期到晚期温度和盐度逐渐降低,热液成矿作用明显经历三个阶段：早期岩浆未完全固结,温度达到800～600℃以上,压力较高（140～50MPa）,发生强烈的钾硅酸盐化;中期,由于岩浆冷凝结晶,岩体顶部围岩裂隙发育,静岩压力向静水压力?

英文摘要：

Dexing copper deposit,known for rich gold,is the most typical continental porphyry deposit in the east of China. Based on systematic field observation of whole ore body and cataloging of core rock,alteration-mineralization system of Dexing Tongchang porphyry copper-gold deposit is clearly studid to Distinguish the order of mineral veins formation and to implement the microthermometere of fluid inclusions in the veins in this paper. According to the behavior of fluid inclusions of different mineralization stages and the result of microthermometer,the characteristics of ore-forming fluid of alteration-mineralization system of Dexing Tongchang porphyry copper-gold deposit are completely recognized. Dexing Tongchang porphyry copper-gold deposit was formed by multi-stages of alteration and mineralizaiton from early to the end. In the early stage,the four A-type veins were formd when the porphyry rock is not completely solidified so that the veins are irregluar or unclearly bordered with wall rock or porphyry rock and large-scale of K-feldspar alteration,biotite alteration and even magnetitization. In the middle stage,the seven B-type veins where symmetrical pectinate quartzs or chlorite are vertical to the vein wall and metal minerals are as their centerline,were largely formed when most of the ore minerals including the chalcopyrite,molybdenite,bornite and so on were formed contemporaneously. At the post-minerlization stage,three D-type veins with or without alterated Hydromica halo and the lastest hypothermal carbnate-quartz veins and biotite veins were fromed when the mineralizaiton system was opened and meteoric water and undergrand water infused into the open fissure. Mineralization and alteration system of Dexing Tongchang copper-gold deposit is similar to that worldwide typical porphyry deposit,showing that A-type Veins and K-silicification occurred on the boundary between wallrock and granodiorite porphyry,B-and D-veins and propylitization occurred outspreading along the wallrock and granodiorite porphyry near